/**
* @return \yii\db\ActiveQuery
*/
public function getSalesDetails()
{
return $this->hasMany(SaleDetail::className(), ['sale_id' => 'id']);
}
/**
* Updates an existing Sale 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);
$modelDetails = $model->getSalesDetails()->all();
if ($model->load(Yii::$app->request->post())) {
$oldModelDetails = array();
foreach ($modelDetails as $modelDetail) {
$oldModelDetails[$modelDetail->id] = ['item_id' => $modelDetail->item_id, 'quantity' => $modelDetail->quantity];
}
$oldIDs = ArrayHelper::map($modelDetails, 'id', 'id');
$modelDetails = Model::createMultiple(SaleDetail::classname(), $modelDetails);
Model::loadMultiple($modelDetails, Yii::$app->request->post());
$deletedIDs = array_diff($oldIDs, array_filter(ArrayHelper::map($modelDetails, 'id', 'id')));
// validate all models
$valid = $model->validate() & Model::validateMultiple($modelDetails);
if ($valid) {
$transaction = \Yii::$app->db->beginTransaction();
try {
if ($flag = $model->save(false)) {
if (!empty($deletedIDs)) {
if ($flag = SaleDetail::deleteAll(['id' => $deletedIDs]) > 0) {
foreach ($deletedIDs as $id) {
$item = Item::findOne($oldModelDetails[$id]['item_id']);
$item->stock += $oldModelDetails[$id]['quantity'];
if (!($flag = $item->save())) {
$transaction->rollBack();
break;
}
}
} else {
$transaction->rollBack();
}
}
if ($flag) {
foreach ($modelDetails as $modelDetail) {
$quantity = $modelDetail->quantity;
if (!empty($modelDetail->id) && $modelDetail->item_id == $oldModelDetails[$modelDetail->id]['item_id']) {
$quantity -= $oldModelDetails[$modelDetail->id]['quantity'];
}
$modelDetail->sale_id = $model->id;
if (($flag = $modelDetail->save(false)) && $quantity !== 0) {
$item = Item::findOne($modelDetail->item_id);
$item->stock -= $quantity;
$flag = $item->save();
}
if (!$flag) {
$transaction->rollBack();
break;
}
}
}
}
if ($flag) {
$transaction->commit();
return $this->redirect(['index']);
}
} catch (Exception $e) {
$transaction->rollBack();
}
}
}
return $this->render('update', ['model' => $model, 'modelDetails' => empty($modelDetails) ? [new SaleDetail()] : $modelDetails]);
}