Using Transaction with Active Record in Yii

gistfile1.txt

$model=Post::model();
$transaction=$model->dbConnection->beginTransaction();
try
{
    // find and save are two steps which may be intervened by another request
    // we therefore use a transaction to ensure consistency and integrity
    $post=$model->findByPk(10);
    $post->title='new post title';
    if($post->save())
        $transaction->commit();
    else
        $transaction->rollback();
}
catch(Exception $e)
{
    $transaction->rollback();
    throw $e;
}