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<?php
use yii\db\Migration;
/**
* Handles the update of foreign key 'screen_template-template_background1' from table `screen_template`.
*/
// @codingStandardsIgnoreLine
class m170210_155249_update_screen_template_fk extends Migration
{
public function up()
$this->dropForeignKey(
'fk_screen_template_template_background1',
'screen_template'
);
$this->addForeignKey(
'screen_template',
'background_id',
'template_background',
'id',
'SET NULL',
'SET NULL'
}
public function down()
'CASCADE',
'CASCADE'