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573 lines
29 KiB
573 lines
29 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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* Core grades external functions
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*
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* @package core_grades
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* @copyright 2012 Andrew Davis
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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* @since Moodle 2.7
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*/
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defined('MOODLE_INTERNAL') || die;
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require_once("$CFG->libdir/externallib.php");
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require_once("$CFG->libdir/gradelib.php");
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require_once("$CFG->dirroot/grade/querylib.php");
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/**
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* core grades functions
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*/
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class core_grades_external extends external_api {
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/**
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* Returns description of method parameters
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*
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* @return external_function_parameters
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* @since Moodle 2.7
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* @deprecated Moodle 3.2 MDL-51373 - Please do not call this function any more.
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* @see gradereport_user_external::get_grade_items for a similar function
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*/
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public static function get_grades_parameters() {
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return new external_function_parameters(
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array(
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'courseid' => new external_value(PARAM_INT, 'id of course'),
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'component' => new external_value(
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PARAM_COMPONENT, 'A component, for example mod_forum or mod_quiz', VALUE_DEFAULT, ''),
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'activityid' => new external_value(PARAM_INT, 'The activity ID', VALUE_DEFAULT, null),
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'userids' => new external_multiple_structure(
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new external_value(PARAM_INT, 'user ID'),
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'An array of user IDs, leave empty to just retrieve grade item information', VALUE_DEFAULT, array()
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)
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)
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);
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}
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/**
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* Returns student course total grade and grades for activities.
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* This function does not return category or manual items.
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* This function is suitable for managers or teachers not students.
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*
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* @param int $courseid Course id
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* @param string $component Component name
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* @param int $activityid Activity id
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* @param array $userids Array of user ids
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* @return array Array of grades
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* @since Moodle 2.7
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* @deprecated Moodle 3.2 MDL-51373 - Please do not call this function any more.
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* @see gradereport_user_external::get_grade_items for a similar function
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*/
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public static function get_grades($courseid, $component = null, $activityid = null, $userids = array()) {
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global $CFG, $USER, $DB;
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$params = self::validate_parameters(self::get_grades_parameters(),
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array('courseid' => $courseid, 'component' => $component, 'activityid' => $activityid, 'userids' => $userids));
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$gradesarray = array(
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'items' => array(),
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'outcomes' => array()
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);
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$coursecontext = context_course::instance($params['courseid']);
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try {
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self::validate_context($coursecontext);
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} catch (Exception $e) {
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$exceptionparam = new stdClass();
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$exceptionparam->message = $e->getMessage();
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$exceptionparam->courseid = $params['courseid'];
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throw new moodle_exception('errorcoursecontextnotvalid' , 'webservice', '', $exceptionparam);
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}
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require_capability('moodle/grade:viewhidden', $coursecontext);
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$course = $DB->get_record('course', array('id' => $params['courseid']), '*', MUST_EXIST);
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$access = false;
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if (has_capability('moodle/grade:viewall', $coursecontext)) {
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// Can view all user's grades in this course.
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$access = true;
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} else if ($course->showgrades && count($params['userids']) == 1) {
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// Course showgrades == students/parents can access grades.
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if ($params['userids'][0] == $USER->id and has_capability('moodle/grade:view', $coursecontext)) {
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// Student can view their own grades in this course.
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$access = true;
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} else if (has_capability('moodle/grade:viewall', context_user::instance($params['userids'][0]))) {
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// User can view the grades of this user. Parent most probably.
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$access = true;
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}
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}
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if (!$access) {
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throw new moodle_exception('nopermissiontoviewgrades', 'error');
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}
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$itemtype = null;
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$itemmodule = null;
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$iteminstance = null;
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if (!empty($params['component'])) {
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list($itemtype, $itemmodule) = normalize_component($params['component']);
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}
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$cm = null;
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if (!empty($itemmodule) && !empty($params['activityid'])) {
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if (!$cm = get_coursemodule_from_id($itemmodule, $params['activityid'])) {
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throw new moodle_exception('invalidcoursemodule');
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}
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$iteminstance = $cm->instance;
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}
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// Load all the module info.
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$modinfo = get_fast_modinfo($params['courseid']);
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$activityinstances = $modinfo->get_instances();
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$gradeparams = array('courseid' => $params['courseid']);
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if (!empty($itemtype)) {
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$gradeparams['itemtype'] = $itemtype;
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}
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if (!empty($itemmodule)) {
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$gradeparams['itemmodule'] = $itemmodule;
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}
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if (!empty($iteminstance)) {
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$gradeparams['iteminstance'] = $iteminstance;
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}
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if ($activitygrades = grade_item::fetch_all($gradeparams)) {
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$canviewhidden = has_capability('moodle/grade:viewhidden', context_course::instance($params['courseid']));
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foreach ($activitygrades as $activitygrade) {
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if ($activitygrade->itemtype != 'course' and $activitygrade->itemtype != 'mod') {
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// This function currently only supports course and mod grade items. Manual and category not supported.
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continue;
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}
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$context = $coursecontext;
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if ($activitygrade->itemtype == 'course') {
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$item = grade_get_course_grades($course->id, $params['userids']);
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$item->itemnumber = 0;
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$grades = new stdClass;
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$grades->items = array($item);
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$grades->outcomes = array();
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} else {
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$cm = $activityinstances[$activitygrade->itemmodule][$activitygrade->iteminstance];
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$instance = $cm->instance;
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$context = context_module::instance($cm->id, IGNORE_MISSING);
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$grades = grade_get_grades($params['courseid'], $activitygrade->itemtype,
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$activitygrade->itemmodule, $instance, $params['userids']);
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}
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// Convert from objects to arrays so all web service clients are supported.
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// While we're doing that we also remove grades the current user can't see due to hiding.
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foreach ($grades->items as $gradeitem) {
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// Switch the stdClass instance for a grade item instance so we can call is_hidden() and use the ID.
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$gradeiteminstance = self::get_grade_item(
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$course->id, $activitygrade->itemtype, $activitygrade->itemmodule, $activitygrade->iteminstance, 0);
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if (!$canviewhidden && $gradeiteminstance->is_hidden()) {
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continue;
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}
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// Format mixed bool/integer parameters.
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$gradeitem->hidden = (empty($gradeitem->hidden)) ? 0 : $gradeitem->hidden;
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$gradeitem->locked = (empty($gradeitem->locked)) ? 0 : $gradeitem->locked;
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$gradeitemarray = (array)$gradeitem;
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$gradeitemarray['grades'] = array();
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if (!empty($gradeitem->grades)) {
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foreach ($gradeitem->grades as $studentid => $studentgrade) {
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if (!$canviewhidden) {
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// Need to load the grade_grade object to check visibility.
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$gradegradeinstance = grade_grade::fetch(
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array(
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'userid' => $studentid,
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'itemid' => $gradeiteminstance->id
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)
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);
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// The grade grade may be legitimately missing if the student has no grade.
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if (!empty($gradegradeinstance) && $gradegradeinstance->is_hidden()) {
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continue;
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}
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}
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// Format mixed bool/integer parameters.
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$studentgrade->hidden = (empty($studentgrade->hidden)) ? 0 : $studentgrade->hidden;
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$studentgrade->locked = (empty($studentgrade->locked)) ? 0 : $studentgrade->locked;
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$studentgrade->overridden = (empty($studentgrade->overridden)) ? 0 : $studentgrade->overridden;
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if ($gradeiteminstance->itemtype != 'course' and !empty($studentgrade->feedback)) {
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list($studentgrade->feedback, $studentgrade->feedbackformat) =
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external_format_text($studentgrade->feedback, $studentgrade->feedbackformat,
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$context->id, $params['component'], 'feedback', null);
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}
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$gradeitemarray['grades'][$studentid] = (array)$studentgrade;
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// Add the student ID as some WS clients can't access the array key.
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$gradeitemarray['grades'][$studentid]['userid'] = $studentid;
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}
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}
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if ($gradeiteminstance->itemtype == 'course') {
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$gradesarray['items']['course'] = $gradeitemarray;
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$gradesarray['items']['course']['activityid'] = 'course';
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} else {
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$gradesarray['items'][$cm->id] = $gradeitemarray;
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// Add the activity ID as some WS clients can't access the array key.
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$gradesarray['items'][$cm->id]['activityid'] = $cm->id;
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}
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}
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foreach ($grades->outcomes as $outcome) {
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// Format mixed bool/integer parameters.
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$outcome->hidden = (empty($outcome->hidden)) ? 0 : $outcome->hidden;
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$outcome->locked = (empty($outcome->locked)) ? 0 : $outcome->locked;
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$gradesarray['outcomes'][$cm->id] = (array)$outcome;
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$gradesarray['outcomes'][$cm->id]['activityid'] = $cm->id;
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$gradesarray['outcomes'][$cm->id]['grades'] = array();
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if (!empty($outcome->grades)) {
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foreach ($outcome->grades as $studentid => $studentgrade) {
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if (!$canviewhidden) {
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// Need to load the grade_grade object to check visibility.
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$gradeiteminstance = self::get_grade_item($course->id, $activitygrade->itemtype,
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$activitygrade->itemmodule, $activitygrade->iteminstance,
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$activitygrade->itemnumber);
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$gradegradeinstance = grade_grade::fetch(
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array(
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'userid' => $studentid,
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'itemid' => $gradeiteminstance->id
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)
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);
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// The grade grade may be legitimately missing if the student has no grade.
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if (!empty($gradegradeinstance ) && $gradegradeinstance->is_hidden()) {
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continue;
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}
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}
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// Format mixed bool/integer parameters.
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$studentgrade->hidden = (empty($studentgrade->hidden)) ? 0 : $studentgrade->hidden;
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$studentgrade->locked = (empty($studentgrade->locked)) ? 0 : $studentgrade->locked;
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if (!empty($studentgrade->feedback)) {
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list($studentgrade->feedback, $studentgrade->feedbackformat) =
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external_format_text($studentgrade->feedback, $studentgrade->feedbackformat,
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$context->id, $params['component'], 'feedback', null);
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}
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$gradesarray['outcomes'][$cm->id]['grades'][$studentid] = (array)$studentgrade;
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// Add the student ID into the grade structure as some WS clients can't access the key.
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$gradesarray['outcomes'][$cm->id]['grades'][$studentid]['userid'] = $studentid;
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}
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}
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}
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}
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}
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return $gradesarray;
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}
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/**
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* Get a grade item
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* @param int $courseid Course id
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* @param string $itemtype Item type
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* @param string $itemmodule Item module
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* @param int $iteminstance Item instance
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* @param int $itemnumber Item number
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* @return grade_item A grade_item instance
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* @deprecated Moodle 3.2 MDL-51373 - Please do not call this function any more.
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* @see gradereport_user_external::get_grade_items for a similar function
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*/
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private static function get_grade_item($courseid, $itemtype, $itemmodule = null, $iteminstance = null, $itemnumber = null) {
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$gradeiteminstance = null;
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if ($itemtype == 'course') {
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$gradeiteminstance = grade_item::fetch(array('courseid' => $courseid, 'itemtype' => $itemtype));
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} else {
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$gradeiteminstance = grade_item::fetch(
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array('courseid' => $courseid, 'itemtype' => $itemtype,
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'itemmodule' => $itemmodule, 'iteminstance' => $iteminstance, 'itemnumber' => $itemnumber));
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}
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return $gradeiteminstance;
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}
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/**
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* Returns description of method result value
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*
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* @return external_description
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* @since Moodle 2.7
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* @deprecated Moodle 3.2 MDL-51373 - Please do not call this function any more.
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* @see gradereport_user_external::get_grade_items for a similar function
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*/
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public static function get_grades_returns() {
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return new external_single_structure(
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array(
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'items' => new external_multiple_structure(
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new external_single_structure(
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array(
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'activityid' => new external_value(
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PARAM_ALPHANUM, 'The ID of the activity or "course" for the course grade item'),
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'itemnumber' => new external_value(PARAM_INT, 'Will be 0 unless the module has multiple grades'),
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'scaleid' => new external_value(PARAM_INT, 'The ID of the custom scale or 0'),
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'name' => new external_value(PARAM_RAW, 'The module name'),
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'grademin' => new external_value(PARAM_FLOAT, 'Minimum grade'),
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'grademax' => new external_value(PARAM_FLOAT, 'Maximum grade'),
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'gradepass' => new external_value(PARAM_FLOAT, 'The passing grade threshold'),
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'locked' => new external_value(PARAM_INT, '0 means not locked, > 1 is a date to lock until'),
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'hidden' => new external_value(PARAM_INT, '0 means not hidden, > 1 is a date to hide until'),
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'grades' => new external_multiple_structure(
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new external_single_structure(
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array(
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'userid' => new external_value(
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PARAM_INT, 'Student ID'),
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'grade' => new external_value(
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PARAM_FLOAT, 'Student grade'),
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'locked' => new external_value(
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PARAM_INT, '0 means not locked, > 1 is a date to lock until'),
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'hidden' => new external_value(
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PARAM_INT, '0 means not hidden, 1 hidden, > 1 is a date to hide until'),
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'overridden' => new external_value(
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PARAM_INT, '0 means not overridden, > 1 means overridden'),
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'feedback' => new external_value(
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PARAM_RAW, 'Feedback from the grader'),
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'feedbackformat' => new external_value(
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PARAM_INT, 'The format of the feedback'),
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'usermodified' => new external_value(
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PARAM_INT, 'The ID of the last user to modify this student grade'),
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'datesubmitted' => new external_value(
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PARAM_INT, 'A timestamp indicating when the student submitted the activity'),
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'dategraded' => new external_value(
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PARAM_INT, 'A timestamp indicating when the assignment was grades'),
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'str_grade' => new external_value(
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PARAM_RAW, 'A string representation of the grade'),
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'str_long_grade' => new external_value(
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PARAM_RAW, 'A nicely formatted string representation of the grade'),
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'str_feedback' => new external_value(
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PARAM_RAW, 'A formatted string representation of the feedback from the grader'),
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)
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)
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),
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)
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)
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),
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'outcomes' => new external_multiple_structure(
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new external_single_structure(
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array(
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'activityid' => new external_value(
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PARAM_ALPHANUM, 'The ID of the activity or "course" for the course grade item'),
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'itemnumber' => new external_value(PARAM_INT, 'Will be 0 unless the module has multiple grades'),
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'scaleid' => new external_value(PARAM_INT, 'The ID of the custom scale or 0'),
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'name' => new external_value(PARAM_RAW, 'The module name'),
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'locked' => new external_value(PARAM_INT, '0 means not locked, > 1 is a date to lock until'),
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'hidden' => new external_value(PARAM_INT, '0 means not hidden, > 1 is a date to hide until'),
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'grades' => new external_multiple_structure(
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new external_single_structure(
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array(
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'userid' => new external_value(
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PARAM_INT, 'Student ID'),
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'grade' => new external_value(
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PARAM_FLOAT, 'Student grade'),
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'locked' => new external_value(
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PARAM_INT, '0 means not locked, > 1 is a date to lock until'),
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'hidden' => new external_value(
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PARAM_INT, '0 means not hidden, 1 hidden, > 1 is a date to hide until'),
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'feedback' => new external_value(
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PARAM_RAW, 'Feedback from the grader'),
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'feedbackformat' => new external_value(
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PARAM_INT, 'The feedback format'),
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'usermodified' => new external_value(
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PARAM_INT, 'The ID of the last user to modify this student grade'),
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'str_grade' => new external_value(
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PARAM_RAW, 'A string representation of the grade'),
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'str_feedback' => new external_value(
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PARAM_RAW, 'A formatted string representation of the feedback from the grader'),
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)
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)
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),
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)
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), 'An array of outcomes associated with the grade items', VALUE_OPTIONAL
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)
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)
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);
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}
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/**
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* Marking the method as deprecated.
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*
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* @return bool
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*/
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public static function get_grades_is_deprecated() {
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return true;
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}
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/**
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* Returns description of method parameters
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*
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* @return external_function_parameters
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* @since Moodle 2.7
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*/
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public static function update_grades_parameters() {
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return new external_function_parameters(
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array(
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'source' => new external_value(PARAM_TEXT, 'The source of the grade update'),
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'courseid' => new external_value(PARAM_INT, 'id of course'),
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'component' => new external_value(PARAM_COMPONENT, 'A component, for example mod_forum or mod_quiz'),
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'activityid' => new external_value(PARAM_INT, 'The activity ID'),
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'itemnumber' => new external_value(
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PARAM_INT, 'grade item ID number for modules that have multiple grades. Typically this is 0.'),
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'grades' => new external_multiple_structure(
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new external_single_structure(
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array(
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'studentid' => new external_value(PARAM_INT, 'Student ID'),
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'grade' => new external_value(PARAM_FLOAT, 'Student grade'),
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'str_feedback' => new external_value(
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PARAM_TEXT, 'A string representation of the feedback from the grader', VALUE_OPTIONAL),
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)
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), 'Any student grades to alter', VALUE_DEFAULT, array()),
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'itemdetails' => new external_single_structure(
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array(
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'itemname' => new external_value(
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PARAM_ALPHANUMEXT, 'The grade item name', VALUE_OPTIONAL),
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'idnumber' => new external_value(
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PARAM_INT, 'Arbitrary ID provided by the module responsible for the grade item', VALUE_OPTIONAL),
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'gradetype' => new external_value(
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PARAM_INT, 'The type of grade (0 = none, 1 = value, 2 = scale, 3 = text)', VALUE_OPTIONAL),
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'grademax' => new external_value(
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PARAM_FLOAT, 'Maximum grade allowed', VALUE_OPTIONAL),
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'grademin' => new external_value(
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|
PARAM_FLOAT, 'Minimum grade allowed', VALUE_OPTIONAL),
|
|
'scaleid' => new external_value(
|
|
PARAM_INT, 'The ID of the custom scale being is used', VALUE_OPTIONAL),
|
|
'multfactor' => new external_value(
|
|
PARAM_FLOAT, 'Multiply all grades by this number', VALUE_OPTIONAL),
|
|
'plusfactor' => new external_value(
|
|
PARAM_FLOAT, 'Add this to all grades', VALUE_OPTIONAL),
|
|
'deleted' => new external_value(
|
|
PARAM_BOOL, 'True if the grade item should be deleted', VALUE_OPTIONAL),
|
|
'hidden' => new external_value(
|
|
PARAM_BOOL, 'True if the grade item is hidden', VALUE_OPTIONAL),
|
|
), 'Any grade item settings to alter', VALUE_DEFAULT, array()
|
|
)
|
|
)
|
|
);
|
|
}
|
|
|
|
/**
|
|
* Update a grade item and, optionally, student grades
|
|
*
|
|
* @param string $source The source of the grade update
|
|
* @param int $courseid The course id
|
|
* @param string $component Component name
|
|
* @param int $activityid The activity id
|
|
* @param int $itemnumber The item number
|
|
* @param array $grades Array of grades
|
|
* @param array $itemdetails Array of item details
|
|
* @return int A status flag
|
|
* @since Moodle 2.7
|
|
*/
|
|
public static function update_grades($source, $courseid, $component, $activityid,
|
|
$itemnumber, $grades = array(), $itemdetails = array()) {
|
|
global $CFG;
|
|
|
|
$params = self::validate_parameters(
|
|
self::update_grades_parameters(),
|
|
array(
|
|
'source' => $source,
|
|
'courseid' => $courseid,
|
|
'component' => $component,
|
|
'activityid' => $activityid,
|
|
'itemnumber' => $itemnumber,
|
|
'grades' => $grades,
|
|
'itemdetails' => $itemdetails
|
|
)
|
|
);
|
|
|
|
list($itemtype, $itemmodule) = normalize_component($params['component']);
|
|
|
|
if (! $cm = get_coursemodule_from_id($itemmodule, $activityid)) {
|
|
throw new moodle_exception('invalidcoursemodule');
|
|
}
|
|
$iteminstance = $cm->instance;
|
|
|
|
$coursecontext = context_course::instance($params['courseid']);
|
|
|
|
try {
|
|
self::validate_context($coursecontext);
|
|
} catch (Exception $e) {
|
|
$exceptionparam = new stdClass();
|
|
$exceptionparam->message = $e->getMessage();
|
|
$exceptionparam->courseid = $params['courseid'];
|
|
throw new moodle_exception('errorcoursecontextnotvalid' , 'webservice', '', $exceptionparam);
|
|
}
|
|
|
|
$hidinggrades = false;
|
|
$editinggradeitem = false;
|
|
$editinggrades = false;
|
|
|
|
$gradestructure = array();
|
|
foreach ($grades as $grade) {
|
|
$editinggrades = true;
|
|
$gradestructure[ $grade['studentid'] ] = array('userid' => $grade['studentid'], 'rawgrade' => $grade['grade']);
|
|
}
|
|
if (!empty($params['itemdetails'])) {
|
|
if (isset($params['itemdetails']['hidden'])) {
|
|
$hidinggrades = true;
|
|
} else {
|
|
$editinggradeitem = true;
|
|
}
|
|
}
|
|
|
|
if ($editinggradeitem && !has_capability('moodle/grade:manage', $coursecontext)) {
|
|
throw new moodle_exception('nopermissiontoviewgrades', 'error', '', null,
|
|
'moodle/grade:manage required to edit grade information');
|
|
}
|
|
if ($hidinggrades && !has_capability('moodle/grade:hide', $coursecontext) &&
|
|
!has_capability('moodle/grade:hide', $coursecontext)) {
|
|
throw new moodle_exception('nopermissiontoviewgrades', 'error', '', null,
|
|
'moodle/grade:hide required to hide grade items');
|
|
}
|
|
if ($editinggrades && !has_capability('moodle/grade:edit', $coursecontext)) {
|
|
throw new moodle_exception('nopermissiontoviewgrades', 'error', '', null,
|
|
'moodle/grade:edit required to edit grades');
|
|
}
|
|
|
|
return grade_update($params['source'], $params['courseid'], $itemtype,
|
|
$itemmodule, $iteminstance, $itemnumber, $gradestructure, $params['itemdetails']);
|
|
}
|
|
|
|
/**
|
|
* Returns description of method result value
|
|
*
|
|
* @return external_description
|
|
* @since Moodle 2.7
|
|
*/
|
|
public static function update_grades_returns() {
|
|
return new external_value(
|
|
PARAM_INT,
|
|
'A value like ' . GRADE_UPDATE_OK . ' => OK, ' . GRADE_UPDATE_FAILED . ' => FAILED
|
|
as defined in lib/grade/constants.php'
|
|
);
|
|
}
|
|
}
|
|
|