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207 lines
9.2 KiB
207 lines
9.2 KiB
2 years ago
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<?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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* Rest endpoint for ajax editing of quiz structure.
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*
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* @package mod_quiz
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* @copyright 1999 Martin Dougiamas http://dougiamas.com
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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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if (!defined('AJAX_SCRIPT')) {
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define('AJAX_SCRIPT', true);
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}
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require_once(__DIR__ . '/../../config.php');
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require_once($CFG->dirroot . '/mod/quiz/locallib.php');
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// Initialise ALL the incoming parameters here, up front.
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$quizid = required_param('quizid', PARAM_INT);
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$class = required_param('class', PARAM_ALPHA);
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$field = optional_param('field', '', PARAM_ALPHA);
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$instanceid = optional_param('instanceId', 0, PARAM_INT);
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$sectionid = optional_param('sectionId', 0, PARAM_INT);
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$previousid = optional_param('previousid', 0, PARAM_INT);
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$value = optional_param('value', 0, PARAM_INT);
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$column = optional_param('column', 0, PARAM_ALPHA);
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$id = optional_param('id', 0, PARAM_INT);
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$summary = optional_param('summary', '', PARAM_RAW);
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$sequence = optional_param('sequence', '', PARAM_SEQUENCE);
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$visible = optional_param('visible', 0, PARAM_INT);
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$pageaction = optional_param('action', '', PARAM_ALPHA); // Used to simulate a DELETE command.
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$maxmark = optional_param('maxmark', '', PARAM_FLOAT);
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$newheading = optional_param('newheading', '', PARAM_TEXT);
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$shuffle = optional_param('newshuffle', 0, PARAM_INT);
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$page = optional_param('page', '', PARAM_INT);
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$ids = optional_param('ids', '', PARAM_SEQUENCE);
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$PAGE->set_url('/mod/quiz/edit-rest.php',
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array('quizid' => $quizid, 'class' => $class));
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require_sesskey();
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$quiz = $DB->get_record('quiz', array('id' => $quizid), '*', MUST_EXIST);
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$cm = get_coursemodule_from_instance('quiz', $quiz->id, $quiz->course);
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$course = $DB->get_record('course', array('id' => $quiz->course), '*', MUST_EXIST);
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require_login($course, false, $cm);
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$quizobj = new quiz($quiz, $cm, $course);
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$structure = $quizobj->get_structure();
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$modcontext = context_module::instance($cm->id);
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echo $OUTPUT->header(); // Send headers.
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// All these AJAX actions should be logically atomic.
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$transaction = $DB->start_delegated_transaction();
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// OK, now let's process the parameters and do stuff
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// MDL-10221 the DELETE method is not allowed on some web servers,
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// so we simulate it with the action URL param.
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$requestmethod = $_SERVER['REQUEST_METHOD'];
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if ($pageaction == 'DELETE') {
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$requestmethod = 'DELETE';
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}
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$result = null;
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switch($requestmethod) {
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case 'POST':
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case 'GET': // For debugging.
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switch ($class) {
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case 'section':
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$table = 'quiz_sections';
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$section = $structure->get_section_by_id($id);
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switch ($field) {
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case 'getsectiontitle':
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require_capability('mod/quiz:manage', $modcontext);
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$result = array('instancesection' => $section->heading);
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break;
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case 'updatesectiontitle':
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require_capability('mod/quiz:manage', $modcontext);
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$structure->set_section_heading($id, $newheading);
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$result = array('instancesection' => format_string($newheading));
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break;
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case 'updateshufflequestions':
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require_capability('mod/quiz:manage', $modcontext);
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$structure->set_section_shuffle($id, $shuffle);
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$result = array('instanceshuffle' => $section->shufflequestions);
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break;
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}
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break;
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case 'resource':
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switch ($field) {
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case 'move':
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require_capability('mod/quiz:manage', $modcontext);
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if (!$previousid) {
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$section = $structure->get_section_by_id($sectionid);
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if ($section->firstslot > 1) {
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$previousid = $structure->get_slot_id_for_slot($section->firstslot - 1);
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$page = $structure->get_page_number_for_slot($section->firstslot);
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}
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}
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$structure->move_slot($id, $previousid, $page);
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quiz_delete_previews($quiz);
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$result = array('visible' => true);
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break;
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case 'getmaxmark':
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require_capability('mod/quiz:manage', $modcontext);
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$slot = $DB->get_record('quiz_slots', array('id' => $id), '*', MUST_EXIST);
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$result = array('instancemaxmark' => quiz_format_question_grade($quiz, $slot->maxmark));
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break;
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case 'updatemaxmark':
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require_capability('mod/quiz:manage', $modcontext);
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$slot = $structure->get_slot_by_id($id);
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if ($structure->update_slot_maxmark($slot, $maxmark)) {
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// Grade has really changed.
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quiz_delete_previews($quiz);
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quiz_update_sumgrades($quiz);
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quiz_update_all_attempt_sumgrades($quiz);
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quiz_update_all_final_grades($quiz);
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quiz_update_grades($quiz, 0, true);
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}
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$result = array('instancemaxmark' => quiz_format_question_grade($quiz, $maxmark),
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'newsummarks' => quiz_format_grade($quiz, $quiz->sumgrades));
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break;
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case 'updatepagebreak':
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require_capability('mod/quiz:manage', $modcontext);
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$slots = $structure->update_page_break($id, $value);
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$json = array();
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foreach ($slots as $slot) {
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$json[$slot->slot] = array('id' => $slot->id, 'slot' => $slot->slot,
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'page' => $slot->page);
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}
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$result = array('slots' => $json);
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break;
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case 'deletemultiple':
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require_capability('mod/quiz:manage', $modcontext);
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$ids = explode(',', $ids);
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foreach ($ids as $id) {
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$slot = $DB->get_record('quiz_slots', array('quizid' => $quiz->id, 'id' => $id),
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'*', MUST_EXIST);
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if (quiz_has_question_use($quiz, $slot->slot)) {
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$structure->remove_slot($slot->slot);
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}
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}
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quiz_delete_previews($quiz);
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quiz_update_sumgrades($quiz);
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$result = array('newsummarks' => quiz_format_grade($quiz, $quiz->sumgrades),
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'deleted' => true, 'newnumquestions' => $structure->get_question_count());
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break;
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case 'updatedependency':
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require_capability('mod/quiz:manage', $modcontext);
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$slot = $structure->get_slot_by_id($id);
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$value = (bool) $value;
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$structure->update_question_dependency($slot->id, $value);
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$result = array('requireprevious' => $value);
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break;
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}
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break;
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}
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break;
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case 'DELETE':
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switch ($class) {
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case 'section':
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require_capability('mod/quiz:manage', $modcontext);
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$structure->remove_section_heading($id);
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$result = array('deleted' => true);
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break;
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case 'resource':
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require_capability('mod/quiz:manage', $modcontext);
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if (!$slot = $DB->get_record('quiz_slots', array('quizid' => $quiz->id, 'id' => $id))) {
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throw new moodle_exception('AJAX commands.php: Bad slot ID '.$id);
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}
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$structure->remove_slot($slot->slot);
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quiz_delete_previews($quiz);
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quiz_update_sumgrades($quiz);
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$result = array('newsummarks' => quiz_format_grade($quiz, $quiz->sumgrades),
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'deleted' => true, 'newnumquestions' => $structure->get_question_count());
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break;
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}
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break;
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}
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$transaction->allow_commit();
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echo json_encode($result);
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