mod/quiz/autosave.ajax.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  * Thisscript processes ajax auto-save requests during the quiz.
  19  *
  20  * @package    mod_quiz
  21  * @copyright  2013 The Open University
  22  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  23  */
  24
  25 define('AJAX_SCRIPT', true);
  26
  27 require_once(dirname(__FILE__) . '/../../config.php');
  28 require_once($CFG->dirroot . '/mod/quiz/locallib.php');
  29
  30 // Remember the current time as the time any responses were submitted
  31 // (so as to make sure students don't get penalized for slow processing on this page).
  32 $timenow = time();
  33 require_sesskey();
  34
  35 // Get submitted parameters.
  36 $attemptid = required_param('attempt',  PARAM_INT);
  37 $thispage  = optional_param('thispage', 0, PARAM_INT);
  38
  39 $transaction = $DB->start_delegated_transaction();
  40 $attemptobj = quiz_attempt::create($attemptid);
  41
  42 // Check login.
  43 require_login($attemptobj->get_course(), false, $attemptobj->get_cm());
  44
  45 // Check that this attempt belongs to this user.
  46 if ($attemptobj->get_userid() != $USER->id) {
  47     throw new moodle_quiz_exception($attemptobj->get_quizobj(), 'notyourattempt');
  48 }
  49
  50 // Check capabilities.
  51 if (!$attemptobj->is_preview_user()) {
  52     $attemptobj->require_capability('mod/quiz:attempt');
  53 }
  54
  55 // If the attempt is already closed, send them to the review page.
  56 if ($attemptobj->is_finished()) {
  57     throw new moodle_quiz_exception($attemptobj->get_quizobj(),
  58             'attemptalreadyclosed', null, $attemptobj->review_url());
  59 }
  60
  61 $attemptobj->process_auto_save($timenow);
  62 $transaction->allow_commit();
  63 echo 'OK';