Satchmo: enhancing custom product module to enable file upload

Question

Hi,

I am using the Django-based e-commerce framework Satchmo. I need to make an enhancement to the store, so that the custom product module can accept file upload as one of the order inputs. I have been able to display the file upload input through the right template; I would like to know what minimum change should be done to the cart handler to make the uploaded file(s) part of the order.

I would also like to do this in a clean way - without modifying the original Satchmo distribution.

Any suggestions/thoughts are welcome.

Thanks, Angad