How to manually calculate the weight of configurable product

Question

i have the following problem: when I try to edit an order in Magento, on the initial loading of the edit page, Mage_Shipping_Model_Rate_Request::getPackageWeight() returns zero.This behaviour occurs only with configurable products.

My question is how can i calculate manually the total weight of the package. I am using Magento 1.7.0.2 CE. Thanks in advance!

Answer 1

The weight of quote items is calculated by the shipping total model Mage_Sales_Model_Quote_Address_Total_Shipping in the collect() method.

After the item weight is collected, the total model then calls $address->collectShippingRates(); to trigger the shipping rate calculation.

I suggest you look at the loop in the total model mentioned above, where it iterates over each item, to see why a configurable doesn't get a weight value assigned.

The only thing I can think of without further access is that maybe you have a sales rule in place that sets free_shipping on the quote item.

Before you wonder, the weight_type attribute is only used for bundled products to indicate if the total weight should be fixed or calculated dynamically from the associated products.