rest - How to catch DB exception when overriding actionCreate in Yii2 RESTful API? -

i'm using yii2 restful api implementation. start: http://budiirawan.com/setup-restful-api-yii2/

i'm overriding create method own action:

    public function actioncreate(){         $params = $_request;             if (!empty($params["name"]) && !empty($params["code"])) {             $model = new $this->modelclass;             foreach ($params $key => $value) {                 if (!$model->hasattribute($key)) {                     throw new \yii\web\httpexception(400, 'invalid attribute:' . $key);                 }             }              $model->attributes=$params;             try {                 $model->save();             } catch (cdbexception $ex) {                 // ... never reach point :-(                 throw new \yii\web\httpexception(405, 'error saving model');             } catch (exception $ex) {                 // ... never reach point :-(                 throw new \yii\web\httpexception(405, 'error saving model');             }          } else {             throw new \yii\web\httpexception(400, 'no data input');         }      } 

the problem when model trying saved, in case there "integrity constraint violation" in database.

what handle error , run "catch", don't know how "catch" error, because yii "taking control" of error , throw 500 error response.

how can handle "model save" errors ?

yii2 not have cdbexception. catch db related exceptions need catch(\yii\db\exception $e){...} , catch other exceptions catch(\exception $e){...}

you catching 2 exceptions same thing

catch(\exception $e){      throw new \yii\web\httpexception(405, 'error saving model');  } 

\exception basic php exception class yii2 exceptions inherited