completion/criteria/completion_criteria_activity.php

   1 <?php
   2
   3 // This file is part of Moodle - http://moodle.org/
   4 //
   5 // Moodle is free software: you can redistribute it and/or modify
   6 // it under the terms of the GNU General Public License as published by
   7 // the Free Software Foundation, either version 3 of the License, or
   8 // (at your option) any later version.
   9 //
  10 // Moodle is distributed in the hope that it will be useful,
  11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 // GNU General Public License for more details.
  14 //
  15 // You should have received a copy of the GNU General Public License
  16 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  17
  18 /**
  19  * This file contains the activity completion criteria type class and any
  20  * supporting functions it may require.
  21  *
  22  * @package core_completion
  23  * @category completion
  24  * @copyright 2009 Catalyst IT Ltd
  25  * @author Aaron Barnes <aaronb@catalyst.net.nz>
  26  * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  27  */
  28
  29 defined('MOODLE_INTERNAL') || die();
  30
  31 /**
  32  * Course completion critieria - completion on activity completion
  33  *
  34  * @package core_completion
  35  * @category completion
  36  * @copyright 2009 Catalyst IT Ltd
  37  * @author Aaron Barnes <aaronb@catalyst.net.nz>
  38  * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  39  */
  40 class completion_criteria_activity extends completion_criteria {
  41
  42     /* @var int Criteria [COMPLETION_CRITERIA_TYPE_ACTIVITY] */
  43     public $criteriatype = COMPLETION_CRITERIA_TYPE_ACTIVITY;
  44
  45     /**
  46      * Finds and returns a data_object instance based on params.
  47      *
  48      * @param array $params associative arrays varname=>value
  49      * @return completion_criteria_activity data_object instance or false if none found.
  50      */
  51     public static function fetch($params) {
  52         $params['criteriatype'] = COMPLETION_CRITERIA_TYPE_ACTIVITY;
  53         return self::fetch_helper('course_completion_criteria', __CLASS__, $params);
  54     }
  55
  56     /**
  57      * Add appropriate form elements to the critieria form
  58      *
  59      * @param moodleform $mform  Moodle forms object
  60      * @param stdClass $data details of various modules
  61      */
  62     public function config_form_display(&$mform, $data = null) {
  63         $modnames = get_module_types_names();
  64         $mform->addElement('advcheckbox',
  65                 'criteria_activity['.$data->id.']',
  66                 $modnames[self::get_mod_name($data->module)] . ' - ' . format_string($data->name),
  67                 null,
  68                 array('group' => 1));
  69
  70         if ($this->id) {
  71             $mform->setDefault('criteria_activity['.$data->id.']', 1);
  72         }
  73     }
  74
  75     /**
  76      * Update the criteria information stored in the database
  77      *
  78      * @param stdClass $data Form data
  79      */
  80     public function update_config(&$data) {
  81         global $DB;
  82
  83         if (!empty($data->criteria_activity) && is_array($data->criteria_activity)) {
  84
  85             $this->course = $data->id;
  86
  87             // Data comes from advcheckbox, so contains keys for all activities.
  88             // A value of 0 is 'not checked' whereas 1 is 'checked'.
  89             foreach ($data->criteria_activity as $activity => $val) {
  90                 // Only update those which are checked.
  91                 if (!empty($val)) {
  92                     $module = $DB->get_record('course_modules', array('id' => $activity));
  93                     $this->module = self::get_mod_name($module->module);
  94                     $this->moduleinstance = $activity;
  95                     $this->id = null;
  96                     $this->insert();
  97                 }
  98             }
  99         }
 100     }
 101
 102     /**
 103      * Get module instance module type
 104      *
 105      * @param int $type Module type id
 106      * @return string
 107      */
 108     public static function get_mod_name($type) {
 109         static $types;
 110
 111         if (!is_array($types)) {
 112             global $DB;
 113             $types = $DB->get_records('modules');
 114         }
 115
 116         return $types[$type]->name;
 117     }
 118
 119     /**
 120      * Gets the module instance from the database and returns it.
 121      * If no module instance exists this function returns false.
 122      *
 123      * @return stdClass|bool
 124      */
 125     public function get_mod_instance() {
 126         global $DB;
 127
 128         return $DB->get_record_sql(
 129             "
 130                 SELECT
 131                     m.*
 132                 FROM
 133                     {{$this->module}} m
 134                 INNER JOIN
 135                     {course_modules} cm
 136                  ON cm.id = {$this->moduleinstance}
 137                 AND m.id = cm.instance
 138             "
 139         );
 140     }
 141
 142     /**
 143      * Review this criteria and decide if the user has completed
 144      *
 145      * @param completion_completion $completion     The user's completion record
 146      * @param bool $mark Optionally set false to not save changes to database
 147      * @return bool
 148      */
 149     public function review($completion, $mark = true) {
 150         global $DB;
 151
 152         $course = $DB->get_record('course', array('id' => $completion->course));
 153         $cm = $DB->get_record('course_modules', array('id' => $this->moduleinstance));
 154         $info = new completion_info($course);
 155
 156         $data = $info->get_data($cm, false, $completion->userid);
 157
 158         // If the activity is complete
 159         if (in_array($data->completionstate, array(COMPLETION_COMPLETE, COMPLETION_COMPLETE_PASS, COMPLETION_COMPLETE_FAIL))) {
 160             if ($mark) {
 161                 $completion->mark_complete();
 162             }
 163
 164             return true;
 165         }
 166
 167         return false;
 168     }
 169
 170     /**
 171      * Return criteria title for display in reports
 172      *
 173      * @return string
 174      */
 175     public function get_title() {
 176         return get_string('activitiescompleted', 'completion');
 177     }
 178
 179     /**
 180      * Return a more detailed criteria title for display in reports
 181      *
 182      * @return  string
 183      */
 184     public function get_title_detailed() {
 185         global $DB;
 186         $module = $DB->get_record('course_modules', array('id' => $this->moduleinstance));
 187         $activity = $DB->get_record($this->module, array('id' => $module->instance));
 188
 189         return shorten_text(format_string($activity->name, true,
 190                 array('context' => context_module::instance($module->id))));
 191     }
 192
 193     /**
 194      * Return criteria type title for display in reports
 195      *
 196      * @return  string
 197      */
 198     public function get_type_title() {
 199         return get_string('activities', 'completion');
 200     }
 201
 202     /**
 203      * Find users who have completed this criteria and mark them accordingly
 204      */
 205     public function cron() {
 206         global $DB;
 207
 208         // Get all users who meet this criteria
 209         $sql = '
 210             SELECT DISTINCT
 211                 c.id AS course,
 212                 cr.id AS criteriaid,
 213                 ra.userid AS userid,
 214                 mc.timemodified AS timecompleted
 215             FROM
 216                 {course_completion_criteria} cr
 217             INNER JOIN
 218                 {course} c
 219              ON cr.course = c.id
 220             INNER JOIN
 221                 {context} con
 222              ON con.instanceid = c.id
 223             INNER JOIN
 224                 {role_assignments} ra
 225               ON ra.contextid = con.id
 226             INNER JOIN
 227                 {course_modules_completion} mc
 228              ON mc.coursemoduleid = cr.moduleinstance
 229             AND mc.userid = ra.userid
 230             LEFT JOIN
 231                 {course_completion_crit_compl} cc
 232              ON cc.criteriaid = cr.id
 233             AND cc.userid = ra.userid
 234             WHERE
 235                 cr.criteriatype = '.COMPLETION_CRITERIA_TYPE_ACTIVITY.'
 236             AND con.contextlevel = '.CONTEXT_COURSE.'
 237             AND c.enablecompletion = 1
 238             AND cc.id IS NULL
 239             AND (
 240                 mc.completionstate = '.COMPLETION_COMPLETE.'
 241              OR mc.completionstate = '.COMPLETION_COMPLETE_PASS.'
 242              OR mc.completionstate = '.COMPLETION_COMPLETE_FAIL.'
 243                 )
 244         ';
 245
 246         // Loop through completions, and mark as complete
 247         $rs = $DB->get_recordset_sql($sql);
 248         foreach ($rs as $record) {
 249             $completion = new completion_criteria_completion((array) $record, DATA_OBJECT_FETCH_BY_KEY);
 250             $completion->mark_complete($record->timecompleted);
 251         }
 252         $rs->close();
 253     }
 254
 255     /**
 256      * Return criteria progress details for display in reports
 257      *
 258      * @param completion_completion $completion The user's completion record
 259      * @return array An array with the following keys:
 260      *     type, criteria, requirement, status
 261      */
 262     public function get_details($completion) {
 263         // Get completion info
 264         $modinfo = get_fast_modinfo($completion->course);
 265         $cm = $modinfo->get_cm($this->moduleinstance);
 266
 267         $details = array();
 268         $details['type'] = $this->get_title();
 269         if ($cm->has_view()) {
 270             $details['criteria'] = html_writer::link($cm->url, $cm->get_formatted_name());
 271         } else {
 272             $details['criteria'] = $cm->get_formatted_name();
 273         }
 274
 275         // Build requirements
 276         $details['requirement'] = array();
 277
 278         if ($cm->completion == COMPLETION_TRACKING_MANUAL) {
 279             $details['requirement'][] = get_string('markingyourselfcomplete', 'completion');
 280         } elseif ($cm->completion == COMPLETION_TRACKING_AUTOMATIC) {
 281             if ($cm->completionview) {
 282                 $modulename = core_text::strtolower(get_string('modulename', $this->module));
 283                 $details['requirement'][] = get_string('viewingactivity', 'completion', $modulename);
 284             }
 285
 286             if (!is_null($cm->completiongradeitemnumber)) {
 287                 $details['requirement'][] = get_string('achievinggrade', 'completion');
 288             }
 289         }
 290
 291         $details['requirement'] = implode(', ', $details['requirement']);
 292
 293         $details['status'] = '';
 294
 295         return $details;
 296     }
 297
 298     /**
 299      * Return pix_icon for display in reports.
 300      *
 301      * @param string $alt The alt text to use for the icon
 302      * @param array $attributes html attributes
 303      * @return pix_icon
 304      */
 305     public function get_icon($alt, array $attributes = null) {
 306         return new pix_icon('icon', $alt, 'mod_'.$this->module, $attributes);
 307     }
 308 }