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1. There is a new admin setting to control whether this feature is enabled. The admin can set the auto-save frequency to 1, 2 or 5 minutes, or disable it. 2. When autosave is enabled, there is code in the quiz that monitors the main quiz form, and does an ajax save call at the given frequency when changes are being made by the student. 3. The ajax saves go to a new script that calls the question engine to do the work. 4. To avoid simultaneous autosave + submit and finish, the auto-save system shuts down shortly before time expires in a timed quiz.
63 lines
2.1 KiB
PHP
63 lines
2.1 KiB
PHP
<?php
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// This file is part of Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
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/**
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* Thisscript processes ajax auto-save requests during the quiz.
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*
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* @package mod_quiz
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* @copyright 2013 The Open University
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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define('AJAX_SCRIPT', true);
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require_once(dirname(__FILE__) . '/../../config.php');
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require_once($CFG->dirroot . '/mod/quiz/locallib.php');
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// Remember the current time as the time any responses were submitted
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// (so as to make sure students don't get penalized for slow processing on this page).
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$timenow = time();
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require_sesskey();
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// Get submitted parameters.
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$attemptid = required_param('attempt', PARAM_INT);
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$thispage = optional_param('thispage', 0, PARAM_INT);
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$transaction = $DB->start_delegated_transaction();
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$attemptobj = quiz_attempt::create($attemptid);
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// Check login.
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require_login($attemptobj->get_course(), false, $attemptobj->get_cm());
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// Check that this attempt belongs to this user.
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if ($attemptobj->get_userid() != $USER->id) {
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throw new moodle_quiz_exception($attemptobj->get_quizobj(), 'notyourattempt');
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}
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// Check capabilities.
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if (!$attemptobj->is_preview_user()) {
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$attemptobj->require_capability('mod/quiz:attempt');
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}
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// If the attempt is already closed, send them to the review page.
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if ($attemptobj->is_finished()) {
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throw new moodle_quiz_exception($attemptobj->get_quizobj(),
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'attemptalreadyclosed', null, $attemptobj->review_url());
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}
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$attemptobj->process_auto_save($timenow);
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$transaction->allow_commit();
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