How to catch Exception correctly?

Question

Yii

How to handle Exception so standard yii2 404 page appears?
Without creating your own class and so that processing is performed for all exceptions

try
            {
                $activeCategory = NewsCategory::find()
                        ->where(['name_en' => Yii::$app->request->get('category')])
                        ->one();
                $model = News::find()
                        ->where(['newsCategory_id' => $activeCategory->id]);
            } catch (Exception $ex) {
                /* */
            }

I am sure that my problem is easily solved, but in Google I find only articles on creating my handler

Answer 1

Add a slash before Exception in your code. Then it will work as you need.

} catch (\Exception $ex) {
    throw new NotFoundHttpException('Not found');
}

Answer 2

Did as you said, nothing has changed

Answer 3

Take away try,

$activeCategory = NewsCategory::find()
                        ->where(['name_en' => Yii::$app->request->get('category')])
                        ->one();
if(!$activeCategory) { // Или ошибка
  throw new NotFoundException(); 
}
$id = $activeCategory->id; // Иначе всё ок