<?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 feedback module.
 *
 * 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   mod_feedback
 * @copyright Andreas Grabs
 * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

defined('MOODLE_INTERNAL') || die();

function xmldb_feedback_upgrade($oldversion) {

<     global $CFG;



>     global $CFG, $DB;




<     // Automatically generated Moodle v3.6.0 release upgrade line.
<     // Put any upgrade step following this.
< 
<     // Automatically generated Moodle v3.7.0 release upgrade line.
<     // Put any upgrade step following this.
< 
<     // Automatically generated Moodle v3.8.0 release upgrade line.
<     // Put any upgrade step following this.



>     $dbman = $DB->get_manager(); // Loads ddl manager and xmldb classes.



    // Automatically generated Moodle v3.9.0 release upgrade line.
    // Put any upgrade step following this.


<     // Automatically generated Moodle v3.10.0 release upgrade line.



>     // Automatically generated Moodle v4.0.0 release upgrade line.


    // Put any upgrade step following this.

>     if ($oldversion < 2022053000) {

>         // Define key courseid (foreign) to be added to feedback_completed.
    // Automatically generated Moodle v3.11.0 release upgrade line.
>          $table = new xmldb_table('feedback_completed');
    // Put any upgrade step following this.
>          $key = new xmldb_key('courseid', XMLDB_KEY_FOREIGN, ['courseid'], 'course', ['id']);

> 
    return true;
>          // Launch add key courseid.
}
>          $dbman->add_key($table, $key);
> 
>          // Feedback savepoint reached.
>          upgrade_mod_savepoint(true, 2022053000, 'feedback');
>     }



<     // Automatically generated Moodle v3.11.0 release upgrade line.



>     // Automatically generated Moodle v4.1.0 release upgrade line.