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Differences Between: [Versions 310 and 401] [Versions 39 and 401]

   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 observers for workshopallocation_scheduled.
  19   *
  20   * @package workshopallocation_scheduled
  21   * @copyright 2013 Adrian Greeve <adrian@moodle.com>
  22   * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  23   */
  24  
  25  namespace workshopallocation_scheduled;
  26  defined('MOODLE_INTERNAL') || die();
  27  
  28  /**
  29   * Class for workshopallocation_scheduled observers.
  30   *
  31   * @package workshopallocation_scheduled
  32   * @copyright 2013 Adrian Greeve <adrian@moodle.com>
  33   * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  34   */
  35  class observer {
  36  
  37      /**
  38       * Triggered when the '\mod_workshop\event\course_module_viewed' event is triggered.
  39       *
  40       * This does the same job as {@link workshopallocation_scheduled_cron()} but for the
  41       * single workshop. The idea is that we do not need to wait for cron to execute.
  42       * Displaying the workshop main view.php can trigger the scheduled allocation, too.
  43       *
  44       * @param \mod_workshop\event\course_module_viewed $event
  45       * @return bool
  46       */
  47      public static function workshop_viewed($event) {
  48          global $DB, $CFG;
  49  
  50          require_once($CFG->dirroot . '/mod/workshop/locallib.php');
  51  
  52          $workshop = $event->get_record_snapshot('workshop', $event->objectid);
  53          $course   = $event->get_record_snapshot('course', $event->courseid);
  54          $cm       = $event->get_record_snapshot('course_modules', $event->contextinstanceid);
  55  
  56          $workshop = new \workshop($workshop, $cm, $course);
  57          $now = time();
  58  
  59          // Non-expensive check to see if the scheduled allocation can even happen.
  60          if ($workshop->phase == \workshop::PHASE_SUBMISSION and $workshop->submissionend > 0 and $workshop->submissionend < $now) {
  61  
  62              // Make sure the scheduled allocation has been configured for this workshop, that it has not
  63              // been executed yet and that the passed workshop record is still valid.
  64              $sql = "SELECT a.id
  65                        FROM {workshopallocation_scheduled} a
  66                        JOIN {workshop} w ON a.workshopid = w.id
  67                       WHERE w.id = :workshopid
  68                             AND a.enabled = 1
  69                             AND w.phase = :phase
  70                             AND w.submissionend > 0
  71                             AND w.submissionend < :now
  72                             AND (a.timeallocated IS NULL OR a.timeallocated < w.submissionend)";
  73              $params = array('workshopid' => $workshop->id, 'phase' => \workshop::PHASE_SUBMISSION, 'now' => $now);
  74  
  75              if ($DB->record_exists_sql($sql, $params)) {
  76                  // Allocate submissions for assessments.
  77                  $allocator = $workshop->allocator_instance('scheduled');
  78                  $result = $allocator->execute();
  79                  // Todo inform the teachers about the results.
  80              }
  81          }
  82          return true;
  83      }
  84  
  85      /**
  86       * Called when the '\mod_workshop\event\phase_automatically_switched' event is triggered.
  87       *
  88       * This observer handles the phase_automatically_switched event triggered when phaseswithassesment is active
  89       * and the phase is automatically switched.
  90       *
  91       * When this happens, this situation can occur:
  92       *
  93       *     * cron_task transition the workshop to PHASE_ASESSMENT.
  94       *     * scheduled_allocator task executes.
  95       *     * scheduled_allocator task cannot allocate parcipants because workshop is not
  96       *       in PHASE_SUBMISSION state (it's in PHASE_ASSESMENT).
  97       *
  98       * @param \mod_workshop\event\phase_automatically_switched $event
  99       */
 100      public static function phase_automatically_switched(\mod_workshop\event\phase_automatically_switched $event) {
 101          if ($event->other['previousworkshopphase'] != \workshop::PHASE_SUBMISSION) {
 102              return;
 103          }
 104          if ($event->other['targetworkshopphase'] != \workshop::PHASE_ASSESSMENT) {
 105              return;
 106          }
 107  
 108          $workshop = $event->get_record_snapshot('workshop', $event->objectid);
 109          $course   = $event->get_record_snapshot('course', $event->courseid);
 110          $cm       = $event->get_record_snapshot('course_modules', $event->contextinstanceid);
 111  
 112          $workshop = new \workshop($workshop, $cm, $course);
 113          if ($workshop->phase != \workshop::PHASE_ASSESSMENT) {
 114              return;
 115          }
 116  
 117          $allocator = $workshop->allocator_instance('scheduled');
 118          // We know that we come from PHASE_SUBMISSION so we tell the allocator not to test for the PHASE_SUBMISSION state.
 119          $allocator->execute(false);
 120      }
 121  }