YII 中的事务处理机制

$model=Post::model();
$transaction=$model->dbConnection->beginTransaction(); 
try｛
  $post=$model->findByPk(10);  
  $post->title='new post title';  
  $post->save();  
  $transaction->commit(); 
｝catch(Exception $e)｛
    $transaction->rollBack(); 
｝

摘至：http://blog.csdn.net/xinqingch/article/details/8186745