/**
* Method is invoked before save
*
* @param \Magento\Framework\DataObject $object
* @return \Magento\Eav\Model\Entity\Attribute\Backend\AbstractBackend
*/
public function beforeSave($object)
{
if ($object->getCreditmemo()) {
$object->setParentId($object->getCreditmemo()->getId());
}
return parent::beforeSave($object);
}
/**
* Getting all available children for Invoice, Shipment or CreditMemo item
*
* @param \Magento\Framework\DataObject $item
* @return array|null
*/
public function getChildren($item)
{
$itemsArray = [];
$items = null;
if ($item instanceof \Magento\Sales\Model\Order\Invoice\Item) {
$items = $item->getInvoice()->getAllItems();
} elseif ($item instanceof \Magento\Sales\Model\Order\Shipment\Item) {
$items = $item->getShipment()->getAllItems();
} elseif ($item instanceof \Magento\Sales\Model\Order\Creditmemo\Item) {
$items = $item->getCreditmemo()->getAllItems();
}
if ($items) {
foreach ($items as $value) {
$parentItem = $value->getOrderItem()->getParentItem();
if ($parentItem) {
$itemsArray[$parentItem->getId()][$value->getOrderItemId()] = $value;
} else {
$itemsArray[$value->getOrderItem()->getId()][$value->getOrderItemId()] = $value;
}
}
}
if (isset($itemsArray[$item->getOrderItem()->getId()])) {
return $itemsArray[$item->getOrderItem()->getId()];
} else {
return null;
}
}
