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<?php
namespace Fisharebest\Webtrees\Module\FamilyTreeFavorites\Schema;
/**
* webtrees: online genealogy
* Copyright (C) 2015 webtrees development team
* This program 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.
* This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
*/
use Fisharebest\Webtrees\Database;
use Fisharebest\Webtrees\Schema\MigrationInterface;
use PDOException;
/**
* Class Migration2 - upgrade the database schema from version 2 to version 3.
*/
class Migration2 implements MigrationInterface {
/** {@inheritDoc} */
public function upgrade() {
// Add foreign key constraints
// Delete any data that might violate the new constraints
Database::exec(
"DELETE FROM `##favorite`" .
" WHERE user_id NOT IN (SELECT user_id FROM `##user` )" .
" OR gedcom_id NOT IN (SELECT gedcom_id FROM `##gedcom`)"
);
// Add the new constraints
try {
Database::exec(
"ALTER TABLE `##favorite`" .
" ADD FOREIGN KEY favorite_fk1 (user_id ) REFERENCES `##user` (user_id) ON DELETE CASCADE," .
" ADD FOREIGN KEY favorite_fk2 (gedcom_id) REFERENCES `##gedcom` (gedcom_id) ON DELETE CASCADE"
);
} catch (PDOException $ex) {
// Already updated?
}
}
}
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