public function actionTopic($id = null) { if ($id) { $model = Topic::findOne(['topic_id' => $id]); if ($model) { return $this->render('topic', ['model' => $model]); } else { return "No Id"; //return $this->goBack(); } } else { $str = $_GET; return var_dump($str); //return $this->goBack(); } }
/** * Finds the Topic model based on its primary key value. * If the model is not found, a 404 HTTP exception will be thrown. * @param integer $id * @param integer $Category_id * @return Topic the loaded model * @throws NotFoundHttpException if the model cannot be found */ protected function findModel($id, $Category_id) { if (($model = Topic::findOne(['id' => $id, 'Category_id' => $Category_id])) !== null) { return $model; } else { throw new NotFoundHttpException('The requested page does not exist.'); } }