I created a project ([url removed, login to view]) and hired a programmer to edit my Prestashop website so that width and height are calculated based on width and height of the buyer's painting. Some of his code seems to work but when you add the product to the cart, the price does not show to the right on the cart section (it shows $0). Also when you add the same product to the cart again but with different dimensions, the price shown in the cart is incorrect. The second product erases the information from the first product in the cart. You can see the error by going to:
[url removed, login to view]
My programmer says that the issue is because when we add a product to the cart, its id is added to the cart_product table. Can you fix this?