/** * Updates an existing Post model. * If update is successful, the browser will be redirected to the 'view' page. * @param integer $id * @return mixed */ public function actionUpdate($id) { $post = $this->findModel(['id' => $id]); $categories = Category::find()->orderBy('title')->all(); if ($post->load(Yii::$app->request->post()) && $post->save()) { return $this->redirect(['update', 'id' => $post->id]); } else { return $this->render('update', ['post' => $post, 'categories' => $categories]); } }