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5c2ef08fa3
The completion cache is currently not marked as simpledata. On the course page it is frequently retrieved hundreds of times which results in many calls to the slow unserialize function. By making a slight change to the data format (using arrays instead of objects) we can mark it as simpledata, which will avoid using unserialize.
1321 lines
46 KiB
PHP
1321 lines
46 KiB
PHP
<?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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* Contains classes, functions and constants used during the tracking
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* of activity completion for users.
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*
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* Completion top-level options (admin setting enablecompletion)
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*
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* @package core_completion
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* @category completion
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* @copyright 1999 onwards Martin Dougiamas {@link http://moodle.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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defined('MOODLE_INTERNAL') || die();
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/**
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* Include the required completion libraries
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*/
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require_once $CFG->dirroot.'/completion/completion_aggregation.php';
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require_once $CFG->dirroot.'/completion/criteria/completion_criteria.php';
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require_once $CFG->dirroot.'/completion/completion_completion.php';
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require_once $CFG->dirroot.'/completion/completion_criteria_completion.php';
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/**
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* The completion system is enabled in this site/course
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*/
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define('COMPLETION_ENABLED', 1);
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/**
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* The completion system is not enabled in this site/course
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*/
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define('COMPLETION_DISABLED', 0);
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/**
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* Completion tracking is disabled for this activity
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* This is a completion tracking option per-activity (course_modules/completion)
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*/
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define('COMPLETION_TRACKING_NONE', 0);
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/**
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* Manual completion tracking (user ticks box) is enabled for this activity
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* This is a completion tracking option per-activity (course_modules/completion)
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*/
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define('COMPLETION_TRACKING_MANUAL', 1);
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/**
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* Automatic completion tracking (system ticks box) is enabled for this activity
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* This is a completion tracking option per-activity (course_modules/completion)
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*/
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define('COMPLETION_TRACKING_AUTOMATIC', 2);
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/**
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* The user has not completed this activity.
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* This is a completion state value (course_modules_completion/completionstate)
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*/
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define('COMPLETION_INCOMPLETE', 0);
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/**
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* The user has completed this activity. It is not specified whether they have
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* passed or failed it.
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* This is a completion state value (course_modules_completion/completionstate)
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*/
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define('COMPLETION_COMPLETE', 1);
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/**
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* The user has completed this activity with a grade above the pass mark.
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* This is a completion state value (course_modules_completion/completionstate)
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*/
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define('COMPLETION_COMPLETE_PASS', 2);
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/**
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* The user has completed this activity but their grade is less than the pass mark
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* This is a completion state value (course_modules_completion/completionstate)
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*/
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define('COMPLETION_COMPLETE_FAIL', 3);
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/**
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* The effect of this change to completion status is unknown.
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* A completion effect changes (used only in update_state)
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*/
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define('COMPLETION_UNKNOWN', -1);
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/**
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* The user's grade has changed, so their new state might be
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* COMPLETION_COMPLETE_PASS or COMPLETION_COMPLETE_FAIL.
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* A completion effect changes (used only in update_state)
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*/
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define('COMPLETION_GRADECHANGE', -2);
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/**
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* User must view this activity.
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* Whether view is required to create an activity (course_modules/completionview)
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*/
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define('COMPLETION_VIEW_REQUIRED', 1);
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/**
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* User does not need to view this activity
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* Whether view is required to create an activity (course_modules/completionview)
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*/
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define('COMPLETION_VIEW_NOT_REQUIRED', 0);
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/**
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* User has viewed this activity.
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* Completion viewed state (course_modules_completion/viewed)
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*/
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define('COMPLETION_VIEWED', 1);
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/**
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* User has not viewed this activity.
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* Completion viewed state (course_modules_completion/viewed)
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*/
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define('COMPLETION_NOT_VIEWED', 0);
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/**
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* Completion details should be ORed together and you should return false if
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* none apply.
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*/
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define('COMPLETION_OR', false);
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/**
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* Completion details should be ANDed together and you should return true if
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* none apply
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*/
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define('COMPLETION_AND', true);
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/**
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* Course completion criteria aggregation method.
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*/
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define('COMPLETION_AGGREGATION_ALL', 1);
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/**
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* Course completion criteria aggregation method.
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*/
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define('COMPLETION_AGGREGATION_ANY', 2);
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/**
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* Utility function for checking if the logged in user can view
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* another's completion data for a particular course
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*
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* @access public
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* @param int $userid Completion data's owner
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* @param mixed $course Course object or Course ID (optional)
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* @return boolean
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*/
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function completion_can_view_data($userid, $course = null) {
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global $USER;
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if (!isloggedin()) {
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return false;
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}
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if (!is_object($course)) {
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$cid = $course;
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$course = new stdClass();
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$course->id = $cid;
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}
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// Check if this is the site course
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if ($course->id == SITEID) {
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$course = null;
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}
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// Check if completion is enabled
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if ($course) {
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$cinfo = new completion_info($course);
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if (!$cinfo->is_enabled()) {
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return false;
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}
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} else {
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if (!completion_info::is_enabled_for_site()) {
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return false;
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}
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}
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// Is own user's data?
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if ($USER->id == $userid) {
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return true;
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}
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// Check capabilities
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$personalcontext = context_user::instance($userid);
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if (has_capability('moodle/user:viewuseractivitiesreport', $personalcontext)) {
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return true;
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} elseif (has_capability('report/completion:view', $personalcontext)) {
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return true;
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}
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if ($course->id) {
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$coursecontext = context_course::instance($course->id);
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} else {
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$coursecontext = context_system::instance();
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}
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if (has_capability('report/completion:view', $coursecontext)) {
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return true;
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}
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return false;
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}
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/**
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* Class represents completion information for a course.
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*
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* Does not contain any data, so you can safely construct it multiple times
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* without causing any problems.
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*
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* @package core
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* @category completion
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* @copyright 2008 Sam Marshall
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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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class completion_info {
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/* @var stdClass Course object passed during construction */
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private $course;
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/* @var int Course id */
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public $course_id;
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/* @var array Completion criteria {@link completion_info::get_criteria()} */
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private $criteria;
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/**
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* Return array of aggregation methods
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* @return array
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*/
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public static function get_aggregation_methods() {
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return array(
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COMPLETION_AGGREGATION_ALL => get_string('all'),
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COMPLETION_AGGREGATION_ANY => get_string('any', 'completion'),
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);
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}
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/**
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* Constructs with course details.
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*
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* When instantiating a new completion info object you must provide a course
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* object with at least id, and enablecompletion properties. Property
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* cacherev is needed if you check completion of the current user since
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* it is used for cache validation.
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*
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* @param stdClass $course Moodle course object.
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*/
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public function __construct($course) {
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$this->course = $course;
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$this->course_id = $course->id;
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}
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/**
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* Determines whether completion is enabled across entire site.
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*
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* @return bool COMPLETION_ENABLED (true) if completion is enabled for the site,
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* COMPLETION_DISABLED (false) if it's complete
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*/
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public static function is_enabled_for_site() {
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global $CFG;
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return !empty($CFG->enablecompletion);
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}
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/**
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* Checks whether completion is enabled in a particular course and possibly
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* activity.
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*
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* @param stdClass|cm_info $cm Course-module object. If not specified, returns the course
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* completion enable state.
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* @return mixed COMPLETION_ENABLED or COMPLETION_DISABLED (==0) in the case of
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* site and course; COMPLETION_TRACKING_MANUAL, _AUTOMATIC or _NONE (==0)
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* for a course-module.
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*/
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public function is_enabled($cm = null) {
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global $CFG, $DB;
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// First check global completion
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if (!isset($CFG->enablecompletion) || $CFG->enablecompletion == COMPLETION_DISABLED) {
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return COMPLETION_DISABLED;
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}
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// Load data if we do not have enough
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if (!isset($this->course->enablecompletion)) {
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$this->course = get_course($this->course_id);
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}
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// Check course completion
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if ($this->course->enablecompletion == COMPLETION_DISABLED) {
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return COMPLETION_DISABLED;
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}
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// If there was no $cm and we got this far, then it's enabled
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if (!$cm) {
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return COMPLETION_ENABLED;
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}
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// Return course-module completion value
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return $cm->completion;
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}
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/**
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* Displays the 'Your progress' help icon, if completion tracking is enabled.
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* Just prints the result of display_help_icon().
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*
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* @deprecated since Moodle 2.0 - Use display_help_icon instead.
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*/
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public function print_help_icon() {
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print $this->display_help_icon();
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}
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/**
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* Returns the 'Your progress' help icon, if completion tracking is enabled.
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*
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* @return string HTML code for help icon, or blank if not needed
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*/
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public function display_help_icon() {
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global $PAGE, $OUTPUT;
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$result = '';
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if ($this->is_enabled() && !$PAGE->user_is_editing() && isloggedin() && !isguestuser()) {
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$result .= html_writer::tag('div', get_string('yourprogress','completion') .
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$OUTPUT->help_icon('completionicons', 'completion'), array('id' => 'completionprogressid',
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'class' => 'completionprogress'));
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}
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return $result;
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}
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/**
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* Get a course completion for a user
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*
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* @param int $user_id User id
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* @param int $criteriatype Specific criteria type to return
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* @return bool|completion_criteria_completion returns false on fail
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*/
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public function get_completion($user_id, $criteriatype) {
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$completions = $this->get_completions($user_id, $criteriatype);
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if (empty($completions)) {
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return false;
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} elseif (count($completions) > 1) {
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print_error('multipleselfcompletioncriteria', 'completion');
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}
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return $completions[0];
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}
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/**
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* Get all course criteria's completion objects for a user
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*
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* @param int $user_id User id
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* @param int $criteriatype Specific criteria type to return (optional)
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* @return array
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*/
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public function get_completions($user_id, $criteriatype = null) {
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$criterion = $this->get_criteria($criteriatype);
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$completions = array();
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foreach ($criterion as $criteria) {
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$params = array(
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'course' => $this->course_id,
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'userid' => $user_id,
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'criteriaid' => $criteria->id
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);
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$completion = new completion_criteria_completion($params);
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$completion->attach_criteria($criteria);
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$completions[] = $completion;
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}
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return $completions;
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}
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/**
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* Get completion object for a user and a criteria
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*
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* @param int $user_id User id
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* @param completion_criteria $criteria Criteria object
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* @return completion_criteria_completion
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*/
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public function get_user_completion($user_id, $criteria) {
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$params = array(
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'course' => $this->course_id,
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'userid' => $user_id,
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'criteriaid' => $criteria->id,
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);
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$completion = new completion_criteria_completion($params);
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return $completion;
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}
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/**
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* Check if course has completion criteria set
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*
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* @return bool Returns true if there are criteria
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*/
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public function has_criteria() {
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$criteria = $this->get_criteria();
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return (bool) count($criteria);
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}
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/**
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* Get course completion criteria
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*
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* @param int $criteriatype Specific criteria type to return (optional)
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*/
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public function get_criteria($criteriatype = null) {
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// Fill cache if empty
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if (!is_array($this->criteria)) {
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global $DB;
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$params = array(
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'course' => $this->course->id
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);
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// Load criteria from database
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$records = (array)$DB->get_records('course_completion_criteria', $params);
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// Build array of criteria objects
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$this->criteria = array();
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foreach ($records as $record) {
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$this->criteria[$record->id] = completion_criteria::factory((array)$record);
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}
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}
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// If after all criteria
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if ($criteriatype === null) {
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return $this->criteria;
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}
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// If we are only after a specific criteria type
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$criteria = array();
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foreach ($this->criteria as $criterion) {
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if ($criterion->criteriatype != $criteriatype) {
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continue;
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}
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$criteria[$criterion->id] = $criterion;
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}
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return $criteria;
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}
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/**
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* Get aggregation method
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*
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* @param int $criteriatype If none supplied, get overall aggregation method (optional)
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* @return int One of COMPLETION_AGGREGATION_ALL or COMPLETION_AGGREGATION_ANY
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*/
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public function get_aggregation_method($criteriatype = null) {
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$params = array(
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'course' => $this->course_id,
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'criteriatype' => $criteriatype
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);
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$aggregation = new completion_aggregation($params);
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if (!$aggregation->id) {
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$aggregation->method = COMPLETION_AGGREGATION_ALL;
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}
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return $aggregation->method;
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}
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/**
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* @deprecated since Moodle 2.8 MDL-46290.
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*/
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public function get_incomplete_criteria() {
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throw new coding_exception('completion_info->get_incomplete_criteria() is removed.');
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}
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/**
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* Clear old course completion criteria
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*/
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public function clear_criteria() {
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global $DB;
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$DB->delete_records('course_completion_criteria', array('course' => $this->course_id));
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$DB->delete_records('course_completion_aggr_methd', array('course' => $this->course_id));
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$this->delete_course_completion_data();
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}
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/**
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* Has the supplied user completed this course
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*
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* @param int $user_id User's id
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* @return boolean
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*/
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public function is_course_complete($user_id) {
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$params = array(
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'userid' => $user_id,
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'course' => $this->course_id
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);
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$ccompletion = new completion_completion($params);
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return $ccompletion->is_complete();
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}
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/**
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* Updates (if necessary) the completion state of activity $cm for the given
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* user.
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*
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* For manual completion, this function is called when completion is toggled
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* with $possibleresult set to the target state.
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*
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* For automatic completion, this function should be called every time a module
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* does something which might influence a user's completion state. For example,
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* if a forum provides options for marking itself 'completed' once a user makes
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* N posts, this function should be called every time a user makes a new post.
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* [After the post has been saved to the database]. When calling, you do not
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* need to pass in the new completion state. Instead this function carries out
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* completion calculation by checking grades and viewed state itself, and
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* calling the involved module via modulename_get_completion_state() to check
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* module-specific conditions.
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*
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* @param stdClass|cm_info $cm Course-module
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* @param int $possibleresult Expected completion result. If the event that
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* has just occurred (e.g. add post) can only result in making the activity
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* complete when it wasn't before, use COMPLETION_COMPLETE. If the event that
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* has just occurred (e.g. delete post) can only result in making the activity
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* not complete when it was previously complete, use COMPLETION_INCOMPLETE.
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* Otherwise use COMPLETION_UNKNOWN. Setting this value to something other than
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* COMPLETION_UNKNOWN significantly improves performance because it will abandon
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* processing early if the user's completion state already matches the expected
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* result. For manual events, COMPLETION_COMPLETE or COMPLETION_INCOMPLETE
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* must be used; these directly set the specified state.
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* @param int $userid User ID to be updated. Default 0 = current user
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* @return void
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*/
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public function update_state($cm, $possibleresult=COMPLETION_UNKNOWN, $userid=0) {
|
|
global $USER;
|
|
|
|
// Do nothing if completion is not enabled for that activity
|
|
if (!$this->is_enabled($cm)) {
|
|
return;
|
|
}
|
|
|
|
// Get current value of completion state and do nothing if it's same as
|
|
// the possible result of this change. If the change is to COMPLETE and the
|
|
// current value is one of the COMPLETE_xx subtypes, ignore that as well
|
|
$current = $this->get_data($cm, false, $userid);
|
|
if ($possibleresult == $current->completionstate ||
|
|
($possibleresult == COMPLETION_COMPLETE &&
|
|
($current->completionstate == COMPLETION_COMPLETE_PASS ||
|
|
$current->completionstate == COMPLETION_COMPLETE_FAIL))) {
|
|
return;
|
|
}
|
|
|
|
if ($cm->completion == COMPLETION_TRACKING_MANUAL) {
|
|
// For manual tracking we set the result directly
|
|
switch($possibleresult) {
|
|
case COMPLETION_COMPLETE:
|
|
case COMPLETION_INCOMPLETE:
|
|
$newstate = $possibleresult;
|
|
break;
|
|
default:
|
|
$this->internal_systemerror("Unexpected manual completion state for {$cm->id}: $possibleresult");
|
|
}
|
|
|
|
} else {
|
|
// Automatic tracking; get new state
|
|
$newstate = $this->internal_get_state($cm, $userid, $current);
|
|
}
|
|
|
|
// If changed, update
|
|
if ($newstate != $current->completionstate) {
|
|
$current->completionstate = $newstate;
|
|
$current->timemodified = time();
|
|
$this->internal_set_data($cm, $current);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Calculates the completion state for an activity and user.
|
|
*
|
|
* Internal function. Not private, so we can unit-test it.
|
|
*
|
|
* @param stdClass|cm_info $cm Activity
|
|
* @param int $userid ID of user
|
|
* @param stdClass $current Previous completion information from database
|
|
* @return mixed
|
|
*/
|
|
public function internal_get_state($cm, $userid, $current) {
|
|
global $USER, $DB, $CFG;
|
|
|
|
// Get user ID
|
|
if (!$userid) {
|
|
$userid = $USER->id;
|
|
}
|
|
|
|
// Check viewed
|
|
if ($cm->completionview == COMPLETION_VIEW_REQUIRED &&
|
|
$current->viewed == COMPLETION_NOT_VIEWED) {
|
|
|
|
return COMPLETION_INCOMPLETE;
|
|
}
|
|
|
|
// Modname hopefully is provided in $cm but just in case it isn't, let's grab it
|
|
if (!isset($cm->modname)) {
|
|
$cm->modname = $DB->get_field('modules', 'name', array('id'=>$cm->module));
|
|
}
|
|
|
|
$newstate = COMPLETION_COMPLETE;
|
|
|
|
// Check grade
|
|
if (!is_null($cm->completiongradeitemnumber)) {
|
|
require_once($CFG->libdir.'/gradelib.php');
|
|
$item = grade_item::fetch(array('courseid'=>$cm->course, 'itemtype'=>'mod',
|
|
'itemmodule'=>$cm->modname, 'iteminstance'=>$cm->instance,
|
|
'itemnumber'=>$cm->completiongradeitemnumber));
|
|
if ($item) {
|
|
// Fetch 'grades' (will be one or none)
|
|
$grades = grade_grade::fetch_users_grades($item, array($userid), false);
|
|
if (empty($grades)) {
|
|
// No grade for user
|
|
return COMPLETION_INCOMPLETE;
|
|
}
|
|
if (count($grades) > 1) {
|
|
$this->internal_systemerror("Unexpected result: multiple grades for
|
|
item '{$item->id}', user '{$userid}'");
|
|
}
|
|
$newstate = self::internal_get_grade_state($item, reset($grades));
|
|
if ($newstate == COMPLETION_INCOMPLETE) {
|
|
return COMPLETION_INCOMPLETE;
|
|
}
|
|
|
|
} else {
|
|
$this->internal_systemerror("Cannot find grade item for '{$cm->modname}'
|
|
cm '{$cm->id}' matching number '{$cm->completiongradeitemnumber}'");
|
|
}
|
|
}
|
|
|
|
if (plugin_supports('mod', $cm->modname, FEATURE_COMPLETION_HAS_RULES)) {
|
|
$function = $cm->modname.'_get_completion_state';
|
|
if (!function_exists($function)) {
|
|
$this->internal_systemerror("Module {$cm->modname} claims to support
|
|
FEATURE_COMPLETION_HAS_RULES but does not have required
|
|
{$cm->modname}_get_completion_state function");
|
|
}
|
|
if (!$function($this->course, $cm, $userid, COMPLETION_AND)) {
|
|
return COMPLETION_INCOMPLETE;
|
|
}
|
|
}
|
|
|
|
return $newstate;
|
|
|
|
}
|
|
|
|
/**
|
|
* Marks a module as viewed.
|
|
*
|
|
* Should be called whenever a module is 'viewed' (it is up to the module how to
|
|
* determine that). Has no effect if viewing is not set as a completion condition.
|
|
*
|
|
* Note that this function must be called before you print the page header because
|
|
* it is possible that the navigation block may depend on it. If you call it after
|
|
* printing the header, it shows a developer debug warning.
|
|
*
|
|
* @param stdClass|cm_info $cm Activity
|
|
* @param int $userid User ID or 0 (default) for current user
|
|
* @return void
|
|
*/
|
|
public function set_module_viewed($cm, $userid=0) {
|
|
global $PAGE;
|
|
if ($PAGE->headerprinted) {
|
|
debugging('set_module_viewed must be called before header is printed',
|
|
DEBUG_DEVELOPER);
|
|
}
|
|
|
|
// Don't do anything if view condition is not turned on
|
|
if ($cm->completionview == COMPLETION_VIEW_NOT_REQUIRED || !$this->is_enabled($cm)) {
|
|
return;
|
|
}
|
|
|
|
// Get current completion state
|
|
$data = $this->get_data($cm, false, $userid);
|
|
|
|
// If we already viewed it, don't do anything
|
|
if ($data->viewed == COMPLETION_VIEWED) {
|
|
return;
|
|
}
|
|
|
|
// OK, change state, save it, and update completion
|
|
$data->viewed = COMPLETION_VIEWED;
|
|
$this->internal_set_data($cm, $data);
|
|
$this->update_state($cm, COMPLETION_COMPLETE, $userid);
|
|
}
|
|
|
|
/**
|
|
* Determines how much completion data exists for an activity. This is used when
|
|
* deciding whether completion information should be 'locked' in the module
|
|
* editing form.
|
|
*
|
|
* @param cm_info $cm Activity
|
|
* @return int The number of users who have completion data stored for this
|
|
* activity, 0 if none
|
|
*/
|
|
public function count_user_data($cm) {
|
|
global $DB;
|
|
|
|
return $DB->get_field_sql("
|
|
SELECT
|
|
COUNT(1)
|
|
FROM
|
|
{course_modules_completion}
|
|
WHERE
|
|
coursemoduleid=? AND completionstate<>0", array($cm->id));
|
|
}
|
|
|
|
/**
|
|
* Determines how much course completion data exists for a course. This is used when
|
|
* deciding whether completion information should be 'locked' in the completion
|
|
* settings form and activity completion settings.
|
|
*
|
|
* @param int $user_id Optionally only get course completion data for a single user
|
|
* @return int The number of users who have completion data stored for this
|
|
* course, 0 if none
|
|
*/
|
|
public function count_course_user_data($user_id = null) {
|
|
global $DB;
|
|
|
|
$sql = '
|
|
SELECT
|
|
COUNT(1)
|
|
FROM
|
|
{course_completion_crit_compl}
|
|
WHERE
|
|
course = ?
|
|
';
|
|
|
|
$params = array($this->course_id);
|
|
|
|
// Limit data to a single user if an ID is supplied
|
|
if ($user_id) {
|
|
$sql .= ' AND userid = ?';
|
|
$params[] = $user_id;
|
|
}
|
|
|
|
return $DB->get_field_sql($sql, $params);
|
|
}
|
|
|
|
/**
|
|
* Check if this course's completion criteria should be locked
|
|
*
|
|
* @return boolean
|
|
*/
|
|
public function is_course_locked() {
|
|
return (bool) $this->count_course_user_data();
|
|
}
|
|
|
|
/**
|
|
* Deletes all course completion completion data.
|
|
*
|
|
* Intended to be used when unlocking completion criteria settings.
|
|
*/
|
|
public function delete_course_completion_data() {
|
|
global $DB;
|
|
|
|
$DB->delete_records('course_completions', array('course' => $this->course_id));
|
|
$DB->delete_records('course_completion_crit_compl', array('course' => $this->course_id));
|
|
|
|
// Difficult to find affected users, just purge all completion cache.
|
|
cache::make('core', 'completion')->purge();
|
|
}
|
|
|
|
/**
|
|
* Deletes all activity and course completion data for an entire course
|
|
* (the below delete_all_state function does this for a single activity).
|
|
*
|
|
* Used by course reset page.
|
|
*/
|
|
public function delete_all_completion_data() {
|
|
global $DB;
|
|
|
|
// Delete from database.
|
|
$DB->delete_records_select('course_modules_completion',
|
|
'coursemoduleid IN (SELECT id FROM {course_modules} WHERE course=?)',
|
|
array($this->course_id));
|
|
|
|
// Wipe course completion data too.
|
|
$this->delete_course_completion_data();
|
|
}
|
|
|
|
/**
|
|
* Deletes completion state related to an activity for all users.
|
|
*
|
|
* Intended for use only when the activity itself is deleted.
|
|
*
|
|
* @param stdClass|cm_info $cm Activity
|
|
*/
|
|
public function delete_all_state($cm) {
|
|
global $DB;
|
|
|
|
// Delete from database
|
|
$DB->delete_records('course_modules_completion', array('coursemoduleid'=>$cm->id));
|
|
|
|
// Check if there is an associated course completion criteria
|
|
$criteria = $this->get_criteria(COMPLETION_CRITERIA_TYPE_ACTIVITY);
|
|
$acriteria = false;
|
|
foreach ($criteria as $criterion) {
|
|
if ($criterion->moduleinstance == $cm->id) {
|
|
$acriteria = $criterion;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if ($acriteria) {
|
|
// Delete all criteria completions relating to this activity
|
|
$DB->delete_records('course_completion_crit_compl', array('course' => $this->course_id, 'criteriaid' => $acriteria->id));
|
|
$DB->delete_records('course_completions', array('course' => $this->course_id));
|
|
}
|
|
|
|
// Difficult to find affected users, just purge all completion cache.
|
|
cache::make('core', 'completion')->purge();
|
|
}
|
|
|
|
/**
|
|
* Recalculates completion state related to an activity for all users.
|
|
*
|
|
* Intended for use if completion conditions change. (This should be avoided
|
|
* as it may cause some things to become incomplete when they were previously
|
|
* complete, with the effect - for example - of hiding a later activity that
|
|
* was previously available.)
|
|
*
|
|
* Resetting state of manual tickbox has same result as deleting state for
|
|
* it.
|
|
*
|
|
* @param stcClass|cm_info $cm Activity
|
|
*/
|
|
public function reset_all_state($cm) {
|
|
global $DB;
|
|
|
|
if ($cm->completion == COMPLETION_TRACKING_MANUAL) {
|
|
$this->delete_all_state($cm);
|
|
return;
|
|
}
|
|
// Get current list of users with completion state
|
|
$rs = $DB->get_recordset('course_modules_completion', array('coursemoduleid'=>$cm->id), '', 'userid');
|
|
$keepusers = array();
|
|
foreach ($rs as $rec) {
|
|
$keepusers[] = $rec->userid;
|
|
}
|
|
$rs->close();
|
|
|
|
// Delete all existing state.
|
|
$this->delete_all_state($cm);
|
|
|
|
// Merge this with list of planned users (according to roles)
|
|
$trackedusers = $this->get_tracked_users();
|
|
foreach ($trackedusers as $trackeduser) {
|
|
$keepusers[] = $trackeduser->id;
|
|
}
|
|
$keepusers = array_unique($keepusers);
|
|
|
|
// Recalculate state for each kept user
|
|
foreach ($keepusers as $keepuser) {
|
|
$this->update_state($cm, COMPLETION_UNKNOWN, $keepuser);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Obtains completion data for a particular activity and user (from the
|
|
* completion cache if available, or by SQL query)
|
|
*
|
|
* @param stcClass|cm_info $cm Activity; only required field is ->id
|
|
* @param bool $wholecourse If true (default false) then, when necessary to
|
|
* fill the cache, retrieves information from the entire course not just for
|
|
* this one activity
|
|
* @param int $userid User ID or 0 (default) for current user
|
|
* @param array $modinfo Supply the value here - this is used for unit
|
|
* testing and so that it can be called recursively from within
|
|
* get_fast_modinfo. (Needs only list of all CMs with IDs.)
|
|
* Otherwise the method calls get_fast_modinfo itself.
|
|
* @return object Completion data (record from course_modules_completion)
|
|
*/
|
|
public function get_data($cm, $wholecourse = false, $userid = 0, $modinfo = null) {
|
|
global $USER, $CFG, $DB;
|
|
$completioncache = cache::make('core', 'completion');
|
|
|
|
// Get user ID
|
|
if (!$userid) {
|
|
$userid = $USER->id;
|
|
}
|
|
|
|
// See if requested data is present in cache (use cache for current user only).
|
|
$usecache = $userid == $USER->id;
|
|
$cacheddata = array();
|
|
if ($usecache) {
|
|
$key = $userid . '_' . $this->course->id;
|
|
if (!isset($this->course->cacherev)) {
|
|
$this->course = get_course($this->course_id);
|
|
}
|
|
if ($cacheddata = $completioncache->get($key)) {
|
|
if ($cacheddata['cacherev'] != $this->course->cacherev) {
|
|
// Course structure has been changed since the last caching, forget the cache.
|
|
$cacheddata = array();
|
|
} else if (isset($cacheddata[$cm->id])) {
|
|
return (object)$cacheddata[$cm->id];
|
|
}
|
|
}
|
|
}
|
|
|
|
// Not there, get via SQL
|
|
if ($usecache && $wholecourse) {
|
|
// Get whole course data for cache
|
|
$alldatabycmc = $DB->get_records_sql("
|
|
SELECT
|
|
cmc.*
|
|
FROM
|
|
{course_modules} cm
|
|
INNER JOIN {course_modules_completion} cmc ON cmc.coursemoduleid=cm.id
|
|
WHERE
|
|
cm.course=? AND cmc.userid=?", array($this->course->id, $userid));
|
|
|
|
// Reindex by cm id
|
|
$alldata = array();
|
|
foreach ($alldatabycmc as $data) {
|
|
$alldata[$data->coursemoduleid] = (array)$data;
|
|
}
|
|
|
|
// Get the module info and build up condition info for each one
|
|
if (empty($modinfo)) {
|
|
$modinfo = get_fast_modinfo($this->course, $userid);
|
|
}
|
|
foreach ($modinfo->cms as $othercm) {
|
|
if (isset($alldata[$othercm->id])) {
|
|
$data = $alldata[$othercm->id];
|
|
} else {
|
|
// Row not present counts as 'not complete'
|
|
$data = array();
|
|
$data['id'] = 0;
|
|
$data['coursemoduleid'] = $othercm->id;
|
|
$data['userid'] = $userid;
|
|
$data['completionstate'] = 0;
|
|
$data['viewed'] = 0;
|
|
$data['timemodified'] = 0;
|
|
}
|
|
$cacheddata[$othercm->id] = $data;
|
|
}
|
|
|
|
if (!isset($cacheddata[$cm->id])) {
|
|
$this->internal_systemerror("Unexpected error: course-module {$cm->id} could not be found on course {$this->course->id}");
|
|
}
|
|
|
|
} else {
|
|
// Get single record
|
|
$data = $DB->get_record('course_modules_completion', array('coursemoduleid'=>$cm->id, 'userid'=>$userid));
|
|
if ($data) {
|
|
$data = (array)$data;
|
|
} else {
|
|
// Row not present counts as 'not complete'
|
|
$data = array();
|
|
$data['id'] = 0;
|
|
$data['coursemoduleid'] = $cm->id;
|
|
$data['userid'] = $userid;
|
|
$data['completionstate'] = 0;
|
|
$data['viewed'] = 0;
|
|
$data['timemodified'] = 0;
|
|
}
|
|
|
|
// Put in cache
|
|
$cacheddata[$cm->id] = $data;
|
|
}
|
|
|
|
if ($usecache) {
|
|
$cacheddata['cacherev'] = $this->course->cacherev;
|
|
$completioncache->set($key, $cacheddata);
|
|
}
|
|
return (object)$cacheddata[$cm->id];
|
|
}
|
|
|
|
/**
|
|
* Updates completion data for a particular coursemodule and user (user is
|
|
* determined from $data).
|
|
*
|
|
* (Internal function. Not private, so we can unit-test it.)
|
|
*
|
|
* @param stdClass|cm_info $cm Activity
|
|
* @param stdClass $data Data about completion for that user
|
|
*/
|
|
public function internal_set_data($cm, $data) {
|
|
global $USER, $DB;
|
|
|
|
$transaction = $DB->start_delegated_transaction();
|
|
if (!$data->id) {
|
|
// Check there isn't really a row
|
|
$data->id = $DB->get_field('course_modules_completion', 'id',
|
|
array('coursemoduleid'=>$data->coursemoduleid, 'userid'=>$data->userid));
|
|
}
|
|
if (!$data->id) {
|
|
// Didn't exist before, needs creating
|
|
$data->id = $DB->insert_record('course_modules_completion', $data);
|
|
} else {
|
|
// Has real (nonzero) id meaning that a database row exists, update
|
|
$DB->update_record('course_modules_completion', $data);
|
|
}
|
|
$transaction->allow_commit();
|
|
|
|
$cmcontext = context_module::instance($data->coursemoduleid, MUST_EXIST);
|
|
$coursecontext = $cmcontext->get_parent_context();
|
|
|
|
$completioncache = cache::make('core', 'completion');
|
|
if ($data->userid == $USER->id) {
|
|
// Update module completion in user's cache.
|
|
if (!($cachedata = $completioncache->get($data->userid . '_' . $cm->course))
|
|
|| $cachedata['cacherev'] != $this->course->cacherev) {
|
|
$cachedata = array('cacherev' => $this->course->cacherev);
|
|
}
|
|
$cachedata[$cm->id] = $data;
|
|
$completioncache->set($data->userid . '_' . $cm->course, $cachedata);
|
|
|
|
// reset modinfo for user (no need to call rebuild_course_cache())
|
|
get_fast_modinfo($cm->course, 0, true);
|
|
} else {
|
|
// Remove another user's completion cache for this course.
|
|
$completioncache->delete($data->userid . '_' . $cm->course);
|
|
}
|
|
|
|
// Trigger an event for course module completion changed.
|
|
$event = \core\event\course_module_completion_updated::create(array(
|
|
'objectid' => $data->id,
|
|
'context' => $cmcontext,
|
|
'relateduserid' => $data->userid,
|
|
'other' => array(
|
|
'relateduserid' => $data->userid
|
|
)
|
|
));
|
|
$event->add_record_snapshot('course_modules_completion', $data);
|
|
$event->trigger();
|
|
}
|
|
|
|
/**
|
|
* Return whether or not the course has activities with completion enabled.
|
|
*
|
|
* @return boolean true when there is at least one activity with completion enabled.
|
|
*/
|
|
public function has_activities() {
|
|
$modinfo = get_fast_modinfo($this->course);
|
|
foreach ($modinfo->get_cms() as $cm) {
|
|
if ($cm->completion != COMPLETION_TRACKING_NONE) {
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Obtains a list of activities for which completion is enabled on the
|
|
* course. The list is ordered by the section order of those activities.
|
|
*
|
|
* @return cm_info[] Array from $cmid => $cm of all activities with completion enabled,
|
|
* empty array if none
|
|
*/
|
|
public function get_activities() {
|
|
$modinfo = get_fast_modinfo($this->course);
|
|
$result = array();
|
|
foreach ($modinfo->get_cms() as $cm) {
|
|
if ($cm->completion != COMPLETION_TRACKING_NONE) {
|
|
$result[$cm->id] = $cm;
|
|
}
|
|
}
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* Checks to see if the userid supplied has a tracked role in
|
|
* this course
|
|
*
|
|
* @param int $userid User id
|
|
* @return bool
|
|
*/
|
|
public function is_tracked_user($userid) {
|
|
return is_enrolled(context_course::instance($this->course->id), $userid, 'moodle/course:isincompletionreports', true);
|
|
}
|
|
|
|
/**
|
|
* Returns the number of users whose progress is tracked in this course.
|
|
*
|
|
* Optionally supply a search's where clause, or a group id.
|
|
*
|
|
* @param string $where Where clause sql (use 'u.whatever' for user table fields)
|
|
* @param array $whereparams Where clause params
|
|
* @param int $groupid Group id
|
|
* @return int Number of tracked users
|
|
*/
|
|
public function get_num_tracked_users($where = '', $whereparams = array(), $groupid = 0) {
|
|
global $DB;
|
|
|
|
list($enrolledsql, $enrolledparams) = get_enrolled_sql(
|
|
context_course::instance($this->course->id), 'moodle/course:isincompletionreports', $groupid, true);
|
|
$sql = 'SELECT COUNT(eu.id) FROM (' . $enrolledsql . ') eu JOIN {user} u ON u.id = eu.id';
|
|
if ($where) {
|
|
$sql .= " WHERE $where";
|
|
}
|
|
|
|
$params = array_merge($enrolledparams, $whereparams);
|
|
return $DB->count_records_sql($sql, $params);
|
|
}
|
|
|
|
/**
|
|
* Return array of users whose progress is tracked in this course.
|
|
*
|
|
* Optionally supply a search's where clause, group id, sorting, paging.
|
|
*
|
|
* @param string $where Where clause sql, referring to 'u.' fields (optional)
|
|
* @param array $whereparams Where clause params (optional)
|
|
* @param int $groupid Group ID to restrict to (optional)
|
|
* @param string $sort Order by clause (optional)
|
|
* @param int $limitfrom Result start (optional)
|
|
* @param int $limitnum Result max size (optional)
|
|
* @param context $extracontext If set, includes extra user information fields
|
|
* as appropriate to display for current user in this context
|
|
* @return array Array of user objects with standard user fields
|
|
*/
|
|
public function get_tracked_users($where = '', $whereparams = array(), $groupid = 0,
|
|
$sort = '', $limitfrom = '', $limitnum = '', context $extracontext = null) {
|
|
|
|
global $DB;
|
|
|
|
list($enrolledsql, $params) = get_enrolled_sql(
|
|
context_course::instance($this->course->id),
|
|
'moodle/course:isincompletionreports', $groupid, true);
|
|
|
|
$allusernames = get_all_user_name_fields(true, 'u');
|
|
$sql = 'SELECT u.id, u.idnumber, ' . $allusernames;
|
|
if ($extracontext) {
|
|
$sql .= get_extra_user_fields_sql($extracontext, 'u', '', array('idnumber'));
|
|
}
|
|
$sql .= ' FROM (' . $enrolledsql . ') eu JOIN {user} u ON u.id = eu.id';
|
|
|
|
if ($where) {
|
|
$sql .= " AND $where";
|
|
$params = array_merge($params, $whereparams);
|
|
}
|
|
|
|
if ($sort) {
|
|
$sql .= " ORDER BY $sort";
|
|
}
|
|
|
|
return $DB->get_records_sql($sql, $params, $limitfrom, $limitnum);
|
|
}
|
|
|
|
/**
|
|
* Obtains progress information across a course for all users on that course, or
|
|
* for all users in a specific group. Intended for use when displaying progress.
|
|
*
|
|
* This includes only users who, in course context, have one of the roles for
|
|
* which progress is tracked (the gradebookroles admin option) and are enrolled in course.
|
|
*
|
|
* Users are included (in the first array) even if they do not have
|
|
* completion progress for any course-module.
|
|
*
|
|
* @param bool $sortfirstname If true, sort by first name, otherwise sort by
|
|
* last name
|
|
* @param string $where Where clause sql (optional)
|
|
* @param array $where_params Where clause params (optional)
|
|
* @param int $groupid Group ID or 0 (default)/false for all groups
|
|
* @param int $pagesize Number of users to actually return (optional)
|
|
* @param int $start User to start at if paging (optional)
|
|
* @param context $extracontext If set, includes extra user information fields
|
|
* as appropriate to display for current user in this context
|
|
* @return stdClass with ->total and ->start (same as $start) and ->users;
|
|
* an array of user objects (like mdl_user id, firstname, lastname)
|
|
* containing an additional ->progress array of coursemoduleid => completionstate
|
|
*/
|
|
public function get_progress_all($where = '', $where_params = array(), $groupid = 0,
|
|
$sort = '', $pagesize = '', $start = '', context $extracontext = null) {
|
|
global $CFG, $DB;
|
|
|
|
// Get list of applicable users
|
|
$users = $this->get_tracked_users($where, $where_params, $groupid, $sort,
|
|
$start, $pagesize, $extracontext);
|
|
|
|
// Get progress information for these users in groups of 1, 000 (if needed)
|
|
// to avoid making the SQL IN too long
|
|
$results = array();
|
|
$userids = array();
|
|
foreach ($users as $user) {
|
|
$userids[] = $user->id;
|
|
$results[$user->id] = $user;
|
|
$results[$user->id]->progress = array();
|
|
}
|
|
|
|
for($i=0; $i<count($userids); $i+=1000) {
|
|
$blocksize = count($userids)-$i < 1000 ? count($userids)-$i : 1000;
|
|
|
|
list($insql, $params) = $DB->get_in_or_equal(array_slice($userids, $i, $blocksize));
|
|
array_splice($params, 0, 0, array($this->course->id));
|
|
$rs = $DB->get_recordset_sql("
|
|
SELECT
|
|
cmc.*
|
|
FROM
|
|
{course_modules} cm
|
|
INNER JOIN {course_modules_completion} cmc ON cm.id=cmc.coursemoduleid
|
|
WHERE
|
|
cm.course=? AND cmc.userid $insql", $params);
|
|
foreach ($rs as $progress) {
|
|
$progress = (object)$progress;
|
|
$results[$progress->userid]->progress[$progress->coursemoduleid] = $progress;
|
|
}
|
|
$rs->close();
|
|
}
|
|
|
|
return $results;
|
|
}
|
|
|
|
/**
|
|
* Called by grade code to inform the completion system when a grade has
|
|
* been changed. If the changed grade is used to determine completion for
|
|
* the course-module, then the completion status will be updated.
|
|
*
|
|
* @param stdClass|cm_info $cm Course-module for item that owns grade
|
|
* @param grade_item $item Grade item
|
|
* @param stdClass $grade
|
|
* @param bool $deleted
|
|
*/
|
|
public function inform_grade_changed($cm, $item, $grade, $deleted) {
|
|
// Bail out now if completion is not enabled for course-module, it is enabled
|
|
// but is set to manual, grade is not used to compute completion, or this
|
|
// is a different numbered grade
|
|
if (!$this->is_enabled($cm) ||
|
|
$cm->completion == COMPLETION_TRACKING_MANUAL ||
|
|
is_null($cm->completiongradeitemnumber) ||
|
|
$item->itemnumber != $cm->completiongradeitemnumber) {
|
|
return;
|
|
}
|
|
|
|
// What is the expected result based on this grade?
|
|
if ($deleted) {
|
|
// Grade being deleted, so only change could be to make it incomplete
|
|
$possibleresult = COMPLETION_INCOMPLETE;
|
|
} else {
|
|
$possibleresult = self::internal_get_grade_state($item, $grade);
|
|
}
|
|
|
|
// OK, let's update state based on this
|
|
$this->update_state($cm, $possibleresult, $grade->userid);
|
|
}
|
|
|
|
/**
|
|
* Calculates the completion state that would result from a graded item
|
|
* (where grade-based completion is turned on) based on the actual grade
|
|
* and settings.
|
|
*
|
|
* Internal function. Not private, so we can unit-test it.
|
|
*
|
|
* @param grade_item $item an instance of grade_item
|
|
* @param grade_grade $grade an instance of grade_grade
|
|
* @return int Completion state e.g. COMPLETION_INCOMPLETE
|
|
*/
|
|
public static function internal_get_grade_state($item, $grade) {
|
|
// If no grade is supplied or the grade doesn't have an actual value, then
|
|
// this is not complete.
|
|
if (!$grade || (is_null($grade->finalgrade) && is_null($grade->rawgrade))) {
|
|
return COMPLETION_INCOMPLETE;
|
|
}
|
|
|
|
// Conditions to show pass/fail:
|
|
// a) Grade has pass mark (default is 0.00000 which is boolean true so be careful)
|
|
// b) Grade is visible (neither hidden nor hidden-until)
|
|
if ($item->gradepass && $item->gradepass > 0.000009 && !$item->hidden) {
|
|
// Use final grade if set otherwise raw grade
|
|
$score = !is_null($grade->finalgrade) ? $grade->finalgrade : $grade->rawgrade;
|
|
|
|
// We are displaying and tracking pass/fail
|
|
if ($score >= $item->gradepass) {
|
|
return COMPLETION_COMPLETE_PASS;
|
|
} else {
|
|
return COMPLETION_COMPLETE_FAIL;
|
|
}
|
|
} else {
|
|
// Not displaying pass/fail, so just if there is a grade
|
|
if (!is_null($grade->finalgrade) || !is_null($grade->rawgrade)) {
|
|
// Grade exists, so maybe complete now
|
|
return COMPLETION_COMPLETE;
|
|
} else {
|
|
// Grade does not exist, so maybe incomplete now
|
|
return COMPLETION_INCOMPLETE;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Aggregate activity completion state
|
|
*
|
|
* @param int $type Aggregation type (COMPLETION_* constant)
|
|
* @param bool $old Old state
|
|
* @param bool $new New state
|
|
* @return bool
|
|
*/
|
|
public static function aggregate_completion_states($type, $old, $new) {
|
|
if ($type == COMPLETION_AND) {
|
|
return $old && $new;
|
|
} else {
|
|
return $old || $new;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* This is to be used only for system errors (things that shouldn't happen)
|
|
* and not user-level errors.
|
|
*
|
|
* @global type $CFG
|
|
* @param string $error Error string (will not be displayed to user unless debugging is enabled)
|
|
* @throws moodle_exception Exception with the error string as debug info
|
|
*/
|
|
public function internal_systemerror($error) {
|
|
global $CFG;
|
|
throw new moodle_exception('err_system','completion',
|
|
$CFG->wwwroot.'/course/view.php?id='.$this->course->id,null,$error);
|
|
}
|
|
}
|