/** * Finds the Page model based on its primary key value. * If the model is not found, a 404 HTTP exception will be thrown. * @param string $id * @return Encyclopedia the loaded model * @throws NotFoundHttpException if the model cannot be found */ protected function findModel($id) { if (($model = Encyclopedia::findOne($id)) !== null) { return $model; } else { throw new NotFoundHttpException(Yii::t('app', 'The requested page does not exist.')); } }