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2616 lines
97 KiB
2616 lines
97 KiB
<?php
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// This file is part of Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
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/**
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* Back-end code for handling data about quizzes and the current user's attempt.
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*
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* There are classes for loading all the information about a quiz and attempts,
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* and for displaying the navigation panel.
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*
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* @package mod_quiz
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* @copyright 2008 onwards Tim Hunt
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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defined('MOODLE_INTERNAL') || die();
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/**
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* Class for quiz exceptions. Just saves a couple of arguments on the
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* constructor for a moodle_exception.
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*
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* @copyright 2008 Tim Hunt
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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* @since Moodle 2.0
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*/
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class moodle_quiz_exception extends moodle_exception {
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public function __construct($quizobj, $errorcode, $a = null, $link = '', $debuginfo = null) {
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if (!$link) {
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$link = $quizobj->view_url();
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}
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parent::__construct($errorcode, 'quiz', $link, $a, $debuginfo);
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}
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}
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/**
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* A class encapsulating a quiz and the questions it contains, and making the
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* information available to scripts like view.php.
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*
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* Initially, it only loads a minimal amout of information about each question - loading
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* extra information only when necessary or when asked. The class tracks which questions
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* are loaded.
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*
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* @copyright 2008 Tim Hunt
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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* @since Moodle 2.0
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*/
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class quiz {
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/** @var stdClass the course settings from the database. */
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protected $course;
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/** @var stdClass the course_module settings from the database. */
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protected $cm;
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/** @var stdClass the quiz settings from the database. */
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protected $quiz;
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/** @var context the quiz context. */
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protected $context;
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/** @var array of questions augmented with slot information. */
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protected $questions = null;
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/** @var array of quiz_section rows. */
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protected $sections = null;
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/** @var quiz_access_manager the access manager for this quiz. */
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protected $accessmanager = null;
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/** @var bool whether the current user has capability mod/quiz:preview. */
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protected $ispreviewuser = null;
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// Constructor =============================================================
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/**
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* Constructor, assuming we already have the necessary data loaded.
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*
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* @param object $quiz the row from the quiz table.
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* @param object $cm the course_module object for this quiz.
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* @param object $course the row from the course table for the course we belong to.
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* @param bool $getcontext intended for testing - stops the constructor getting the context.
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*/
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public function __construct($quiz, $cm, $course, $getcontext = true) {
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$this->quiz = $quiz;
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$this->cm = $cm;
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$this->quiz->cmid = $this->cm->id;
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$this->course = $course;
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if ($getcontext && !empty($cm->id)) {
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$this->context = context_module::instance($cm->id);
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}
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}
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/**
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* Static function to create a new quiz object for a specific user.
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*
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* @param int $quizid the the quiz id.
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* @param int $userid the the userid.
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* @return quiz the new quiz object
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*/
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public static function create($quizid, $userid = null) {
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global $DB;
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$quiz = quiz_access_manager::load_quiz_and_settings($quizid);
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$course = $DB->get_record('course', array('id' => $quiz->course), '*', MUST_EXIST);
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$cm = get_coursemodule_from_instance('quiz', $quiz->id, $course->id, false, MUST_EXIST);
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// Update quiz with override information.
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if ($userid) {
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$quiz = quiz_update_effective_access($quiz, $userid);
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}
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return new quiz($quiz, $cm, $course);
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}
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/**
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* Create a {@link quiz_attempt} for an attempt at this quiz.
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* @param object $attemptdata row from the quiz_attempts table.
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* @return quiz_attempt the new quiz_attempt object.
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*/
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public function create_attempt_object($attemptdata) {
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return new quiz_attempt($attemptdata, $this->quiz, $this->cm, $this->course);
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}
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// Functions for loading more data =========================================
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/**
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* Load just basic information about all the questions in this quiz.
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*/
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public function preload_questions() {
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$this->questions = question_preload_questions(null,
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'slot.maxmark, slot.id AS slotid, slot.slot, slot.page,
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slot.questioncategoryid AS randomfromcategory,
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slot.includingsubcategories AS randomincludingsubcategories',
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'{quiz_slots} slot ON slot.quizid = :quizid AND q.id = slot.questionid',
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array('quizid' => $this->quiz->id), 'slot.slot');
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}
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/**
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* Fully load some or all of the questions for this quiz. You must call
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* {@link preload_questions()} first.
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*
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* @param array $questionids question ids of the questions to load. null for all.
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*/
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public function load_questions($questionids = null) {
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if ($this->questions === null) {
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throw new coding_exception('You must call preload_questions before calling load_questions.');
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}
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if (is_null($questionids)) {
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$questionids = array_keys($this->questions);
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}
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$questionstoprocess = array();
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foreach ($questionids as $id) {
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if (array_key_exists($id, $this->questions)) {
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$questionstoprocess[$id] = $this->questions[$id];
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}
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}
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get_question_options($questionstoprocess);
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}
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/**
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* Get an instance of the {@link \mod_quiz\structure} class for this quiz.
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* @return \mod_quiz\structure describes the questions in the quiz.
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*/
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public function get_structure() {
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return \mod_quiz\structure::create_for_quiz($this);
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}
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// Simple getters ==========================================================
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/** @return int the course id. */
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public function get_courseid() {
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return $this->course->id;
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}
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/** @return object the row of the course table. */
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public function get_course() {
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return $this->course;
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}
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/** @return int the quiz id. */
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public function get_quizid() {
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return $this->quiz->id;
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}
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/** @return object the row of the quiz table. */
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public function get_quiz() {
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return $this->quiz;
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}
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/** @return string the name of this quiz. */
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public function get_quiz_name() {
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return $this->quiz->name;
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}
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/** @return int the quiz navigation method. */
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public function get_navigation_method() {
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return $this->quiz->navmethod;
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}
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/** @return int the number of attempts allowed at this quiz (0 = infinite). */
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public function get_num_attempts_allowed() {
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return $this->quiz->attempts;
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}
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/** @return int the course_module id. */
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public function get_cmid() {
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return $this->cm->id;
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}
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/** @return object the course_module object. */
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public function get_cm() {
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return $this->cm;
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}
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/** @return object the module context for this quiz. */
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public function get_context() {
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return $this->context;
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}
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/**
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* @return bool wether the current user is someone who previews the quiz,
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* rather than attempting it.
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*/
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public function is_preview_user() {
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if (is_null($this->ispreviewuser)) {
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$this->ispreviewuser = has_capability('mod/quiz:preview', $this->context);
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}
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return $this->ispreviewuser;
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}
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/**
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* Checks user enrollment in the current course.
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*
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* @param int $userid
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* @return null|stdClass user record
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*/
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public function is_participant($userid) {
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return is_enrolled($this->get_context(), $userid, 'mod/quiz:attempt', $this->show_only_active_users());
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}
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/**
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* Check is only active users in course should be shown.
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*
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* @return bool true if only active users should be shown.
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*/
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public function show_only_active_users() {
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return !has_capability('moodle/course:viewsuspendedusers', $this->get_context());
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}
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/**
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* @return whether any questions have been added to this quiz.
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*/
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public function has_questions() {
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if ($this->questions === null) {
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$this->preload_questions();
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}
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return !empty($this->questions);
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}
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/**
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* @param int $id the question id.
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* @return object the question object with that id.
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*/
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public function get_question($id) {
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return $this->questions[$id];
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}
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/**
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* @param array $questionids question ids of the questions to load. null for all.
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*/
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public function get_questions($questionids = null) {
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if (is_null($questionids)) {
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$questionids = array_keys($this->questions);
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}
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$questions = array();
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foreach ($questionids as $id) {
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if (!array_key_exists($id, $this->questions)) {
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throw new moodle_exception('cannotstartmissingquestion', 'quiz', $this->view_url());
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}
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$questions[$id] = $this->questions[$id];
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$this->ensure_question_loaded($id);
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}
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return $questions;
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}
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/**
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* Get all the sections in this quiz.
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* @return array 0, 1, 2, ... => quiz_sections row from the database.
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*/
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public function get_sections() {
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global $DB;
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if ($this->sections === null) {
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$this->sections = array_values($DB->get_records('quiz_sections',
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array('quizid' => $this->get_quizid()), 'firstslot'));
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}
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return $this->sections;
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}
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/**
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* Return quiz_access_manager and instance of the quiz_access_manager class
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* for this quiz at this time.
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* @param int $timenow the current time as a unix timestamp.
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* @return quiz_access_manager and instance of the quiz_access_manager class
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* for this quiz at this time.
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*/
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public function get_access_manager($timenow) {
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if (is_null($this->accessmanager)) {
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$this->accessmanager = new quiz_access_manager($this, $timenow,
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has_capability('mod/quiz:ignoretimelimits', $this->context, null, false));
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}
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return $this->accessmanager;
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}
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/**
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* Wrapper round the has_capability funciton that automatically passes in the quiz context.
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*/
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public function has_capability($capability, $userid = null, $doanything = true) {
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return has_capability($capability, $this->context, $userid, $doanything);
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}
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/**
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* Wrapper round the require_capability funciton that automatically passes in the quiz context.
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*/
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public function require_capability($capability, $userid = null, $doanything = true) {
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return require_capability($capability, $this->context, $userid, $doanything);
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}
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// URLs related to this attempt ============================================
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/**
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* @return string the URL of this quiz's view page.
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*/
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public function view_url() {
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global $CFG;
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return $CFG->wwwroot . '/mod/quiz/view.php?id=' . $this->cm->id;
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}
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/**
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* @return string the URL of this quiz's edit page.
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*/
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public function edit_url() {
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global $CFG;
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return $CFG->wwwroot . '/mod/quiz/edit.php?cmid=' . $this->cm->id;
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}
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/**
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* @param int $attemptid the id of an attempt.
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* @param int $page optional page number to go to in the attempt.
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* @return string the URL of that attempt.
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*/
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public function attempt_url($attemptid, $page = 0) {
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global $CFG;
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$url = $CFG->wwwroot . '/mod/quiz/attempt.php?attempt=' . $attemptid;
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if ($page) {
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$url .= '&page=' . $page;
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}
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$url .= '&cmid=' . $this->get_cmid();
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return $url;
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}
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/**
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* @return string the URL of this quiz's edit page. Needs to be POSTed to with a cmid parameter.
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*/
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public function start_attempt_url($page = 0) {
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$params = array('cmid' => $this->cm->id, 'sesskey' => sesskey());
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if ($page) {
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$params['page'] = $page;
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}
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return new moodle_url('/mod/quiz/startattempt.php', $params);
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}
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/**
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* @param int $attemptid the id of an attempt.
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* @return string the URL of the review of that attempt.
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*/
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public function review_url($attemptid) {
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return new moodle_url('/mod/quiz/review.php', array('attempt' => $attemptid, 'cmid' => $this->get_cmid()));
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}
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/**
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* @param int $attemptid the id of an attempt.
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* @return string the URL of the review of that attempt.
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*/
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public function summary_url($attemptid) {
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return new moodle_url('/mod/quiz/summary.php', array('attempt' => $attemptid, 'cmid' => $this->get_cmid()));
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}
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// Bits of content =========================================================
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/**
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* @param bool $notused not used.
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* @return string an empty string.
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* @deprecated since 3.1. This sort of functionality is now entirely handled by quiz access rules.
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*/
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public function confirm_start_attempt_message($notused) {
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debugging('confirm_start_attempt_message is deprecated. ' .
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'This sort of functionality is now entirely handled by quiz access rules.');
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return '';
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}
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/**
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* If $reviewoptions->attempt is false, meaning that students can't review this
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* attempt at the moment, return an appropriate string explaining why.
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*
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* @param int $when One of the mod_quiz_display_options::DURING,
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* IMMEDIATELY_AFTER, LATER_WHILE_OPEN or AFTER_CLOSE constants.
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* @param bool $short if true, return a shorter string.
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* @return string an appropraite message.
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*/
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public function cannot_review_message($when, $short = false) {
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if ($short) {
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$langstrsuffix = 'short';
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$dateformat = get_string('strftimedatetimeshort', 'langconfig');
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} else {
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$langstrsuffix = '';
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$dateformat = '';
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}
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if ($when == mod_quiz_display_options::DURING ||
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$when == mod_quiz_display_options::IMMEDIATELY_AFTER) {
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return '';
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} else if ($when == mod_quiz_display_options::LATER_WHILE_OPEN && $this->quiz->timeclose &&
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$this->quiz->reviewattempt & mod_quiz_display_options::AFTER_CLOSE) {
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return get_string('noreviewuntil' . $langstrsuffix, 'quiz',
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userdate($this->quiz->timeclose, $dateformat));
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} else {
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return get_string('noreview' . $langstrsuffix, 'quiz');
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}
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}
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/**
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* @param string $title the name of this particular quiz page.
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* @return array the data that needs to be sent to print_header_simple as the $navigation
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* parameter.
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*/
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public function navigation($title) {
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global $PAGE;
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$PAGE->navbar->add($title);
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return '';
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}
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// Private methods =========================================================
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/**
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* Check that the definition of a particular question is loaded, and if not throw an exception.
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* @param $id a questionid.
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*/
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protected function ensure_question_loaded($id) {
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if (isset($this->questions[$id]->_partiallyloaded)) {
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throw new moodle_quiz_exception($this, 'questionnotloaded', $id);
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}
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}
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/**
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* Return all the question types used in this quiz.
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*
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* @param boolean $includepotential if the quiz include random questions, setting this flag to true will make the function to
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* return all the possible question types in the random questions category
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* @return array a sorted array including the different question types
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* @since Moodle 3.1
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*/
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public function get_all_question_types_used($includepotential = false) {
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$questiontypes = array();
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// To control if we need to look in categories for questions.
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$qcategories = array();
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// We must be careful with random questions, if we find a random question we must assume that the quiz may content
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// any of the questions in the referenced category (or subcategories).
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foreach ($this->get_questions() as $questiondata) {
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if ($questiondata->qtype == 'random' and $includepotential) {
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$includesubcategories = (bool) $questiondata->questiontext;
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if (!isset($qcategories[$questiondata->category])) {
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$qcategories[$questiondata->category] = false;
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}
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if ($includesubcategories) {
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$qcategories[$questiondata->category] = true;
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}
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} else {
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if (!in_array($questiondata->qtype, $questiontypes)) {
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$questiontypes[] = $questiondata->qtype;
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}
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}
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}
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if (!empty($qcategories)) {
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// We have to look for all the question types in these categories.
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$categoriestolook = array();
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foreach ($qcategories as $cat => $includesubcats) {
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if ($includesubcats) {
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$categoriestolook = array_merge($categoriestolook, question_categorylist($cat));
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} else {
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$categoriestolook[] = $cat;
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}
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}
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$questiontypesincategories = question_bank::get_all_question_types_in_categories($categoriestolook);
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$questiontypes = array_merge($questiontypes, $questiontypesincategories);
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}
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$questiontypes = array_unique($questiontypes);
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sort($questiontypes);
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return $questiontypes;
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}
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}
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/**
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* This class extends the quiz class to hold data about the state of a particular attempt,
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* in addition to the data about the quiz.
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*
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* @copyright 2008 Tim Hunt
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
|
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* @since Moodle 2.0
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*/
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class quiz_attempt {
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/** @var string to identify the in progress state. */
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const IN_PROGRESS = 'inprogress';
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/** @var string to identify the overdue state. */
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const OVERDUE = 'overdue';
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/** @var string to identify the finished state. */
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const FINISHED = 'finished';
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/** @var string to identify the abandoned state. */
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const ABANDONED = 'abandoned';
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/** @var int maximum number of slots in the quiz for the review page to default to show all. */
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const MAX_SLOTS_FOR_DEFAULT_REVIEW_SHOW_ALL = 50;
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/** @var quiz object containing the quiz settings. */
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protected $quizobj;
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/** @var stdClass the quiz_attempts row. */
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protected $attempt;
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/** @var question_usage_by_activity the question usage for this quiz attempt. */
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protected $quba;
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/**
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* @var array of slot information. These objects contain ->slot (int),
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* ->requireprevious (bool), ->questionids (int) the original question for random questions,
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* ->firstinsection (bool), ->section (stdClass from $this->sections).
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* This does not contain page - get that from {@link get_question_page()} -
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* or maxmark - get that from $this->quba.
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*/
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protected $slots;
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/** @var array of quiz_sections rows, with a ->lastslot field added. */
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protected $sections;
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/** @var array page no => array of slot numbers on the page in order. */
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protected $pagelayout;
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/** @var array slot => displayed question number for this slot. (E.g. 1, 2, 3 or 'i'.) */
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protected $questionnumbers;
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/** @var array slot => page number for this slot. */
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protected $questionpages;
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/** @var mod_quiz_display_options cache for the appropriate review options. */
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protected $reviewoptions = null;
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// Constructor =============================================================
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/**
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* Constructor assuming we already have the necessary data loaded.
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*
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* @param object $attempt the row of the quiz_attempts table.
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* @param object $quiz the quiz object for this attempt and user.
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* @param object $cm the course_module object for this quiz.
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* @param object $course the row from the course table for the course we belong to.
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* @param bool $loadquestions (optional) if true, the default, load all the details
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* of the state of each question. Else just set up the basic details of the attempt.
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*/
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public function __construct($attempt, $quiz, $cm, $course, $loadquestions = true) {
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global $DB;
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$this->attempt = $attempt;
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$this->quizobj = new quiz($quiz, $cm, $course);
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if (!$loadquestions) {
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return;
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}
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$this->quba = question_engine::load_questions_usage_by_activity($this->attempt->uniqueid);
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$this->slots = $DB->get_records('quiz_slots',
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array('quizid' => $this->get_quizid()), 'slot',
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'slot, requireprevious, questionid, includingsubcategories');
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$this->sections = array_values($DB->get_records('quiz_sections',
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array('quizid' => $this->get_quizid()), 'firstslot'));
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$this->link_sections_and_slots();
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$this->determine_layout();
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$this->number_questions();
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}
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/**
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* Used by {create()} and {create_from_usage_id()}.
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* @param array $conditions passed to $DB->get_record('quiz_attempts', $conditions).
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*/
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protected static function create_helper($conditions) {
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global $DB;
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$attempt = $DB->get_record('quiz_attempts', $conditions, '*', MUST_EXIST);
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$quiz = quiz_access_manager::load_quiz_and_settings($attempt->quiz);
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$course = $DB->get_record('course', array('id' => $quiz->course), '*', MUST_EXIST);
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$cm = get_coursemodule_from_instance('quiz', $quiz->id, $course->id, false, MUST_EXIST);
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// Update quiz with override information.
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$quiz = quiz_update_effective_access($quiz, $attempt->userid);
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return new quiz_attempt($attempt, $quiz, $cm, $course);
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}
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/**
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* Static function to create a new quiz_attempt object given an attemptid.
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*
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* @param int $attemptid the attempt id.
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* @return quiz_attempt the new quiz_attempt object
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*/
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public static function create($attemptid) {
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return self::create_helper(array('id' => $attemptid));
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}
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/**
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* Static function to create a new quiz_attempt object given a usage id.
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*
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* @param int $usageid the attempt usage id.
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* @return quiz_attempt the new quiz_attempt object
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*/
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public static function create_from_usage_id($usageid) {
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return self::create_helper(array('uniqueid' => $usageid));
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}
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/**
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* @param string $state one of the state constants like IN_PROGRESS.
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* @return string the human-readable state name.
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*/
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public static function state_name($state) {
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return quiz_attempt_state_name($state);
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}
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/**
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* Let each slot know which section it is part of.
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*/
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protected function link_sections_and_slots() {
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foreach ($this->sections as $i => $section) {
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if (isset($this->sections[$i + 1])) {
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$section->lastslot = $this->sections[$i + 1]->firstslot - 1;
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} else {
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$section->lastslot = count($this->slots);
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}
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for ($slot = $section->firstslot; $slot <= $section->lastslot; $slot += 1) {
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$this->slots[$slot]->section = $section;
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}
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}
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}
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/**
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* Parse attempt->layout to populate the other arrays the represent the layout.
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*/
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protected function determine_layout() {
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$this->pagelayout = array();
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// Break up the layout string into pages.
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$pagelayouts = explode(',0', $this->attempt->layout);
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// Strip off any empty last page (normally there is one).
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if (end($pagelayouts) == '') {
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array_pop($pagelayouts);
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}
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// File the ids into the arrays.
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// Tracking which is the first slot in each section in this attempt is
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// trickier than you might guess, since the slots in this section
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// may be shuffled, so $section->firstslot (the lowest numbered slot in
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// the section) may not be the first one.
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$unseensections = $this->sections;
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$this->pagelayout = array();
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foreach ($pagelayouts as $page => $pagelayout) {
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$pagelayout = trim($pagelayout, ',');
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if ($pagelayout == '') {
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continue;
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}
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$this->pagelayout[$page] = explode(',', $pagelayout);
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foreach ($this->pagelayout[$page] as $slot) {
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$sectionkey = array_search($this->slots[$slot]->section, $unseensections);
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if ($sectionkey !== false) {
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$this->slots[$slot]->firstinsection = true;
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unset($unseensections[$sectionkey]);
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} else {
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$this->slots[$slot]->firstinsection = false;
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}
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}
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}
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}
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/**
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* Work out the number to display for each question/slot.
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*/
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protected function number_questions() {
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$number = 1;
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foreach ($this->pagelayout as $page => $slots) {
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foreach ($slots as $slot) {
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if ($length = $this->is_real_question($slot)) {
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$this->questionnumbers[$slot] = $number;
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$number += $length;
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} else {
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$this->questionnumbers[$slot] = get_string('infoshort', 'quiz');
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}
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$this->questionpages[$slot] = $page;
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}
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}
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}
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/**
|
|
* If the given page number is out of range (before the first page, or after
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|
* the last page, chnage it to be within range).
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|
* @param int $page the requested page number.
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* @return int a safe page number to use.
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*/
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public function force_page_number_into_range($page) {
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|
return min(max($page, 0), count($this->pagelayout) - 1);
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}
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// Simple getters ==========================================================
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|
public function get_quiz() {
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|
return $this->quizobj->get_quiz();
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}
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public function get_quizobj() {
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|
return $this->quizobj;
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}
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/** @return int the course id. */
|
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public function get_courseid() {
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|
return $this->quizobj->get_courseid();
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}
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/** @return int the course id. */
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public function get_course() {
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|
return $this->quizobj->get_course();
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}
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/** @return int the quiz id. */
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public function get_quizid() {
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return $this->quizobj->get_quizid();
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}
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/** @return string the name of this quiz. */
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|
public function get_quiz_name() {
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|
return $this->quizobj->get_quiz_name();
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}
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/** @return int the quiz navigation method. */
|
|
public function get_navigation_method() {
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|
return $this->quizobj->get_navigation_method();
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}
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/** @return object the course_module object. */
|
|
public function get_cm() {
|
|
return $this->quizobj->get_cm();
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}
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/** @return object the course_module object. */
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public function get_cmid() {
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return $this->quizobj->get_cmid();
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}
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|
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/**
|
|
* @return bool wether the current user is someone who previews the quiz,
|
|
* rather than attempting it.
|
|
*/
|
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public function is_preview_user() {
|
|
return $this->quizobj->is_preview_user();
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}
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|
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/** @return int the number of attempts allowed at this quiz (0 = infinite). */
|
|
public function get_num_attempts_allowed() {
|
|
return $this->quizobj->get_num_attempts_allowed();
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}
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/** @return int number fo pages in this quiz. */
|
|
public function get_num_pages() {
|
|
return count($this->pagelayout);
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}
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|
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/**
|
|
* @param int $timenow the current time as a unix timestamp.
|
|
* @return quiz_access_manager and instance of the quiz_access_manager class
|
|
* for this quiz at this time.
|
|
*/
|
|
public function get_access_manager($timenow) {
|
|
return $this->quizobj->get_access_manager($timenow);
|
|
}
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|
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/** @return int the attempt id. */
|
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public function get_attemptid() {
|
|
return $this->attempt->id;
|
|
}
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|
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/** @return int the attempt unique id. */
|
|
public function get_uniqueid() {
|
|
return $this->attempt->uniqueid;
|
|
}
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|
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/** @return object the row from the quiz_attempts table. */
|
|
public function get_attempt() {
|
|
return $this->attempt;
|
|
}
|
|
|
|
/** @return int the number of this attemp (is it this user's first, second, ... attempt). */
|
|
public function get_attempt_number() {
|
|
return $this->attempt->attempt;
|
|
}
|
|
|
|
/** @return string one of the quiz_attempt::IN_PROGRESS, FINISHED, OVERDUE or ABANDONED constants. */
|
|
public function get_state() {
|
|
return $this->attempt->state;
|
|
}
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|
|
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/** @return int the id of the user this attempt belongs to. */
|
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public function get_userid() {
|
|
return $this->attempt->userid;
|
|
}
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|
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/** @return int the current page of the attempt. */
|
|
public function get_currentpage() {
|
|
return $this->attempt->currentpage;
|
|
}
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|
|
|
public function get_sum_marks() {
|
|
return $this->attempt->sumgrades;
|
|
}
|
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|
|
/**
|
|
* @return bool whether this attempt has been finished (true) or is still
|
|
* in progress (false). Be warned that this is not just state == self::FINISHED,
|
|
* it also includes self::ABANDONED.
|
|
*/
|
|
public function is_finished() {
|
|
return $this->attempt->state == self::FINISHED || $this->attempt->state == self::ABANDONED;
|
|
}
|
|
|
|
/** @return bool whether this attempt is a preview attempt. */
|
|
public function is_preview() {
|
|
return $this->attempt->preview;
|
|
}
|
|
|
|
/**
|
|
* Is this someone dealing with their own attempt or preview?
|
|
*
|
|
* @return bool true => own attempt/preview. false => reviewing someone elses.
|
|
*/
|
|
public function is_own_attempt() {
|
|
global $USER;
|
|
return $this->attempt->userid == $USER->id;
|
|
}
|
|
|
|
/**
|
|
* @return bool whether this attempt is a preview belonging to the current user.
|
|
*/
|
|
public function is_own_preview() {
|
|
global $USER;
|
|
return $this->is_own_attempt() &&
|
|
$this->is_preview_user() && $this->attempt->preview;
|
|
}
|
|
|
|
/**
|
|
* Is the current user allowed to review this attempt. This applies when
|
|
* {@link is_own_attempt()} returns false.
|
|
* @return bool whether the review should be allowed.
|
|
*/
|
|
public function is_review_allowed() {
|
|
if (!$this->has_capability('mod/quiz:viewreports')) {
|
|
return false;
|
|
}
|
|
|
|
$cm = $this->get_cm();
|
|
if ($this->has_capability('moodle/site:accessallgroups') ||
|
|
groups_get_activity_groupmode($cm) != SEPARATEGROUPS) {
|
|
return true;
|
|
}
|
|
|
|
// Check the users have at least one group in common.
|
|
$teachersgroups = groups_get_activity_allowed_groups($cm);
|
|
$studentsgroups = groups_get_all_groups(
|
|
$cm->course, $this->attempt->userid, $cm->groupingid);
|
|
return $teachersgroups && $studentsgroups &&
|
|
array_intersect(array_keys($teachersgroups), array_keys($studentsgroups));
|
|
}
|
|
|
|
/**
|
|
* Has the student, in this attempt, engaged with the quiz in a non-trivial way?
|
|
* That is, is there any question worth a non-zero number of marks, where
|
|
* the student has made some response that we have saved?
|
|
* @return bool true if we have saved a response for at least one graded question.
|
|
*/
|
|
public function has_response_to_at_least_one_graded_question() {
|
|
foreach ($this->quba->get_attempt_iterator() as $qa) {
|
|
if ($qa->get_max_mark() == 0) {
|
|
continue;
|
|
}
|
|
if ($qa->get_num_steps() > 1) {
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Get extra summary information about this attempt.
|
|
*
|
|
* Some behaviours may be able to provide interesting summary information
|
|
* about the attempt as a whole, and this method provides access to that data.
|
|
* To see how this works, try setting a quiz to one of the CBM behaviours,
|
|
* and then look at the extra information displayed at the top of the quiz
|
|
* review page once you have sumitted an attempt.
|
|
*
|
|
* In the return value, the array keys are identifiers of the form
|
|
* qbehaviour_behaviourname_meaningfullkey. For qbehaviour_deferredcbm_highsummary.
|
|
* The values are arrays with two items, title and content. Each of these
|
|
* will be either a string, or a renderable.
|
|
*
|
|
* @param question_display_options $options the display options for this quiz attempt at this time.
|
|
* @return array as described above.
|
|
*/
|
|
public function get_additional_summary_data(question_display_options $options) {
|
|
return $this->quba->get_summary_information($options);
|
|
}
|
|
|
|
/**
|
|
* Get the overall feedback corresponding to a particular mark.
|
|
* @param $grade a particular grade.
|
|
*/
|
|
public function get_overall_feedback($grade) {
|
|
return quiz_feedback_for_grade($grade, $this->get_quiz(),
|
|
$this->quizobj->get_context());
|
|
}
|
|
|
|
/**
|
|
* Wrapper round the has_capability funciton that automatically passes in the quiz context.
|
|
*/
|
|
public function has_capability($capability, $userid = null, $doanything = true) {
|
|
return $this->quizobj->has_capability($capability, $userid, $doanything);
|
|
}
|
|
|
|
/**
|
|
* Wrapper round the require_capability funciton that automatically passes in the quiz context.
|
|
*/
|
|
public function require_capability($capability, $userid = null, $doanything = true) {
|
|
return $this->quizobj->require_capability($capability, $userid, $doanything);
|
|
}
|
|
|
|
/**
|
|
* Check the appropriate capability to see whether this user may review their own attempt.
|
|
* If not, prints an error.
|
|
*/
|
|
public function check_review_capability() {
|
|
if ($this->get_attempt_state() == mod_quiz_display_options::IMMEDIATELY_AFTER) {
|
|
$capability = 'mod/quiz:attempt';
|
|
} else {
|
|
$capability = 'mod/quiz:reviewmyattempts';
|
|
}
|
|
|
|
// These next tests are in a slighly funny order. The point is that the
|
|
// common and most performance-critical case is students attempting a quiz
|
|
// so we want to check that permisison first.
|
|
|
|
if ($this->has_capability($capability)) {
|
|
// User has the permission that lets you do the quiz as a student. Fine.
|
|
return;
|
|
}
|
|
|
|
if ($this->has_capability('mod/quiz:viewreports') ||
|
|
$this->has_capability('mod/quiz:preview')) {
|
|
// User has the permission that lets teachers review. Fine.
|
|
return;
|
|
}
|
|
|
|
// They should not be here. Trigger the standard no-permission error
|
|
// but using the name of the student capability.
|
|
// We know this will fail. We just want the stadard exception thown.
|
|
$this->require_capability($capability);
|
|
}
|
|
|
|
/**
|
|
* Checks whether a user may navigate to a particular slot
|
|
*/
|
|
public function can_navigate_to($slot) {
|
|
switch ($this->get_navigation_method()) {
|
|
case QUIZ_NAVMETHOD_FREE:
|
|
return true;
|
|
break;
|
|
case QUIZ_NAVMETHOD_SEQ:
|
|
return false;
|
|
break;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* @return int one of the mod_quiz_display_options::DURING,
|
|
* IMMEDIATELY_AFTER, LATER_WHILE_OPEN or AFTER_CLOSE constants.
|
|
*/
|
|
public function get_attempt_state() {
|
|
return quiz_attempt_state($this->get_quiz(), $this->attempt);
|
|
}
|
|
|
|
/**
|
|
* Wrapper that the correct mod_quiz_display_options for this quiz at the
|
|
* moment.
|
|
*
|
|
* @return question_display_options the render options for this user on this attempt.
|
|
*/
|
|
public function get_display_options($reviewing) {
|
|
if ($reviewing) {
|
|
if (is_null($this->reviewoptions)) {
|
|
$this->reviewoptions = quiz_get_review_options($this->get_quiz(),
|
|
$this->attempt, $this->quizobj->get_context());
|
|
if ($this->is_own_preview()) {
|
|
// It should always be possible for a teacher to review their
|
|
// own preview irrespective of the review options settings.
|
|
$this->reviewoptions->attempt = true;
|
|
}
|
|
}
|
|
return $this->reviewoptions;
|
|
|
|
} else {
|
|
$options = mod_quiz_display_options::make_from_quiz($this->get_quiz(),
|
|
mod_quiz_display_options::DURING);
|
|
$options->flags = quiz_get_flag_option($this->attempt, $this->quizobj->get_context());
|
|
return $options;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Wrapper that the correct mod_quiz_display_options for this quiz at the
|
|
* moment.
|
|
*
|
|
* @param bool $reviewing true for review page, else attempt page.
|
|
* @param int $slot which question is being displayed.
|
|
* @param moodle_url $thispageurl to return to after the editing form is
|
|
* submitted or cancelled. If null, no edit link will be generated.
|
|
*
|
|
* @return question_display_options the render options for this user on this
|
|
* attempt, with extra info to generate an edit link, if applicable.
|
|
*/
|
|
public function get_display_options_with_edit_link($reviewing, $slot, $thispageurl) {
|
|
$options = clone($this->get_display_options($reviewing));
|
|
|
|
if (!$thispageurl) {
|
|
return $options;
|
|
}
|
|
|
|
if (!($reviewing || $this->is_preview())) {
|
|
return $options;
|
|
}
|
|
|
|
$question = $this->quba->get_question($slot);
|
|
if (!question_has_capability_on($question, 'edit', $question->category)) {
|
|
return $options;
|
|
}
|
|
|
|
$options->editquestionparams['cmid'] = $this->get_cmid();
|
|
$options->editquestionparams['returnurl'] = $thispageurl;
|
|
|
|
return $options;
|
|
}
|
|
|
|
/**
|
|
* @param int $page page number
|
|
* @return bool true if this is the last page of the quiz.
|
|
*/
|
|
public function is_last_page($page) {
|
|
return $page == count($this->pagelayout) - 1;
|
|
}
|
|
|
|
/**
|
|
* Return the list of slot numbers for either a given page of the quiz, or for the
|
|
* whole quiz.
|
|
*
|
|
* @param mixed $page string 'all' or integer page number.
|
|
* @return array the requested list of slot numbers.
|
|
*/
|
|
public function get_slots($page = 'all') {
|
|
if ($page === 'all') {
|
|
$numbers = array();
|
|
foreach ($this->pagelayout as $numbersonpage) {
|
|
$numbers = array_merge($numbers, $numbersonpage);
|
|
}
|
|
return $numbers;
|
|
} else {
|
|
return $this->pagelayout[$page];
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Return the list of slot numbers for either a given page of the quiz, or for the
|
|
* whole quiz.
|
|
*
|
|
* @param mixed $page string 'all' or integer page number.
|
|
* @return array the requested list of slot numbers.
|
|
*/
|
|
public function get_active_slots($page = 'all') {
|
|
$activeslots = array();
|
|
foreach ($this->get_slots($page) as $slot) {
|
|
if (!$this->is_blocked_by_previous_question($slot)) {
|
|
$activeslots[] = $slot;
|
|
}
|
|
}
|
|
return $activeslots;
|
|
}
|
|
|
|
/**
|
|
* Helper method for unit tests. Get the underlying question usage object.
|
|
* @return question_usage_by_activity the usage.
|
|
*/
|
|
public function get_question_usage() {
|
|
if (!(PHPUNIT_TEST || defined('BEHAT_TEST'))) {
|
|
throw new coding_exception('get_question_usage is only for use in unit tests. ' .
|
|
'For other operations, use the quiz_attempt api, or extend it properly.');
|
|
}
|
|
return $this->quba;
|
|
}
|
|
|
|
/**
|
|
* Get the question_attempt object for a particular question in this attempt.
|
|
* @param int $slot the number used to identify this question within this attempt.
|
|
* @return question_attempt
|
|
*/
|
|
public function get_question_attempt($slot) {
|
|
return $this->quba->get_question_attempt($slot);
|
|
}
|
|
|
|
/**
|
|
* Get the question_attempt object for a particular question in this attempt.
|
|
* @param int $slot the number used to identify this question within this attempt.
|
|
* @return question_attempt
|
|
*/
|
|
public function all_question_attempts_originally_in_slot($slot) {
|
|
$qas = array();
|
|
foreach ($this->quba->get_attempt_iterator() as $qa) {
|
|
if ($qa->get_metadata('originalslot') == $slot) {
|
|
$qas[] = $qa;
|
|
}
|
|
}
|
|
$qas[] = $this->quba->get_question_attempt($slot);
|
|
return $qas;
|
|
}
|
|
|
|
/**
|
|
* Is a particular question in this attempt a real question, or something like a description.
|
|
* @param int $slot the number used to identify this question within this attempt.
|
|
* @return int whether that question is a real question. Actually returns the
|
|
* question length, which could theoretically be greater than one.
|
|
*/
|
|
public function is_real_question($slot) {
|
|
return $this->quba->get_question($slot)->length;
|
|
}
|
|
|
|
/**
|
|
* Is a particular question in this attempt a real question, or something like a description.
|
|
* @param int $slot the number used to identify this question within this attempt.
|
|
* @return bool whether that question is a real question.
|
|
*/
|
|
public function is_question_flagged($slot) {
|
|
return $this->quba->get_question_attempt($slot)->is_flagged();
|
|
}
|
|
|
|
/**
|
|
* Checks whether the question in this slot requires the previous question to have been completed.
|
|
*
|
|
* @param int $slot the number used to identify this question within this attempt.
|
|
* @return bool whether the previous question must have been completed before this one can be seen.
|
|
*/
|
|
public function is_blocked_by_previous_question($slot) {
|
|
return $slot > 1 && isset($this->slots[$slot]) && $this->slots[$slot]->requireprevious &&
|
|
!$this->slots[$slot]->section->shufflequestions &&
|
|
!$this->slots[$slot - 1]->section->shufflequestions &&
|
|
$this->get_navigation_method() != QUIZ_NAVMETHOD_SEQ &&
|
|
!$this->get_question_state($slot - 1)->is_finished() &&
|
|
$this->quba->can_question_finish_during_attempt($slot - 1);
|
|
}
|
|
|
|
/**
|
|
* Is it possible for this question to be re-started within this attempt?
|
|
*
|
|
* @param int $slot the number used to identify this question within this attempt.
|
|
* @return whether the student should be given the option to restart this question now.
|
|
*/
|
|
public function can_question_be_redone_now($slot) {
|
|
return $this->get_quiz()->canredoquestions && !$this->is_finished() &&
|
|
$this->get_question_state($slot)->is_finished();
|
|
}
|
|
|
|
/**
|
|
* Given a slot in this attempt, which may or not be a redone question, return the original slot.
|
|
*
|
|
* @param int $slot identifies a particular question in this attempt.
|
|
* @return int the slot where this question was originally.
|
|
*/
|
|
public function get_original_slot($slot) {
|
|
$originalslot = $this->quba->get_question_attempt_metadata($slot, 'originalslot');
|
|
if ($originalslot) {
|
|
return $originalslot;
|
|
} else {
|
|
return $slot;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Get the displayed question number for a slot.
|
|
* @param int $slot the number used to identify this question within this attempt.
|
|
* @return string the displayed question number for the question in this slot.
|
|
* For example '1', '2', '3' or 'i'.
|
|
*/
|
|
public function get_question_number($slot) {
|
|
return $this->questionnumbers[$slot];
|
|
}
|
|
|
|
/**
|
|
* If the section heading, if any, that should come just before this slot.
|
|
* @param int $slot identifies a particular question in this attempt.
|
|
* @return string the required heading, or null if there is not one here.
|
|
*/
|
|
public function get_heading_before_slot($slot) {
|
|
if ($this->slots[$slot]->firstinsection) {
|
|
return $this->slots[$slot]->section->heading;
|
|
} else {
|
|
return null;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Return the page of the quiz where this question appears.
|
|
* @param int $slot the number used to identify this question within this attempt.
|
|
* @return int the page of the quiz this question appears on.
|
|
*/
|
|
public function get_question_page($slot) {
|
|
return $this->questionpages[$slot];
|
|
}
|
|
|
|
/**
|
|
* Return the grade obtained on a particular question, if the user is permitted
|
|
* to see it. You must previously have called load_question_states to load the
|
|
* state data about this question.
|
|
*
|
|
* @param int $slot the number used to identify this question within this attempt.
|
|
* @return string the formatted grade, to the number of decimal places specified
|
|
* by the quiz.
|
|
*/
|
|
public function get_question_name($slot) {
|
|
return $this->quba->get_question($slot)->name;
|
|
}
|
|
|
|
/**
|
|
* Return the {@link question_state} that this question is in.
|
|
*
|
|
* @param int $slot the number used to identify this question within this attempt.
|
|
* @return question_state the state this question is in.
|
|
*/
|
|
public function get_question_state($slot) {
|
|
return $this->quba->get_question_state($slot);
|
|
}
|
|
|
|
/**
|
|
* Return the grade obtained on a particular question, if the user is permitted
|
|
* to see it. You must previously have called load_question_states to load the
|
|
* state data about this question.
|
|
*
|
|
* @param int $slot the number used to identify this question within this attempt.
|
|
* @param bool $showcorrectness Whether right/partial/wrong states should
|
|
* be distinguised.
|
|
* @return string the formatted grade, to the number of decimal places specified
|
|
* by the quiz.
|
|
*/
|
|
public function get_question_status($slot, $showcorrectness) {
|
|
return $this->quba->get_question_state_string($slot, $showcorrectness);
|
|
}
|
|
|
|
/**
|
|
* Return the grade obtained on a particular question, if the user is permitted
|
|
* to see it. You must previously have called load_question_states to load the
|
|
* state data about this question.
|
|
*
|
|
* @param int $slot the number used to identify this question within this attempt.
|
|
* @param bool $showcorrectness Whether right/partial/wrong states should
|
|
* be distinguised.
|
|
* @return string class name for this state.
|
|
*/
|
|
public function get_question_state_class($slot, $showcorrectness) {
|
|
return $this->quba->get_question_state_class($slot, $showcorrectness);
|
|
}
|
|
|
|
/**
|
|
* Return the grade obtained on a particular question.
|
|
* You must previously have called load_question_states to load the state
|
|
* data about this question.
|
|
*
|
|
* @param int $slot the number used to identify this question within this attempt.
|
|
* @return string the formatted grade, to the number of decimal places specified by the quiz.
|
|
*/
|
|
public function get_question_mark($slot) {
|
|
return quiz_format_question_grade($this->get_quiz(), $this->quba->get_question_mark($slot));
|
|
}
|
|
|
|
/**
|
|
* Get the time of the most recent action performed on a question.
|
|
* @param int $slot the number used to identify this question within this usage.
|
|
* @return int timestamp.
|
|
*/
|
|
public function get_question_action_time($slot) {
|
|
return $this->quba->get_question_action_time($slot);
|
|
}
|
|
|
|
/**
|
|
* Return the question type name for a given slot within the current attempt.
|
|
*
|
|
* @param int $slot the number used to identify this question within this attempt.
|
|
* @return string the question type name
|
|
* @since Moodle 3.1
|
|
*/
|
|
public function get_question_type_name($slot) {
|
|
return $this->quba->get_question($slot)->get_type_name();
|
|
}
|
|
|
|
/**
|
|
* Get the time remaining for an in-progress attempt, if the time is short
|
|
* enought that it would be worth showing a timer.
|
|
* @param int $timenow the time to consider as 'now'.
|
|
* @return int|false the number of seconds remaining for this attempt.
|
|
* False if there is no limit.
|
|
*/
|
|
public function get_time_left_display($timenow) {
|
|
if ($this->attempt->state != self::IN_PROGRESS) {
|
|
return false;
|
|
}
|
|
return $this->get_access_manager($timenow)->get_time_left_display($this->attempt, $timenow);
|
|
}
|
|
|
|
|
|
/**
|
|
* @return int the time when this attempt was submitted. 0 if it has not been
|
|
* submitted yet.
|
|
*/
|
|
public function get_submitted_date() {
|
|
return $this->attempt->timefinish;
|
|
}
|
|
|
|
/**
|
|
* If the attempt is in an applicable state, work out the time by which the
|
|
* student should next do something.
|
|
* @return int timestamp by which the student needs to do something.
|
|
*/
|
|
public function get_due_date() {
|
|
$deadlines = array();
|
|
if ($this->quizobj->get_quiz()->timelimit) {
|
|
$deadlines[] = $this->attempt->timestart + $this->quizobj->get_quiz()->timelimit;
|
|
}
|
|
if ($this->quizobj->get_quiz()->timeclose) {
|
|
$deadlines[] = $this->quizobj->get_quiz()->timeclose;
|
|
}
|
|
if ($deadlines) {
|
|
$duedate = min($deadlines);
|
|
} else {
|
|
return false;
|
|
}
|
|
|
|
switch ($this->attempt->state) {
|
|
case self::IN_PROGRESS:
|
|
return $duedate;
|
|
|
|
case self::OVERDUE:
|
|
return $duedate + $this->quizobj->get_quiz()->graceperiod;
|
|
|
|
default:
|
|
throw new coding_exception('Unexpected state: ' . $this->attempt->state);
|
|
}
|
|
}
|
|
|
|
// URLs related to this attempt ============================================
|
|
/**
|
|
* @return string quiz view url.
|
|
*/
|
|
public function view_url() {
|
|
return $this->quizobj->view_url();
|
|
}
|
|
|
|
/**
|
|
* @return string the URL of this quiz's edit page. Needs to be POSTed to with a cmid parameter.
|
|
*/
|
|
public function start_attempt_url($slot = null, $page = -1) {
|
|
if ($page == -1 && !is_null($slot)) {
|
|
$page = $this->get_question_page($slot);
|
|
} else {
|
|
$page = 0;
|
|
}
|
|
return $this->quizobj->start_attempt_url($page);
|
|
}
|
|
|
|
/**
|
|
* @param int $slot if speified, the slot number of a specific question to link to.
|
|
* @param int $page if specified, a particular page to link to. If not givem deduced
|
|
* from $slot, or goes to the first page.
|
|
* @param int $questionid a question id. If set, will add a fragment to the URL
|
|
* to jump to a particuar question on the page.
|
|
* @param int $thispage if not -1, the current page. Will cause links to other things on
|
|
* this page to be output as only a fragment.
|
|
* @return string the URL to continue this attempt.
|
|
*/
|
|
public function attempt_url($slot = null, $page = -1, $thispage = -1) {
|
|
return $this->page_and_question_url('attempt', $slot, $page, false, $thispage);
|
|
}
|
|
|
|
/**
|
|
* @return string the URL of this quiz's summary page.
|
|
*/
|
|
public function summary_url() {
|
|
return new moodle_url('/mod/quiz/summary.php', array('attempt' => $this->attempt->id, 'cmid' => $this->get_cmid()));
|
|
}
|
|
|
|
/**
|
|
* @return string the URL of this quiz's summary page.
|
|
*/
|
|
public function processattempt_url() {
|
|
return new moodle_url('/mod/quiz/processattempt.php');
|
|
}
|
|
|
|
/**
|
|
* @param int $slot indicates which question to link to.
|
|
* @param int $page if specified, the URL of this particular page of the attempt, otherwise
|
|
* the URL will go to the first page. If -1, deduce $page from $slot.
|
|
* @param bool|null $showall if true, the URL will be to review the entire attempt on one page,
|
|
* and $page will be ignored. If null, a sensible default will be chosen.
|
|
* @param int $thispage if not -1, the current page. Will cause links to other things on
|
|
* this page to be output as only a fragment.
|
|
* @return string the URL to review this attempt.
|
|
*/
|
|
public function review_url($slot = null, $page = -1, $showall = null, $thispage = -1) {
|
|
return $this->page_and_question_url('review', $slot, $page, $showall, $thispage);
|
|
}
|
|
|
|
/**
|
|
* By default, should this script show all questions on one page for this attempt?
|
|
* @param string $script the script name, e.g. 'attempt', 'summary', 'review'.
|
|
* @return whether show all on one page should be on by default.
|
|
*/
|
|
public function get_default_show_all($script) {
|
|
return $script == 'review' && count($this->questionpages) < self::MAX_SLOTS_FOR_DEFAULT_REVIEW_SHOW_ALL;
|
|
}
|
|
|
|
// Bits of content =========================================================
|
|
|
|
/**
|
|
* If $reviewoptions->attempt is false, meaning that students can't review this
|
|
* attempt at the moment, return an appropriate string explaining why.
|
|
*
|
|
* @param bool $short if true, return a shorter string.
|
|
* @return string an appropraite message.
|
|
*/
|
|
public function cannot_review_message($short = false) {
|
|
return $this->quizobj->cannot_review_message(
|
|
$this->get_attempt_state(), $short);
|
|
}
|
|
|
|
/**
|
|
* Initialise the JS etc. required all the questions on a page.
|
|
* @param mixed $page a page number, or 'all'.
|
|
*/
|
|
public function get_html_head_contributions($page = 'all', $showall = false) {
|
|
if ($showall) {
|
|
$page = 'all';
|
|
}
|
|
$result = '';
|
|
foreach ($this->get_slots($page) as $slot) {
|
|
$result .= $this->quba->render_question_head_html($slot);
|
|
}
|
|
$result .= question_engine::initialise_js();
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* Initialise the JS etc. required by one question.
|
|
* @param int $questionid the question id.
|
|
*/
|
|
public function get_question_html_head_contributions($slot) {
|
|
return $this->quba->render_question_head_html($slot) .
|
|
question_engine::initialise_js();
|
|
}
|
|
|
|
/**
|
|
* Print the HTML for the start new preview button, if the current user
|
|
* is allowed to see one.
|
|
*/
|
|
public function restart_preview_button() {
|
|
global $OUTPUT;
|
|
if ($this->is_preview() && $this->is_preview_user()) {
|
|
return $OUTPUT->single_button(new moodle_url(
|
|
$this->start_attempt_url(), array('forcenew' => true)),
|
|
get_string('startnewpreview', 'quiz'));
|
|
} else {
|
|
return '';
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Generate the HTML that displayes the question in its current state, with
|
|
* the appropriate display options.
|
|
*
|
|
* @param int $slot identifies the question in the attempt.
|
|
* @param bool $reviewing is the being printed on an attempt or a review page.
|
|
* @param mod_quiz_renderer $renderer the quiz renderer.
|
|
* @param moodle_url $thispageurl the URL of the page this question is being printed on.
|
|
* @return string HTML for the question in its current state.
|
|
*/
|
|
public function render_question($slot, $reviewing, mod_quiz_renderer $renderer, $thispageurl = null) {
|
|
if ($this->is_blocked_by_previous_question($slot)) {
|
|
$placeholderqa = $this->make_blocked_question_placeholder($slot);
|
|
|
|
$displayoptions = $this->get_display_options($reviewing);
|
|
$displayoptions->manualcomment = question_display_options::HIDDEN;
|
|
$displayoptions->history = question_display_options::HIDDEN;
|
|
$displayoptions->readonly = true;
|
|
|
|
return html_writer::div($placeholderqa->render($displayoptions,
|
|
$this->get_question_number($this->get_original_slot($slot))),
|
|
'mod_quiz-blocked_question_warning');
|
|
}
|
|
|
|
return $this->render_question_helper($slot, $reviewing, $thispageurl, $renderer, null);
|
|
}
|
|
|
|
/**
|
|
* Helper used by {@link render_question()} and {@link render_question_at_step()}.
|
|
*
|
|
* @param int $slot identifies the question in the attempt.
|
|
* @param bool $reviewing is the being printed on an attempt or a review page.
|
|
* @param moodle_url $thispageurl the URL of the page this question is being printed on.
|
|
* @param mod_quiz_renderer $renderer the quiz renderer.
|
|
* @param int|null $seq the seq number of the past state to display.
|
|
* @return string HTML fragment.
|
|
*/
|
|
protected function render_question_helper($slot, $reviewing, $thispageurl, mod_quiz_renderer $renderer, $seq) {
|
|
$originalslot = $this->get_original_slot($slot);
|
|
$number = $this->get_question_number($originalslot);
|
|
$displayoptions = $this->get_display_options_with_edit_link($reviewing, $slot, $thispageurl);
|
|
|
|
if ($slot != $originalslot) {
|
|
$originalmaxmark = $this->get_question_attempt($slot)->get_max_mark();
|
|
$this->get_question_attempt($slot)->set_max_mark($this->get_question_attempt($originalslot)->get_max_mark());
|
|
}
|
|
|
|
if ($this->can_question_be_redone_now($slot)) {
|
|
$displayoptions->extrainfocontent = $renderer->redo_question_button(
|
|
$slot, $displayoptions->readonly);
|
|
}
|
|
|
|
if ($displayoptions->history && $displayoptions->questionreviewlink) {
|
|
$links = $this->links_to_other_redos($slot, $displayoptions->questionreviewlink);
|
|
if ($links) {
|
|
$displayoptions->extrahistorycontent = html_writer::tag('p',
|
|
get_string('redoesofthisquestion', 'quiz', $renderer->render($links)));
|
|
}
|
|
}
|
|
|
|
if ($seq === null) {
|
|
$output = $this->quba->render_question($slot, $displayoptions, $number);
|
|
} else {
|
|
$output = $this->quba->render_question_at_step($slot, $seq, $displayoptions, $number);
|
|
}
|
|
|
|
if ($slot != $originalslot) {
|
|
$this->get_question_attempt($slot)->set_max_mark($originalmaxmark);
|
|
}
|
|
|
|
return $output;
|
|
}
|
|
|
|
/**
|
|
* Create a fake question to be displayed in place of a question that is blocked
|
|
* until the previous question has been answered.
|
|
*
|
|
* @param int $slot int slot number of the question to replace.
|
|
* @return question_definition the placeholde question.
|
|
*/
|
|
protected function make_blocked_question_placeholder($slot) {
|
|
$replacedquestion = $this->get_question_attempt($slot)->get_question();
|
|
|
|
question_bank::load_question_definition_classes('description');
|
|
$question = new qtype_description_question();
|
|
$question->id = $replacedquestion->id;
|
|
$question->category = null;
|
|
$question->parent = 0;
|
|
$question->qtype = question_bank::get_qtype('description');
|
|
$question->name = '';
|
|
$question->questiontext = get_string('questiondependsonprevious', 'quiz');
|
|
$question->questiontextformat = FORMAT_HTML;
|
|
$question->generalfeedback = '';
|
|
$question->defaultmark = $this->quba->get_question_max_mark($slot);
|
|
$question->length = $replacedquestion->length;
|
|
$question->penalty = 0;
|
|
$question->stamp = '';
|
|
$question->version = 0;
|
|
$question->hidden = 0;
|
|
$question->timecreated = null;
|
|
$question->timemodified = null;
|
|
$question->createdby = null;
|
|
$question->modifiedby = null;
|
|
|
|
$placeholderqa = new question_attempt($question, $this->quba->get_id(),
|
|
null, $this->quba->get_question_max_mark($slot));
|
|
$placeholderqa->set_slot($slot);
|
|
$placeholderqa->start($this->get_quiz()->preferredbehaviour, 1);
|
|
$placeholderqa->set_flagged($this->is_question_flagged($slot));
|
|
return $placeholderqa;
|
|
}
|
|
|
|
/**
|
|
* Like {@link render_question()} but displays the question at the past step
|
|
* indicated by $seq, rather than showing the latest step.
|
|
*
|
|
* @param int $id the id of a question in this quiz attempt.
|
|
* @param int $seq the seq number of the past state to display.
|
|
* @param bool $reviewing is the being printed on an attempt or a review page.
|
|
* @param mod_quiz_renderer $renderer the quiz renderer.
|
|
* @param string $thispageurl the URL of the page this question is being printed on.
|
|
* @return string HTML for the question in its current state.
|
|
*/
|
|
public function render_question_at_step($slot, $seq, $reviewing, mod_quiz_renderer $renderer, $thispageurl = '') {
|
|
return $this->render_question_helper($slot, $reviewing, $thispageurl, $renderer, $seq);
|
|
}
|
|
|
|
/**
|
|
* Wrapper round print_question from lib/questionlib.php.
|
|
*
|
|
* @param int $id the id of a question in this quiz attempt.
|
|
*/
|
|
public function render_question_for_commenting($slot) {
|
|
$options = $this->get_display_options(true);
|
|
$options->hide_all_feedback();
|
|
$options->manualcomment = question_display_options::EDITABLE;
|
|
return $this->quba->render_question($slot, $options,
|
|
$this->get_question_number($slot));
|
|
}
|
|
|
|
/**
|
|
* Check wheter access should be allowed to a particular file.
|
|
*
|
|
* @param int $id the id of a question in this quiz attempt.
|
|
* @param bool $reviewing is the being printed on an attempt or a review page.
|
|
* @param string $thispageurl the URL of the page this question is being printed on.
|
|
* @return string HTML for the question in its current state.
|
|
*/
|
|
public function check_file_access($slot, $reviewing, $contextid, $component,
|
|
$filearea, $args, $forcedownload) {
|
|
$options = $this->get_display_options($reviewing);
|
|
|
|
// Check permissions - warning there is similar code in review.php and
|
|
// reviewquestion.php. If you change on, change them all.
|
|
if ($reviewing && $this->is_own_attempt() && !$options->attempt) {
|
|
return false;
|
|
}
|
|
|
|
if ($reviewing && !$this->is_own_attempt() && !$this->is_review_allowed()) {
|
|
return false;
|
|
}
|
|
|
|
return $this->quba->check_file_access($slot, $options,
|
|
$component, $filearea, $args, $forcedownload);
|
|
}
|
|
|
|
/**
|
|
* Get the navigation panel object for this attempt.
|
|
*
|
|
* @param $panelclass The type of panel, quiz_attempt_nav_panel or quiz_review_nav_panel
|
|
* @param $page the current page number.
|
|
* @param $showall whether we are showing the whole quiz on one page. (Used by review.php)
|
|
* @return quiz_nav_panel_base the requested object.
|
|
*/
|
|
public function get_navigation_panel(mod_quiz_renderer $output,
|
|
$panelclass, $page, $showall = false) {
|
|
$panel = new $panelclass($this, $this->get_display_options(true), $page, $showall);
|
|
|
|
$bc = new block_contents();
|
|
$bc->attributes['id'] = 'mod_quiz_navblock';
|
|
$bc->attributes['role'] = 'navigation';
|
|
$bc->attributes['aria-labelledby'] = 'mod_quiz_navblock_title';
|
|
$bc->title = html_writer::span(get_string('quiznavigation', 'quiz'), '', array('id' => 'mod_quiz_navblock_title'));
|
|
$bc->content = $output->navigation_panel($panel);
|
|
return $bc;
|
|
}
|
|
|
|
/**
|
|
* Return an array of variant URLs to other attempts at this quiz.
|
|
*
|
|
* The $url passed in must contain an attempt parameter.
|
|
*
|
|
* The {@link mod_quiz_links_to_other_attempts} object returned contains an
|
|
* array with keys that are the attempt number, 1, 2, 3.
|
|
* The array values are either a {@link moodle_url} with the attmept parameter
|
|
* updated to point to the attempt id of the other attempt, or null corresponding
|
|
* to the current attempt number.
|
|
*
|
|
* @param moodle_url $url a URL.
|
|
* @return mod_quiz_links_to_other_attempts containing array int => null|moodle_url.
|
|
*/
|
|
public function links_to_other_attempts(moodle_url $url) {
|
|
$attempts = quiz_get_user_attempts($this->get_quiz()->id, $this->attempt->userid, 'all');
|
|
if (count($attempts) <= 1) {
|
|
return false;
|
|
}
|
|
|
|
$links = new mod_quiz_links_to_other_attempts();
|
|
foreach ($attempts as $at) {
|
|
if ($at->id == $this->attempt->id) {
|
|
$links->links[$at->attempt] = null;
|
|
} else {
|
|
$links->links[$at->attempt] = new moodle_url($url, array('attempt' => $at->id));
|
|
}
|
|
}
|
|
return $links;
|
|
}
|
|
|
|
/**
|
|
* Return an array of variant URLs to other redos of the question in a particular slot.
|
|
*
|
|
* The $url passed in must contain a slot parameter.
|
|
*
|
|
* The {@link mod_quiz_links_to_other_attempts} object returned contains an
|
|
* array with keys that are the redo number, 1, 2, 3.
|
|
* The array values are either a {@link moodle_url} with the slot parameter
|
|
* updated to point to the slot that has that redo of this question; or null
|
|
* corresponding to the redo identified by $slot.
|
|
*
|
|
* @param int $slot identifies a question in this attempt.
|
|
* @param moodle_url $baseurl the base URL to modify to generate each link.
|
|
* @return mod_quiz_links_to_other_attempts|null containing array int => null|moodle_url,
|
|
* or null if the question in this slot has not been redone.
|
|
*/
|
|
public function links_to_other_redos($slot, moodle_url $baseurl) {
|
|
$originalslot = $this->get_original_slot($slot);
|
|
|
|
$qas = $this->all_question_attempts_originally_in_slot($originalslot);
|
|
if (count($qas) <= 1) {
|
|
return null;
|
|
}
|
|
|
|
$links = new mod_quiz_links_to_other_attempts();
|
|
$index = 1;
|
|
foreach ($qas as $qa) {
|
|
if ($qa->get_slot() == $slot) {
|
|
$links->links[$index] = null;
|
|
} else {
|
|
$url = new moodle_url($baseurl, array('slot' => $qa->get_slot()));
|
|
$links->links[$index] = new action_link($url, $index,
|
|
new popup_action('click', $url, 'reviewquestion',
|
|
array('width' => 450, 'height' => 650)),
|
|
array('title' => get_string('reviewresponse', 'question')));
|
|
}
|
|
$index++;
|
|
}
|
|
return $links;
|
|
}
|
|
|
|
// Methods for processing ==================================================
|
|
|
|
/**
|
|
* Check this attempt, to see if there are any state transitions that should
|
|
* happen automatically. This function will update the attempt checkstatetime.
|
|
* @param int $timestamp the timestamp that should be stored as the modifed
|
|
* @param bool $studentisonline is the student currently interacting with Moodle?
|
|
*/
|
|
public function handle_if_time_expired($timestamp, $studentisonline) {
|
|
global $DB;
|
|
|
|
$timeclose = $this->get_access_manager($timestamp)->get_end_time($this->attempt);
|
|
|
|
if ($timeclose === false || $this->is_preview()) {
|
|
$this->update_timecheckstate(null);
|
|
return; // No time limit
|
|
}
|
|
if ($timestamp < $timeclose) {
|
|
$this->update_timecheckstate($timeclose);
|
|
return; // Time has not yet expired.
|
|
}
|
|
|
|
// If the attempt is already overdue, look to see if it should be abandoned ...
|
|
if ($this->attempt->state == self::OVERDUE) {
|
|
$timeoverdue = $timestamp - $timeclose;
|
|
$graceperiod = $this->quizobj->get_quiz()->graceperiod;
|
|
if ($timeoverdue >= $graceperiod) {
|
|
$this->process_abandon($timestamp, $studentisonline);
|
|
} else {
|
|
// Overdue time has not yet expired
|
|
$this->update_timecheckstate($timeclose + $graceperiod);
|
|
}
|
|
return; // ... and we are done.
|
|
}
|
|
|
|
if ($this->attempt->state != self::IN_PROGRESS) {
|
|
$this->update_timecheckstate(null);
|
|
return; // Attempt is already in a final state.
|
|
}
|
|
|
|
// Otherwise, we were in quiz_attempt::IN_PROGRESS, and time has now expired.
|
|
// Transition to the appropriate state.
|
|
switch ($this->quizobj->get_quiz()->overduehandling) {
|
|
case 'autosubmit':
|
|
$this->process_finish($timestamp, false);
|
|
return;
|
|
|
|
case 'graceperiod':
|
|
$this->process_going_overdue($timestamp, $studentisonline);
|
|
return;
|
|
|
|
case 'autoabandon':
|
|
$this->process_abandon($timestamp, $studentisonline);
|
|
return;
|
|
}
|
|
|
|
// This is an overdue attempt with no overdue handling defined, so just abandon.
|
|
$this->process_abandon($timestamp, $studentisonline);
|
|
return;
|
|
}
|
|
|
|
/**
|
|
* Process all the actions that were submitted as part of the current request.
|
|
*
|
|
* @param int $timestamp the timestamp that should be stored as the modifed
|
|
* time in the database for these actions. If null, will use the current time.
|
|
* @param bool $becomingoverdue
|
|
* @param array|null $simulatedresponses If not null, then we are testing, and this is an array of simulated data.
|
|
* There are two formats supported here, for historical reasons. The newer approach is to pass an array created by
|
|
* {@link core_question_generator::get_simulated_post_data_for_questions_in_usage()}.
|
|
* the second is to pass an array slot no => contains arrays representing student
|
|
* responses which will be passed to {@link question_definition::prepare_simulated_post_data()}.
|
|
* This second method will probably get deprecated one day.
|
|
*/
|
|
public function process_submitted_actions($timestamp, $becomingoverdue = false, $simulatedresponses = null) {
|
|
global $DB;
|
|
|
|
$transaction = $DB->start_delegated_transaction();
|
|
|
|
if ($simulatedresponses !== null) {
|
|
if (is_int(key($simulatedresponses))) {
|
|
// Legacy approach. Should be removed one day.
|
|
$simulatedpostdata = $this->quba->prepare_simulated_post_data($simulatedresponses);
|
|
} else {
|
|
$simulatedpostdata = $simulatedresponses;
|
|
}
|
|
} else {
|
|
$simulatedpostdata = null;
|
|
}
|
|
|
|
$this->quba->process_all_actions($timestamp, $simulatedpostdata);
|
|
question_engine::save_questions_usage_by_activity($this->quba);
|
|
|
|
$this->attempt->timemodified = $timestamp;
|
|
if ($this->attempt->state == self::FINISHED) {
|
|
$this->attempt->sumgrades = $this->quba->get_total_mark();
|
|
}
|
|
if ($becomingoverdue) {
|
|
$this->process_going_overdue($timestamp, true);
|
|
} else {
|
|
$DB->update_record('quiz_attempts', $this->attempt);
|
|
}
|
|
|
|
if (!$this->is_preview() && $this->attempt->state == self::FINISHED) {
|
|
quiz_save_best_grade($this->get_quiz(), $this->get_userid());
|
|
}
|
|
|
|
$transaction->allow_commit();
|
|
}
|
|
|
|
/**
|
|
* Replace a question in an attempt with a new attempt at the same qestion.
|
|
* @param int $slot the questoin to restart.
|
|
* @param int $timestamp the timestamp to record for this action.
|
|
*/
|
|
public function process_redo_question($slot, $timestamp) {
|
|
global $DB;
|
|
|
|
if (!$this->can_question_be_redone_now($slot)) {
|
|
throw new coding_exception('Attempt to restart the question in slot ' . $slot .
|
|
' when it is not in a state to be restarted.');
|
|
}
|
|
|
|
$qubaids = new \mod_quiz\question\qubaids_for_users_attempts(
|
|
$this->get_quizid(), $this->get_userid());
|
|
|
|
$transaction = $DB->start_delegated_transaction();
|
|
|
|
// Choose the replacement question.
|
|
$questiondata = $DB->get_record('question',
|
|
array('id' => $this->slots[$slot]->questionid));
|
|
if ($questiondata->qtype != 'random') {
|
|
$newqusetionid = $questiondata->id;
|
|
} else {
|
|
$tagids = quiz_retrieve_slot_tag_ids($this->slots[$slot]->id);
|
|
|
|
$randomloader = new \core_question\bank\random_question_loader($qubaids, array());
|
|
$newqusetionid = $randomloader->get_next_question_id($questiondata->category,
|
|
(bool) $questiondata->questiontext, $tagids);
|
|
if ($newqusetionid === null) {
|
|
throw new moodle_exception('notenoughrandomquestions', 'quiz',
|
|
$this->quizobj->view_url(), $questiondata);
|
|
}
|
|
}
|
|
|
|
// Add the question to the usage. It is important we do this before we choose a variant.
|
|
$newquestion = question_bank::load_question($newqusetionid);
|
|
$newslot = $this->quba->add_question_in_place_of_other($slot, $newquestion);
|
|
|
|
// Choose the variant.
|
|
if ($newquestion->get_num_variants() == 1) {
|
|
$variant = 1;
|
|
} else {
|
|
$variantstrategy = new core_question\engine\variants\least_used_strategy(
|
|
$this->quba, $qubaids);
|
|
$variant = $variantstrategy->choose_variant($newquestion->get_num_variants(),
|
|
$newquestion->get_variants_selection_seed());
|
|
}
|
|
|
|
// Start the question.
|
|
$this->quba->start_question($slot, $variant);
|
|
$this->quba->set_max_mark($newslot, 0);
|
|
$this->quba->set_question_attempt_metadata($newslot, 'originalslot', $slot);
|
|
question_engine::save_questions_usage_by_activity($this->quba);
|
|
|
|
$transaction->allow_commit();
|
|
}
|
|
|
|
/**
|
|
* Process all the autosaved data that was part of the current request.
|
|
*
|
|
* @param int $timestamp the timestamp that should be stored as the modifed
|
|
* time in the database for these actions. If null, will use the current time.
|
|
*/
|
|
public function process_auto_save($timestamp) {
|
|
global $DB;
|
|
|
|
$transaction = $DB->start_delegated_transaction();
|
|
|
|
$this->quba->process_all_autosaves($timestamp);
|
|
question_engine::save_questions_usage_by_activity($this->quba);
|
|
|
|
$transaction->allow_commit();
|
|
}
|
|
|
|
/**
|
|
* Update the flagged state for all question_attempts in this usage, if their
|
|
* flagged state was changed in the request.
|
|
*/
|
|
public function save_question_flags() {
|
|
global $DB;
|
|
|
|
$transaction = $DB->start_delegated_transaction();
|
|
$this->quba->update_question_flags();
|
|
question_engine::save_questions_usage_by_activity($this->quba);
|
|
$transaction->allow_commit();
|
|
}
|
|
|
|
public function process_finish($timestamp, $processsubmitted) {
|
|
global $DB;
|
|
|
|
$transaction = $DB->start_delegated_transaction();
|
|
|
|
if ($processsubmitted) {
|
|
$this->quba->process_all_actions($timestamp);
|
|
}
|
|
$this->quba->finish_all_questions($timestamp);
|
|
|
|
question_engine::save_questions_usage_by_activity($this->quba);
|
|
|
|
$this->attempt->timemodified = $timestamp;
|
|
$this->attempt->timefinish = $timestamp;
|
|
$this->attempt->sumgrades = $this->quba->get_total_mark();
|
|
$this->attempt->state = self::FINISHED;
|
|
$this->attempt->timecheckstate = null;
|
|
$DB->update_record('quiz_attempts', $this->attempt);
|
|
|
|
if (!$this->is_preview()) {
|
|
quiz_save_best_grade($this->get_quiz(), $this->attempt->userid);
|
|
|
|
// Trigger event.
|
|
$this->fire_state_transition_event('\mod_quiz\event\attempt_submitted', $timestamp);
|
|
|
|
// Tell any access rules that care that the attempt is over.
|
|
$this->get_access_manager($timestamp)->current_attempt_finished();
|
|
}
|
|
|
|
$transaction->allow_commit();
|
|
}
|
|
|
|
/**
|
|
* Update this attempt timecheckstate if necessary.
|
|
* @param int|null the timecheckstate
|
|
*/
|
|
public function update_timecheckstate($time) {
|
|
global $DB;
|
|
if ($this->attempt->timecheckstate !== $time) {
|
|
$this->attempt->timecheckstate = $time;
|
|
$DB->set_field('quiz_attempts', 'timecheckstate', $time, array('id' => $this->attempt->id));
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Mark this attempt as now overdue.
|
|
* @param int $timestamp the time to deem as now.
|
|
* @param bool $studentisonline is the student currently interacting with Moodle?
|
|
*/
|
|
public function process_going_overdue($timestamp, $studentisonline) {
|
|
global $DB;
|
|
|
|
$transaction = $DB->start_delegated_transaction();
|
|
$this->attempt->timemodified = $timestamp;
|
|
$this->attempt->state = self::OVERDUE;
|
|
// If we knew the attempt close time, we could compute when the graceperiod ends.
|
|
// Instead we'll just fix it up through cron.
|
|
$this->attempt->timecheckstate = $timestamp;
|
|
$DB->update_record('quiz_attempts', $this->attempt);
|
|
|
|
$this->fire_state_transition_event('\mod_quiz\event\attempt_becameoverdue', $timestamp);
|
|
|
|
$transaction->allow_commit();
|
|
|
|
quiz_send_overdue_message($this);
|
|
}
|
|
|
|
/**
|
|
* Mark this attempt as abandoned.
|
|
* @param int $timestamp the time to deem as now.
|
|
* @param bool $studentisonline is the student currently interacting with Moodle?
|
|
*/
|
|
public function process_abandon($timestamp, $studentisonline) {
|
|
global $DB;
|
|
|
|
$transaction = $DB->start_delegated_transaction();
|
|
$this->attempt->timemodified = $timestamp;
|
|
$this->attempt->state = self::ABANDONED;
|
|
$this->attempt->timecheckstate = null;
|
|
$DB->update_record('quiz_attempts', $this->attempt);
|
|
|
|
$this->fire_state_transition_event('\mod_quiz\event\attempt_abandoned', $timestamp);
|
|
|
|
$transaction->allow_commit();
|
|
}
|
|
|
|
/**
|
|
* Fire a state transition event.
|
|
* the same event information.
|
|
* @param string $eventclass the event class name.
|
|
* @param int $timestamp the timestamp to include in the event.
|
|
* @return void
|
|
*/
|
|
protected function fire_state_transition_event($eventclass, $timestamp) {
|
|
global $USER;
|
|
$quizrecord = $this->get_quiz();
|
|
$params = array(
|
|
'context' => $this->get_quizobj()->get_context(),
|
|
'courseid' => $this->get_courseid(),
|
|
'objectid' => $this->attempt->id,
|
|
'relateduserid' => $this->attempt->userid,
|
|
'other' => array(
|
|
'submitterid' => CLI_SCRIPT ? null : $USER->id,
|
|
'quizid' => $quizrecord->id
|
|
)
|
|
);
|
|
|
|
$event = $eventclass::create($params);
|
|
$event->add_record_snapshot('quiz', $this->get_quiz());
|
|
$event->add_record_snapshot('quiz_attempts', $this->get_attempt());
|
|
$event->trigger();
|
|
}
|
|
|
|
// Private methods =========================================================
|
|
|
|
/**
|
|
* Get a URL for a particular question on a particular page of the quiz.
|
|
* Used by {@link attempt_url()} and {@link review_url()}.
|
|
*
|
|
* @param string $script. Used in the URL like /mod/quiz/$script.php
|
|
* @param int $slot identifies the specific question on the page to jump to.
|
|
* 0 to just use the $page parameter.
|
|
* @param int $page -1 to look up the page number from the slot, otherwise
|
|
* the page number to go to.
|
|
* @param bool|null $showall if true, return a URL with showall=1, and not page number.
|
|
* if null, then an intelligent default will be chosen.
|
|
* @param int $thispage the page we are currently on. Links to questions on this
|
|
* page will just be a fragment #q123. -1 to disable this.
|
|
* @return The requested URL.
|
|
*/
|
|
protected function page_and_question_url($script, $slot, $page, $showall, $thispage) {
|
|
|
|
$defaultshowall = $this->get_default_show_all($script);
|
|
if ($showall === null && ($page == 0 || $page == -1)) {
|
|
$showall = $defaultshowall;
|
|
}
|
|
|
|
// Fix up $page.
|
|
if ($page == -1) {
|
|
if ($slot !== null && !$showall) {
|
|
$page = $this->get_question_page($slot);
|
|
} else {
|
|
$page = 0;
|
|
}
|
|
}
|
|
|
|
if ($showall) {
|
|
$page = 0;
|
|
}
|
|
|
|
// Add a fragment to scroll down to the question.
|
|
$fragment = '';
|
|
if ($slot !== null) {
|
|
if ($slot == reset($this->pagelayout[$page])) {
|
|
// First question on page, go to top.
|
|
$fragment = '#';
|
|
} else {
|
|
$fragment = '#q' . $slot;
|
|
}
|
|
}
|
|
|
|
// Work out the correct start to the URL.
|
|
if ($thispage == $page) {
|
|
return new moodle_url($fragment);
|
|
|
|
} else {
|
|
$url = new moodle_url('/mod/quiz/' . $script . '.php' . $fragment,
|
|
array('attempt' => $this->attempt->id, 'cmid' => $this->get_cmid()));
|
|
if ($page == 0 && $showall != $defaultshowall) {
|
|
$url->param('showall', (int) $showall);
|
|
} else if ($page > 0) {
|
|
$url->param('page', $page);
|
|
}
|
|
return $url;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Process responses during an attempt at a quiz.
|
|
*
|
|
* @param int $timenow time when the processing started
|
|
* @param bool $finishattempt whether to finish the attempt or not
|
|
* @param bool $timeup true if form was submitted by timer
|
|
* @param int $thispage current page number
|
|
* @return string the attempt state once the data has been processed
|
|
* @since Moodle 3.1
|
|
* @throws moodle_exception
|
|
*/
|
|
public function process_attempt($timenow, $finishattempt, $timeup, $thispage) {
|
|
global $DB;
|
|
|
|
$transaction = $DB->start_delegated_transaction();
|
|
|
|
// If there is only a very small amount of time left, there is no point trying
|
|
// to show the student another page of the quiz. Just finish now.
|
|
$graceperiodmin = null;
|
|
$accessmanager = $this->get_access_manager($timenow);
|
|
$timeclose = $accessmanager->get_end_time($this->get_attempt());
|
|
|
|
// Don't enforce timeclose for previews.
|
|
if ($this->is_preview()) {
|
|
$timeclose = false;
|
|
}
|
|
$toolate = false;
|
|
if ($timeclose !== false && $timenow > $timeclose - QUIZ_MIN_TIME_TO_CONTINUE) {
|
|
$timeup = true;
|
|
$graceperiodmin = get_config('quiz', 'graceperiodmin');
|
|
if ($timenow > $timeclose + $graceperiodmin) {
|
|
$toolate = true;
|
|
}
|
|
}
|
|
|
|
// If time is running out, trigger the appropriate action.
|
|
$becomingoverdue = false;
|
|
$becomingabandoned = false;
|
|
if ($timeup) {
|
|
if ($this->get_quiz()->overduehandling == 'graceperiod') {
|
|
if (is_null($graceperiodmin)) {
|
|
$graceperiodmin = get_config('quiz', 'graceperiodmin');
|
|
}
|
|
if ($timenow > $timeclose + $this->get_quiz()->graceperiod + $graceperiodmin) {
|
|
// Grace period has run out.
|
|
$finishattempt = true;
|
|
$becomingabandoned = true;
|
|
} else {
|
|
$becomingoverdue = true;
|
|
}
|
|
} else {
|
|
$finishattempt = true;
|
|
}
|
|
}
|
|
|
|
// Don't log - we will end with a redirect to a page that is logged.
|
|
|
|
if (!$finishattempt) {
|
|
// Just process the responses for this page and go to the next page.
|
|
if (!$toolate) {
|
|
try {
|
|
$this->process_submitted_actions($timenow, $becomingoverdue);
|
|
|
|
} catch (question_out_of_sequence_exception $e) {
|
|
throw new moodle_exception('submissionoutofsequencefriendlymessage', 'question',
|
|
$this->attempt_url(null, $thispage));
|
|
|
|
} catch (Exception $e) {
|
|
// This sucks, if we display our own custom error message, there is no way
|
|
// to display the original stack trace.
|
|
$debuginfo = '';
|
|
if (!empty($e->debuginfo)) {
|
|
$debuginfo = $e->debuginfo;
|
|
}
|
|
throw new moodle_exception('errorprocessingresponses', 'question',
|
|
$this->attempt_url(null, $thispage), $e->getMessage(), $debuginfo);
|
|
}
|
|
|
|
if (!$becomingoverdue) {
|
|
foreach ($this->get_slots() as $slot) {
|
|
if (optional_param('redoslot' . $slot, false, PARAM_BOOL)) {
|
|
$this->process_redo_question($slot, $timenow);
|
|
}
|
|
}
|
|
}
|
|
|
|
} else {
|
|
// The student is too late.
|
|
$this->process_going_overdue($timenow, true);
|
|
}
|
|
|
|
$transaction->allow_commit();
|
|
|
|
return $becomingoverdue ? self::OVERDUE : self::IN_PROGRESS;
|
|
}
|
|
|
|
// Update the quiz attempt record.
|
|
try {
|
|
if ($becomingabandoned) {
|
|
$this->process_abandon($timenow, true);
|
|
} else {
|
|
$this->process_finish($timenow, !$toolate);
|
|
}
|
|
|
|
} catch (question_out_of_sequence_exception $e) {
|
|
throw new moodle_exception('submissionoutofsequencefriendlymessage', 'question',
|
|
$this->attempt_url(null, $thispage));
|
|
|
|
} catch (Exception $e) {
|
|
// This sucks, if we display our own custom error message, there is no way
|
|
// to display the original stack trace.
|
|
$debuginfo = '';
|
|
if (!empty($e->debuginfo)) {
|
|
$debuginfo = $e->debuginfo;
|
|
}
|
|
throw new moodle_exception('errorprocessingresponses', 'question',
|
|
$this->attempt_url(null, $thispage), $e->getMessage(), $debuginfo);
|
|
}
|
|
|
|
// Send the user to the review page.
|
|
$transaction->allow_commit();
|
|
|
|
return $becomingabandoned ? self::ABANDONED : self::FINISHED;
|
|
}
|
|
|
|
/**
|
|
* Check a page access to see if is an out of sequence access.
|
|
*
|
|
* @param int $page page number
|
|
* @return boolean false is is an out of sequence access, true otherwise.
|
|
* @since Moodle 3.1
|
|
*/
|
|
public function check_page_access($page) {
|
|
global $DB;
|
|
|
|
if ($this->get_currentpage() != $page) {
|
|
if ($this->get_navigation_method() == QUIZ_NAVMETHOD_SEQ && $this->get_currentpage() > $page) {
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Update attempt page.
|
|
*
|
|
* @param int $page page number
|
|
* @return boolean true if everything was ok, false otherwise (out of sequence access).
|
|
* @since Moodle 3.1
|
|
*/
|
|
public function set_currentpage($page) {
|
|
global $DB;
|
|
|
|
if ($this->check_page_access($page)) {
|
|
$DB->set_field('quiz_attempts', 'currentpage', $page, array('id' => $this->get_attemptid()));
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Trigger the attempt_viewed event.
|
|
*
|
|
* @since Moodle 3.1
|
|
*/
|
|
public function fire_attempt_viewed_event() {
|
|
$params = array(
|
|
'objectid' => $this->get_attemptid(),
|
|
'relateduserid' => $this->get_userid(),
|
|
'courseid' => $this->get_courseid(),
|
|
'context' => context_module::instance($this->get_cmid()),
|
|
'other' => array(
|
|
'quizid' => $this->get_quizid()
|
|
)
|
|
);
|
|
$event = \mod_quiz\event\attempt_viewed::create($params);
|
|
$event->add_record_snapshot('quiz_attempts', $this->get_attempt());
|
|
$event->trigger();
|
|
}
|
|
|
|
/**
|
|
* Trigger the attempt_summary_viewed event.
|
|
*
|
|
* @since Moodle 3.1
|
|
*/
|
|
public function fire_attempt_summary_viewed_event() {
|
|
|
|
$params = array(
|
|
'objectid' => $this->get_attemptid(),
|
|
'relateduserid' => $this->get_userid(),
|
|
'courseid' => $this->get_courseid(),
|
|
'context' => context_module::instance($this->get_cmid()),
|
|
'other' => array(
|
|
'quizid' => $this->get_quizid()
|
|
)
|
|
);
|
|
$event = \mod_quiz\event\attempt_summary_viewed::create($params);
|
|
$event->add_record_snapshot('quiz_attempts', $this->get_attempt());
|
|
$event->trigger();
|
|
}
|
|
|
|
/**
|
|
* Trigger the attempt_reviewed event.
|
|
*
|
|
* @since Moodle 3.1
|
|
*/
|
|
public function fire_attempt_reviewed_event() {
|
|
|
|
$params = array(
|
|
'objectid' => $this->get_attemptid(),
|
|
'relateduserid' => $this->get_userid(),
|
|
'courseid' => $this->get_courseid(),
|
|
'context' => context_module::instance($this->get_cmid()),
|
|
'other' => array(
|
|
'quizid' => $this->get_quizid()
|
|
)
|
|
);
|
|
$event = \mod_quiz\event\attempt_reviewed::create($params);
|
|
$event->add_record_snapshot('quiz_attempts', $this->get_attempt());
|
|
$event->trigger();
|
|
}
|
|
|
|
/**
|
|
* Update the timemodifiedoffline attempt field.
|
|
* This function should be used only when web services are being used.
|
|
*
|
|
* @param int $time time stamp
|
|
* @return boolean false if the field is not updated because web services aren't being used.
|
|
* @since Moodle 3.2
|
|
*/
|
|
public function set_offline_modified_time($time) {
|
|
global $DB;
|
|
|
|
// Update the timemodifiedoffline field only if web services are being used.
|
|
if (WS_SERVER) {
|
|
$this->attempt->timemodifiedoffline = $time;
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
}
|
|
|
|
|
|
/**
|
|
* Represents a heading in the navigation panel.
|
|
*
|
|
* @copyright 2015 The Open University
|
|
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
|
|
* @since Moodle 2.9
|
|
*/
|
|
class quiz_nav_section_heading implements renderable {
|
|
/** @var string the heading text. */
|
|
public $heading;
|
|
|
|
/**
|
|
* Constructor.
|
|
* @param string $heading the heading text
|
|
*/
|
|
public function __construct($heading) {
|
|
$this->heading = $heading;
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* Represents a single link in the navigation panel.
|
|
*
|
|
* @copyright 2011 The Open University
|
|
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
|
|
* @since Moodle 2.1
|
|
*/
|
|
class quiz_nav_question_button implements renderable {
|
|
/** @var string id="..." to add to the HTML for this button. */
|
|
public $id;
|
|
/** @var string number to display in this button. Either the question number of 'i'. */
|
|
public $number;
|
|
/** @var string class to add to the class="" attribute to represnt the question state. */
|
|
public $stateclass;
|
|
/** @var string Textual description of the question state, e.g. to use as a tool tip. */
|
|
public $statestring;
|
|
/** @var int the page number this question is on. */
|
|
public $page;
|
|
/** @var bool true if this question is on the current page. */
|
|
public $currentpage;
|
|
/** @var bool true if this question has been flagged. */
|
|
public $flagged;
|
|
/** @var moodle_url the link this button goes to, or null if there should not be a link. */
|
|
public $url;
|
|
}
|
|
|
|
|
|
/**
|
|
* Represents the navigation panel, and builds a {@link block_contents} to allow
|
|
* it to be output.
|
|
*
|
|
* @copyright 2008 Tim Hunt
|
|
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
|
|
* @since Moodle 2.0
|
|
*/
|
|
abstract class quiz_nav_panel_base {
|
|
/** @var quiz_attempt */
|
|
protected $attemptobj;
|
|
/** @var question_display_options */
|
|
protected $options;
|
|
/** @var integer */
|
|
protected $page;
|
|
/** @var boolean */
|
|
protected $showall;
|
|
|
|
public function __construct(quiz_attempt $attemptobj,
|
|
question_display_options $options, $page, $showall) {
|
|
$this->attemptobj = $attemptobj;
|
|
$this->options = $options;
|
|
$this->page = $page;
|
|
$this->showall = $showall;
|
|
}
|
|
|
|
/**
|
|
* Get the buttons and section headings to go in the quiz navigation block.
|
|
* @return renderable[] the buttons, possibly interleaved with section headings.
|
|
*/
|
|
public function get_question_buttons() {
|
|
$buttons = array();
|
|
foreach ($this->attemptobj->get_slots() as $slot) {
|
|
if ($heading = $this->attemptobj->get_heading_before_slot($slot)) {
|
|
$buttons[] = new quiz_nav_section_heading(format_string($heading));
|
|
}
|
|
|
|
$qa = $this->attemptobj->get_question_attempt($slot);
|
|
$showcorrectness = $this->options->correctness && $qa->has_marks();
|
|
|
|
$button = new quiz_nav_question_button();
|
|
$button->id = 'quiznavbutton' . $slot;
|
|
$button->number = $this->attemptobj->get_question_number($slot);
|
|
$button->stateclass = $qa->get_state_class($showcorrectness);
|
|
$button->navmethod = $this->attemptobj->get_navigation_method();
|
|
if (!$showcorrectness && $button->stateclass == 'notanswered') {
|
|
$button->stateclass = 'complete';
|
|
}
|
|
$button->statestring = $this->get_state_string($qa, $showcorrectness);
|
|
$button->page = $this->attemptobj->get_question_page($slot);
|
|
$button->currentpage = $this->showall || $button->page == $this->page;
|
|
$button->flagged = $qa->is_flagged();
|
|
$button->url = $this->get_question_url($slot);
|
|
if ($this->attemptobj->is_blocked_by_previous_question($slot)) {
|
|
$button->url = null;
|
|
$button->stateclass = 'blocked';
|
|
$button->statestring = get_string('questiondependsonprevious', 'quiz');
|
|
}
|
|
$buttons[] = $button;
|
|
}
|
|
|
|
return $buttons;
|
|
}
|
|
|
|
protected function get_state_string(question_attempt $qa, $showcorrectness) {
|
|
if ($qa->get_question()->length > 0) {
|
|
return $qa->get_state_string($showcorrectness);
|
|
}
|
|
|
|
// Special case handling for 'information' items.
|
|
if ($qa->get_state() == question_state::$todo) {
|
|
return get_string('notyetviewed', 'quiz');
|
|
} else {
|
|
return get_string('viewed', 'quiz');
|
|
}
|
|
}
|
|
|
|
public function render_before_button_bits(mod_quiz_renderer $output) {
|
|
return '';
|
|
}
|
|
|
|
abstract public function render_end_bits(mod_quiz_renderer $output);
|
|
|
|
protected function render_restart_preview_link($output) {
|
|
if (!$this->attemptobj->is_own_preview()) {
|
|
return '';
|
|
}
|
|
return $output->restart_preview_button(new moodle_url(
|
|
$this->attemptobj->start_attempt_url(), array('forcenew' => true)));
|
|
}
|
|
|
|
protected abstract function get_question_url($slot);
|
|
|
|
public function user_picture() {
|
|
global $DB;
|
|
if ($this->attemptobj->get_quiz()->showuserpicture == QUIZ_SHOWIMAGE_NONE) {
|
|
return null;
|
|
}
|
|
$user = $DB->get_record('user', array('id' => $this->attemptobj->get_userid()));
|
|
$userpicture = new user_picture($user);
|
|
$userpicture->courseid = $this->attemptobj->get_courseid();
|
|
if ($this->attemptobj->get_quiz()->showuserpicture == QUIZ_SHOWIMAGE_LARGE) {
|
|
$userpicture->size = true;
|
|
}
|
|
return $userpicture;
|
|
}
|
|
|
|
/**
|
|
* Return 'allquestionsononepage' as CSS class name when $showall is set,
|
|
* otherwise, return 'multipages' as CSS class name.
|
|
* @return string, CSS class name
|
|
*/
|
|
public function get_button_container_class() {
|
|
// Quiz navigation is set on 'Show all questions on one page'.
|
|
if ($this->showall) {
|
|
return 'allquestionsononepage';
|
|
}
|
|
// Quiz navigation is set on 'Show one page at a time'.
|
|
return 'multipages';
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* Specialisation of {@link quiz_nav_panel_base} for the attempt quiz page.
|
|
*
|
|
* @copyright 2008 Tim Hunt
|
|
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
|
|
* @since Moodle 2.0
|
|
*/
|
|
class quiz_attempt_nav_panel extends quiz_nav_panel_base {
|
|
public function get_question_url($slot) {
|
|
if ($this->attemptobj->can_navigate_to($slot)) {
|
|
return $this->attemptobj->attempt_url($slot, -1, $this->page);
|
|
} else {
|
|
return null;
|
|
}
|
|
}
|
|
|
|
public function render_before_button_bits(mod_quiz_renderer $output) {
|
|
return html_writer::tag('div', get_string('navnojswarning', 'quiz'),
|
|
array('id' => 'quiznojswarning'));
|
|
}
|
|
|
|
public function render_end_bits(mod_quiz_renderer $output) {
|
|
return html_writer::link($this->attemptobj->summary_url(),
|
|
get_string('endtest', 'quiz'), array('class' => 'endtestlink')) .
|
|
$output->countdown_timer($this->attemptobj, time()) .
|
|
$this->render_restart_preview_link($output);
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* Specialisation of {@link quiz_nav_panel_base} for the review quiz page.
|
|
*
|
|
* @copyright 2008 Tim Hunt
|
|
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
|
|
* @since Moodle 2.0
|
|
*/
|
|
class quiz_review_nav_panel extends quiz_nav_panel_base {
|
|
public function get_question_url($slot) {
|
|
return $this->attemptobj->review_url($slot, -1, $this->showall, $this->page);
|
|
}
|
|
|
|
public function render_end_bits(mod_quiz_renderer $output) {
|
|
$html = '';
|
|
if ($this->attemptobj->get_num_pages() > 1) {
|
|
if ($this->showall) {
|
|
$html .= html_writer::link($this->attemptobj->review_url(null, 0, false),
|
|
get_string('showeachpage', 'quiz'));
|
|
} else {
|
|
$html .= html_writer::link($this->attemptobj->review_url(null, 0, true),
|
|
get_string('showall', 'quiz'));
|
|
}
|
|
}
|
|
$html .= $output->finish_review_link($this->attemptobj);
|
|
$html .= $this->render_restart_preview_link($output);
|
|
return $html;
|
|
}
|
|
}
|
|
|