/** * @return \yii\db\ActiveQuery */ public function getPoItems() { return $this->hasMany(PoItem::className(), ['po_id' => 'id']); }
/** * Updates an existing Po model. * If update is successful, the browser will be redirected to the 'view' page. * @param integer $id * @return mixed */ public function actionUpdate($id) { $model = $this->findModel($id); $modelsPoItem = $model->poItems; if ($model->load(Yii::$app->request->post())) { $oldIDs = ArrayHelper::map($modelsPoItem, 'id', 'id'); $modelsPoItem = Model::createMultiple(PoItem::className(), $modelsPoItem); Model::loadMultiple($modelsPoItem, Yii::$app->request->post()); $deletedIDs = array_diff($oldIDs, array_filter(ArrayHelper::map($modelsPoItem, 'id', 'id'))); // validate all models $valid = $model->validate(); $valid = Model::validateMultiple($modelsPoItem) && $valid; if ($valid) { $transaction = \Yii::$app->db->beginTransaction(); try { if ($flag = $model->save(false)) { if (!empty($deletedIDs)) { PoItem::deleteAll(['id' => $deletedIDs]); } foreach ($modelsPoItem as $modelPoItem) { $modelPoItem->po_id = $model->id; if (!($flag = $modelPoItem->save(false))) { $transaction->rollBack(); break; } } } if ($flag) { $transaction->commit(); return $this->redirect(['view', 'id' => $model->id]); } } catch (Exception $e) { $transaction->rollBack(); } } } else { return $this->render('update', ['model' => $model, 'modelsPoItem' => empty($modelsPoItem) ? [new PoItem()] : $modelsPoItem]); } }