/** * Updates an existing Books model. * If update is successful, the browser will be redirected to the 'view' page. * @param integer $id * @return mixed */ public function actionUpdate($id) { $authors = Authors::getAuthorsForDropDownList(); $model = $this->findModel($id); //Request from form if (Yii::$app->request->isPost) { $model->load(Yii::$app->request->post()); $model->cover = UploadedFile::getInstance($model, 'cover'); if ($model->save()) { $absoluteUrl = Yii::$app->session->has('absoluteUrl') ? Yii::$app->session->get('absoluteUrl') : Yii::$app->urlManager->createUrl("books"); return $this->redirect($absoluteUrl); } } //Render update form return $this->render('update', ['model' => $model, 'authors' => $authors]); }