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Differences Between: [Versions 39 and 310] [Versions 39 and 311] [Versions 39 and 400] [Versions 39 and 401] [Versions 39 and 402] [Versions 39 and 403]

   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   * Course completion status for a particular user/course
  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  require_once($CFG->dirroot.'/completion/data_object.php');
  29  
  30  /**
  31   * Course completion status for a particular user/course
  32   *
  33   * @package core_completion
  34   * @category completion
  35   * @copyright 2009 Catalyst IT Ltd
  36   * @author Aaron Barnes <aaronb@catalyst.net.nz>
  37   * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  38   */
  39  class completion_completion extends data_object {
  40  
  41      /* @var string $table Database table name that stores completion information */
  42      public $table = 'course_completions';
  43  
  44      /* @var array $required_fields Array of required table fields, must start with 'id'. */
  45      public $required_fields = array('id', 'userid', 'course',
  46          'timeenrolled', 'timestarted', 'timecompleted', 'reaggregate');
  47  
  48      /* @var int $userid User ID */
  49      public $userid;
  50  
  51      /* @var int $course Course ID */
  52      public $course;
  53  
  54      /* @var int Time of course enrolment {@link completion_completion::mark_enrolled()} */
  55      public $timeenrolled;
  56  
  57      /**
  58       * Time the user started their course completion {@link completion_completion::mark_inprogress()}
  59       * @var int
  60       */
  61      public $timestarted;
  62  
  63      /* @var int Timestamp of course completion {@link completion_completion::mark_complete()} */
  64      public $timecompleted;
  65  
  66      /* @var int Flag to trigger cron aggregation (timestamp) */
  67      public $reaggregate;
  68  
  69  
  70      /**
  71       * Finds and returns a data_object instance based on params.
  72       *
  73       * @param array $params associative arrays varname = >value
  74       * @return data_object instance of data_object or false if none found.
  75       */
  76      public static function fetch($params) {
  77          $cache = cache::make('core', 'coursecompletion');
  78  
  79          $key = $params['userid'] . '_' . $params['course'];
  80          if ($hit = $cache->get($key)) {
  81              return $hit['value'];
  82          }
  83  
  84          $tocache = self::fetch_helper('course_completions', __CLASS__, $params);
  85          $cache->set($key, ['value' => $tocache]);
  86          return $tocache;
  87      }
  88  
  89      /**
  90       * Return status of this completion
  91       *
  92       * @return bool
  93       */
  94      public function is_complete() {
  95          return (bool) $this->timecompleted;
  96      }
  97  
  98      /**
  99       * Mark this user as started (or enrolled) in this course
 100       *
 101       * If the user is already marked as started, no change will occur
 102       *
 103       * @param integer $timeenrolled Time enrolled (optional)
 104       */
 105      public function mark_enrolled($timeenrolled = null) {
 106  
 107          if ($this->timeenrolled === null) {
 108  
 109              if ($timeenrolled === null) {
 110                  $timeenrolled = time();
 111              }
 112  
 113              $this->timeenrolled = $timeenrolled;
 114          }
 115  
 116          return $this->_save();
 117      }
 118  
 119      /**
 120       * Mark this user as inprogress in this course
 121       *
 122       * If the user is already marked as inprogress, the time will not be changed
 123       *
 124       * @param integer $timestarted Time started (optional)
 125       */
 126      public function mark_inprogress($timestarted = null) {
 127  
 128          $timenow = time();
 129  
 130          // Set reaggregate flag
 131          $this->reaggregate = $timenow;
 132  
 133          if (!$this->timestarted) {
 134  
 135              if (!$timestarted) {
 136                  $timestarted = $timenow;
 137              }
 138  
 139              $this->timestarted = $timestarted;
 140          }
 141  
 142          return $this->_save();
 143      }
 144  
 145      /**
 146       * Mark this user complete in this course
 147       *
 148       * This generally happens when the required completion criteria
 149       * in the course are complete.
 150       *
 151       * @param integer $timecomplete Time completed (optional)
 152       * @return void
 153       */
 154      public function mark_complete($timecomplete = null) {
 155          global $USER;
 156  
 157          // Never change a completion time.
 158          if ($this->timecompleted) {
 159              return;
 160          }
 161  
 162          // Use current time if nothing supplied.
 163          if (!$timecomplete) {
 164              $timecomplete = time();
 165          }
 166  
 167          // Set time complete.
 168          $this->timecompleted = $timecomplete;
 169  
 170          // Save record.
 171          if ($result = $this->_save()) {
 172              $data = $this->get_record_data();
 173              \core\event\course_completed::create_from_completion($data)->trigger();
 174          }
 175  
 176          return $result;
 177      }
 178  
 179      /**
 180       * Save course completion status
 181       *
 182       * This method creates a course_completions record if none exists
 183       * @access  private
 184       * @return  bool
 185       */
 186      private function _save() {
 187          if ($this->timeenrolled === null) {
 188              $this->timeenrolled = 0;
 189          }
 190  
 191          $result = false;
 192          // Save record
 193          if ($this->id) {
 194              $result = $this->update();
 195          } else {
 196              // Make sure reaggregate field is not null
 197              if (!$this->reaggregate) {
 198                  $this->reaggregate = 0;
 199              }
 200  
 201              // Make sure timestarted is not null
 202              if (!$this->timestarted) {
 203                  $this->timestarted = 0;
 204              }
 205  
 206              $result = $this->insert();
 207          }
 208  
 209          if ($result) {
 210              // Update the cached record.
 211              $cache = cache::make('core', 'coursecompletion');
 212              $data = $this->get_record_data();
 213              $key = $data->userid . '_' . $data->course;
 214              $cache->set($key, ['value' => $data]);
 215          }
 216  
 217          return $result;
 218      }
 219  }