/** * 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('Запрашиваемая страница не существует.'); } }