completion/criteria/completion_criteria_course.php

   1 <?php
   2 // This file is part of Moodle - http://moodle.org/
   3 //
   4 // Moodle is free software: you can redistribute it and/or modify
   5 // it under the terms of the GNU General Public License as published by
   6 // the Free Software Foundation, either version 3 of the License, or
   7 // (at your option) any later version.
   8 //
   9 // Moodle is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13 //
  14 // You should have received a copy of the GNU General Public License
  15 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  16
  17 /**
  18  * This file contains the course criteria type.
  19  *
  20  * @package core_completion
  21  * @category completion
  22  * @copyright 2009 Catalyst IT Ltd
  23  * @author Aaron Barnes <aaronb@catalyst.net.nz>
  24  * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  25  */
  26
  27 defined('MOODLE_INTERNAL') || die();
  28
  29 /**
  30  * Course completion critieria - completion on course completion
  31  *
  32  * This course completion criteria depends on another course with
  33  * completion enabled to be marked as complete for this user
  34  *
  35  * @package core_completion
  36  * @category completion
  37  * @copyright 2009 Catalyst IT Ltd
  38  * @author Aaron Barnes <aaronb@catalyst.net.nz>
  39  * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  40  */
  41 class completion_criteria_course extends completion_criteria {
  42
  43     /* @var int Criteria type constant */
  44     public $criteriatype = COMPLETION_CRITERIA_TYPE_COURSE;
  45
  46     /**
  47      * Finds and returns a data_object instance based on params.
  48      *
  49      * @param array $params associative arrays varname=>value
  50      * @return data_object instance of data_object or false if none found.
  51      */
  52     public static function fetch($params) {
  53         $params['criteriatype'] = COMPLETION_CRITERIA_TYPE_COURSE;
  54         return self::fetch_helper('course_completion_criteria', __CLASS__, $params);
  55     }
  56
  57     /**
  58      * Add appropriate form elements to the critieria form
  59      *
  60      * @param moodle_form $mform Moodle forms object
  61      * @param stdClass $data data used to define default value of the form
  62      */
  63     public function config_form_display(&$mform, $data = null) {
  64         global $CFG;
  65
  66         $link = "<a href=\"{$CFG->wwwroot}/course/view.php?id={$data->id}\">".s($data->fullname).'</a>';
  67         $mform->addElement('checkbox', 'criteria_course['.$data->id.']', $link);
  68
  69         if ($this->id) {
  70             $mform->setDefault('criteria_course['.$data->id.']', 1);
  71         }
  72     }
  73
  74     /**
  75      * Update the criteria information stored in the database
  76      *
  77      * @param array $data Form data
  78      */
  79     public function update_config(&$data) {
  80
  81         if (!empty($data->criteria_course) && is_array($data->criteria_course)) {
  82
  83             $this->course = $data->id;
  84
  85             foreach ($data->criteria_course as $course) {
  86
  87                 $this->courseinstance = $course;
  88                 $this->id = NULL;
  89                 $this->insert();
  90             }
  91         }
  92     }
  93
  94     /**
  95      * Review this criteria and decide if the user has completed
  96      *
  97      * @param completion_completion $completion The user's completion record
  98      * @param bool $mark Optionally set false to not save changes to database
  99      * @return bool
 100      */
 101     public function review($completion, $mark = true) {
 102         global $DB;
 103
 104         $course = $DB->get_record('course', array('id' => $this->courseinstance));
 105         $info = new completion_info($course);
 106
 107         // If the course is complete
 108         if ($info->is_course_complete($completion->userid)) {
 109
 110             if ($mark) {
 111                 $completion->mark_complete();
 112             }
 113
 114             return true;
 115         }
 116
 117         return false;
 118     }
 119
 120     /**
 121      * Return criteria title for display in reports
 122      *
 123      * @return string
 124      */
 125     public function get_title() {
 126         return get_string('dependenciescompleted', 'completion');
 127     }
 128
 129     /**
 130      * Return a more detailed criteria title for display in reports
 131      *
 132      * @return string
 133      */
 134     public function get_title_detailed() {
 135         global $DB;
 136
 137         $prereq = $DB->get_record('course', array('id' => $this->courseinstance));
 138         $coursecontext = context_course::instance($prereq->id, MUST_EXIST);
 139         $fullname = format_string($prereq->fullname, true, array('context' => $coursecontext));
 140         return shorten_text(urldecode($fullname));
 141     }
 142
 143     /**
 144      * Return criteria type title for display in reports
 145      *
 146      * @return string
 147      */
 148     public function get_type_title() {
 149         return get_string('dependencies', 'completion');
 150     }
 151
 152     /**
 153      * Find user's who have completed this criteria
 154      */
 155     public function cron() {
 156
 157         global $DB;
 158
 159         // Get all users who meet this criteria
 160         $sql = "
 161             SELECT DISTINCT
 162                 c.id AS course,
 163                 cr.id AS criteriaid,
 164                 ra.userid AS userid,
 165                 cc.timecompleted AS timecompleted
 166             FROM
 167                 {course_completion_criteria} cr
 168             INNER JOIN
 169                 {course} c
 170              ON cr.course = c.id
 171             INNER JOIN
 172                 {context} con
 173              ON con.instanceid = c.id
 174             INNER JOIN
 175                 {role_assignments} ra
 176               ON ra.contextid = con.id
 177             INNER JOIN
 178                 {course_completions} cc
 179              ON cc.course = cr.courseinstance
 180             AND cc.userid = ra.userid
 181             LEFT JOIN
 182                 {course_completion_crit_compl} ccc
 183              ON ccc.criteriaid = cr.id
 184             AND ccc.userid = ra.userid
 185             WHERE
 186                 cr.criteriatype = ".COMPLETION_CRITERIA_TYPE_COURSE."
 187             AND con.contextlevel = ".CONTEXT_COURSE."
 188             AND c.enablecompletion = 1
 189             AND ccc.id IS NULL
 190             AND cc.timecompleted IS NOT NULL
 191         ";
 192
 193         // Loop through completions, and mark as complete
 194         $rs = $DB->get_recordset_sql($sql);
 195         foreach ($rs as $record) {
 196             $completion = new completion_criteria_completion((array) $record, DATA_OBJECT_FETCH_BY_KEY);
 197             $completion->mark_complete($record->timecompleted);
 198         }
 199         $rs->close();
 200     }
 201
 202     /**
 203      * Return criteria progress details for display in reports
 204      *
 205      * @param completion_completion $completion The user's completion record
 206      * @return array An array with the following keys:
 207      *     type, criteria, requirement, status
 208      */
 209     public function get_details($completion) {
 210         global $CFG, $DB;
 211
 212         // Get completion info
 213         $course = new stdClass();
 214         $course->id = $completion->course;
 215         $info = new completion_info($course);
 216
 217         $prereq = $DB->get_record('course', array('id' => $this->courseinstance));
 218         $coursecontext = context_course::instance($prereq->id, MUST_EXIST);
 219         $fullname = format_string($prereq->fullname, true, array('context' => $coursecontext));
 220
 221         $prereq_info = new completion_info($prereq);
 222
 223         $details = array();
 224         $details['type'] = $this->get_title();
 225         $details['criteria'] = '<a href="'.$CFG->wwwroot.'/course/view.php?id='.$this->courseinstance.'">'.s($fullname).'</a>';
 226         $details['requirement'] = get_string('coursecompleted', 'completion');
 227         $details['status'] = '<a href="'.$CFG->wwwroot.'/blocks/completionstatus/details.php?course='.$this->courseinstance.'">'.get_string('seedetails', 'completion').'</a>';
 228
 229         return $details;
 230     }
 231 }