yii在插入时捕获cdbexception

Question

我想在插入时捕获数据库异常（如外键或重复异常）。

try {       
        $command = Yii::app()->db->createCommand()
        ->insert('table1', array(
                'sid'=>$sid,
                'val1'=>$val1
                ));
        } catch (CDbException  $e) {
            die();
        }

但是在我抓住它之前，命令会抛出异常。

...\framework\db\CDbCommand.php(358)

346         {
347             if($this->_connection->enableProfiling)
348                 Yii::endProfile('system.db.CDbCommand.execute('.$this->getText().$par.')','system.db.CDbCommand.execute');
349 
350             $errorInfo=$e instanceof PDOException ? $e->errorInfo : null;
351             $message=$e->getMessage();
352             Yii::log(Yii::t('yii','CDbCommand::execute() failed: {error}. The SQL statement executed was: {sql}.',
353                 array('{error}'=>$message, '{sql}'=>$this->getText().$par)),CLogger::LEVEL_ERROR,'system.db.CDbCommand');
354 
355             if(YII_DEBUG)
356                 $message.='. The SQL statement executed was: '.$this->getText().$par;
357 
358             throw new CDbException(Yii::t('yii','CDbCommand failed to execute the SQL statement: {error}',
359                 array('{error}'=>$message)),(int)$e->getCode(),$errorInfo);
360         }
361     }