Merge branch 'MDL-70261-310' of git://github.com/ilya-catalyst/moodle into MOODLE_310...
[moodle.git] / question / upgrade.php
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aeb15530 1<?php
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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
bac40536 17/**
61676608 18 * This file contains datbase upgrade code that is called from lib/db/upgrade.php,
bac40536 19 * and also check methods that can be used for pre-install checks via
20 * admin/environment.php and lib/environmentlib.php.
21 *
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22 * @package moodlecore
23 * @subpackage questionbank
24 * @copyright 2007 The Open University
25 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
271e6dec 26 */
bac40536 27
d3603157 28
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29defined('MOODLE_INTERNAL') || die();
30
31
994fbaab 32/**
33 * In Moodle, all random questions should have question.parent set to be the same
34 * as question.id. One effect of MDL-5482 is that this will not be true for questions that
35 * were backed up then restored. The probably does not cause many problems, except occasionally,
36 * if the bogus question.parent happens to point to a multianswer question type, or when you
37 * try to do a subsequent backup. Anyway, these question.parent values should be fixed, and
38 * that is what this update does.
39 */
40function question_fix_random_question_parents() {
f34488b2 41 global $CFG, $DB;
61676608 42 $DB->execute("UPDATE {question} SET parent = id WHERE qtype = 'random' AND parent <> id");
46f2a936 43
61676608 44 return true;
994fbaab 45}