5. How to interact with the cart

Interacting with the cart is probably the single most important thing shop implementers will want to do: e.g. adding products to it, changing quantities, etc...

There are roughly two different ways to interact with the cart: through Ajax, or with more standard post-and-refresh behavior.

5.1. Updating the whole cart

The normal form POST method is pretty straightforward - you simply POST to the cart’s update URL (shop/cart/update/ by default) and pass it parameters as: update_item-<item id>=<new quantity> Items corresponding to the ID will be updated with the new quantity

5.2. Emptying the cart

Posting to shop/cart/delete empties the cart (the cart object is the same, but all cartitems are removed from it)