/**
* Checks if item is configurable
*
* @param Mage_Sales_Model_Quote_Address_Item|Mage_Sales_Model_Quote_Item|Mage_Sales_Model_Order_Creditmemo_Item|Mage_Sales_Model_Order_Invoice_Item $item
* @return bool
*/
protected function _isConfigurable($item)
{
if ($item instanceof Mage_Sales_Model_Quote_Item) {
return $item->getProductType() === Mage_Catalog_Model_Product_Type::TYPE_CONFIGURABLE;
}
if ($item instanceof Mage_Sales_Model_Quote_Address_Item) {
return $item->getProduct()->getTypeId() === Mage_Catalog_Model_Product_Type::TYPE_CONFIGURABLE;
}
if ($item instanceof Mage_Sales_Model_Order_Invoice_Item || $item instanceof Mage_Sales_Model_Order_Creditmemo_Item) {
return $item->getOrderItem()->getProductType() === Mage_Catalog_Model_Product_Type::TYPE_CONFIGURABLE;
}
return false;
}
