moodle/question/upgrade.php

27 lines
1.1 KiB
PHP

<?php // $Id$
/**
* This file contains dtabase upgrade code that is called from lib/db/upgrade.php,
* and also check methods that can be used for pre-install checks via
* admin/environment.php and lib/environmentlib.php.
*
* @copyright &copy; 2007 The Open University
* @author T.J.Hunt@open.ac.uk
* @license http://www.gnu.org/copyleft/gpl.html GNU Public License
* @package questionbank
*/
/**
* In Moodle, all random questions should have question.parent set to be the same
* as question.id. One effect of MDL-5482 is that this will not be true for questions that
* were backed up then restored. The probably does not cause many problems, except occasionally,
* if the bogus question.parent happens to point to a multianswer question type, or when you
* try to do a subsequent backup. Anyway, these question.parent values should be fixed, and
* that is what this update does.
*/
function question_fix_random_question_parents() {
global $CFG, $DB;
return $DB->execute("UPDATE {question} SET parent = id WHERE qtype = 'random' AND parent <> id");
}
?>