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<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
/**
* This file keeps track of upgrades to the recentlyaccesseditems block
*
* Sometimes, changes between versions involve alterations to database structures
* and other major things that may break installations.
*
* The upgrade function in this file will attempt to perform all the necessary
* actions to upgrade your older installation to the current version.
*
* If there's something it cannot do itself, it will tell you what you need to do.
*
* The commands in here will all be database-neutral, using the methods of
* database_manager class
*
* Please do not forget to use upgrade_set_timeout()
* before any action that may take longer time to finish.
*
* @package block_recentlyaccesseditems
* @copyright 2019 Peter Dias
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
defined('MOODLE_INTERNAL') || die();
/**
* Upgrade the recentlyaccesseditems db table.
*
* @param $oldversion
* @return bool
*/
function xmldb_block_recentlyaccesseditems_upgrade($oldversion, $block) {
global $DB;
// Automatically generated Moodle v3.7.0 release upgrade line.
// Put any upgrade step following this.
if ($oldversion < 2019052001) {
// Query the items to be deleted as a list of IDs. We cannot delete directly from this as a
// subquery because MySQL does not support delete with subqueries.
$fordeletion = $DB->get_fieldset_sql("
SELECT rai.id
FROM {block_recentlyaccesseditems} rai
LEFT JOIN {course} c ON c.id = rai.courseid
LEFT JOIN {course_modules} cm ON cm.id = rai.cmid
WHERE c.id IS NULL OR cm.id IS NULL");
// Delete the array in chunks of 500 (Oracle does not support more than 1000 parameters,
// let's leave some leeway, there are likely only one chunk anyway).
$chunks = array_chunk($fordeletion, 500);
foreach ($chunks as $chunk) {
$DB->delete_records_list('block_recentlyaccesseditems', 'id', $chunk);
}
upgrade_block_savepoint(true, 2019052001, 'recentlyaccesseditems', false);
}
// Automatically generated Moodle v3.8.0 release upgrade line.
// Put any upgrade step following this.
return true;
}