The cwcfp_check_cart_quantities filter allows you to modify the quantities of a field that is shown.
There are four attributes passed to the filter:
- $qty_sum - the quantity of the field that will be displayed
- $id - the field ID
- $field - all of the settings for the field. This can retrieve data such as product IDs, whether or not the field is repeatable, etc.
- $cart_data - provides information on the specific products, variations, etc. that are in the customer's cart.