public function actionDeleteDevice()
 {
     $id = Yii::$app->request->get('id');
     if (isset($id) and !empty($id)) {
         $device = Device::findOne($id);
         $device ? $device->delete() : '';
     }
     Yii::$app->session->setFlash('message', 'Delete Success !');
     return $this->redirect([Url::to('list-device')]);
 }
 public function fundDeviceSysnImei($sys_n, $imei)
 {
     if (($model = Device::findOne(['sys_n' => $sys_n, 'imei' => $imei])) !== null) {
         return $model;
     } else {
         throw new NotFoundHttpException('The requested page does not exist.');
     }
 }
 /**
  * Finds the Device model based on its primary key value.
  * If the model is not found, a 404 HTTP exception will be thrown.
  * @param integer $id
  * @return Device the loaded model
  * @throws NotFoundHttpException if the model cannot be found
  */
 protected function findModel($id)
 {
     if (($model = Device::findOne($id)) !== null) {
         return $model;
     } else {
         throw new NotFoundHttpException('The requested page does not exist.');
     }
 }