/**
* 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);
//$modelsPoitems = $model->poitems; oh that error !!!
$modelsPoitems = Poitem::find()->where(['po_id' => $id])->all();
//it ture! :D
if ($model->load(Yii::$app->request->post()) && $model->save()) {
$oldIDs = ArrayHelper::map($modelsPoitems, 'id', 'id');
$modelsPoitems = Model::createMultiple(Poitem::classname(), $modelsPoitems);
Model::loadMultiple($modelsPoitems, Yii::$app->request->post());
$deletedIDs = array_diff($oldIDs, array_filter(ArrayHelper::map($modelsPoitems, 'id', 'id')));
// validate all models
$valid = $model->validate();
$valid = Model::validateMultiple($modelsPoitems) && $valid;
if ($valid) {
$transaction = \Yii::$app->db->beginTransaction();
try {
if ($flag = $model->save(false)) {
if (!empty($deletedIDs)) {
Poitem::deleteAll(['id' => $deletedIDs]);
}
foreach ($modelsPoitems 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' => $model, 'modelsPoitems' => empty($modelsPoitems) ? [new Poitem()] : $modelsPoitems]);
}
}
