[Summary view]

   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   * Event observer.
  19   *
  20   * @package    block_recentlyaccesseditems
  21   * @copyright  2018 Victor Deniz
  22   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  23   */
  24  
  25  namespace block_recentlyaccesseditems;
  26  
  27  defined('MOODLE_INTERNAL') || die();
  28  
  29  /**
  30   * Events observer.
  31   *
  32   * Stores all actions about modules viewed in block_recentlyaccesseditems table.
  33   *
  34   * @package    block_recentlyaccesseditems
  35   * @copyright  2018 Victor Deniz <victor@moodle.com>
  36   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  37   */
  38  class observer {
  39  
  40      /**
  41       * @var string Block table name.
  42       */
  43      private static $table = 'block_recentlyaccesseditems';
  44  
  45      /**
  46       * Register items views in block_recentlyaccesseditems table.
  47       *
  48       * When the item is view for the first time, a new record is created. If the item was viewed before, the time is
  49       * updated.
  50       *
  51       * @param \core\event\base $event
  52       */
  53      public static function store(\core\event\base $event) {
  54          global $DB;
  55  
  56          if (!isloggedin() or \core\session\manager::is_loggedinas() or isguestuser()) {
  57              // No access tracking.
  58              return;
  59          }
  60  
  61          $conditions = [
  62              'userid' => $event->userid
  63          ];
  64  
  65          $records = $DB->get_records(self::$table, $conditions, "timeaccess DESC");
  66  
  67          foreach ($records as $record) {
  68              if (($record->userid == $event->userid) && ($record->cmid == $event->contextinstanceid)) {
  69                  $conditions = [
  70                          'userid' => $event->userid,
  71                          'cmid' => $event->contextinstanceid
  72                  ];
  73                  $DB->set_field(self::$table, 'timeaccess', $event->timecreated, $conditions);
  74                  return;
  75              }
  76          }
  77  
  78          if (count($records) >= 9) {
  79              $conditions = [
  80                      'id' => end($records)->id,
  81              ];
  82              $DB->delete_records(self::$table, $conditions);
  83          }
  84  
  85          $eventdata = new \stdClass();
  86  
  87          $eventdata->cmid = $event->contextinstanceid;
  88          $eventdata->timeaccess = $event->timecreated;
  89          $eventdata->courseid = $event->courseid;
  90          $eventdata->userid = $event->userid;
  91  
  92          $DB->insert_record(self::$table, $eventdata);
  93      }
  94  
  95      /**
  96       * Remove record when course module is deleted.
  97       *
  98       * @param \core\event\base $event
  99       */
 100      public static function remove(\core\event\base $event) {
 101          global $DB;
 102  
 103          $DB->delete_records(self::$table, array('cmid' => $event->contextinstanceid));
 104      }
 105  }