Yii交易不会回滚

Question

Yii transaction doesn't roll back in the below sample code and records saved in DB:

        $transaction = Yii::app()->db->beginTransaction();
        $mode_1 = new Orders;
        $mode_1->id_order = 3333;
        $mode_1->AWB = 3333;
        $mode_2 = new Orders;
        $mode_2->id_order = 4444;
        $mode_2->AWB = 4444;
        $mode_2->save();
        $mode_1->save();
    $transaction->rollback();

any Idea? .. thanks

Answer 1

The right way to use transactions is to use them with the try-catch construction. In your example I think that the problem comes because you didn't do the commit ($transaction->commit()).

$transaction = Yii::app()->db->beginTransaction();
try {
    if (!$model->save()) {
        throw new Exception('Model cannot be saved.');
    }
    if (!$anothermodel->save()) {
        throw new Exception('Anothermodel cannot be saved.');
    }

    $transaction->commit();
} catch (Exception $e) {
    $transaction->rollback();
}

EDIT: $model->save() doesn't throw Exception, so you need to throw it!

Answer 2

Make sure that the storage engine for your tables is InnoDB. I believe it is the only transaction-safe engine available by default. More on available engines in the mysql docs