def add_to_cart(request, ceph_obj_id, quantity=1):
# product = CephDataObject.objects.get(id=ceph_obj_id)
print '*' * 10
print 'add_to_cart'
product = CephDataObject.objects.get(id=ceph_obj_id)
print 'product:', product
cart = CartProxy(request)
cart.add(product, compute_price(product.data_class), quantity)
