Which hook reliably triggers on "Add to Cart" [PS8/9]

[DARKF3D3]

Hi everyone,
I'm developing a custom module that tracks product views, sales, and add-to-cart events to calculate dynamic relevance scores.

The goal is to increment a counter every time a product is added to the cart.

I've already tried the following hooks:
actionObjectCartAddAfter → only triggers when the cart is first created (i.e. first product added)
actionCartSave → doesn't trigger on AJAX add-to-cart
actionCartUpdateQuantityAfter → never triggered during cart updates
actionProductAddToCartLinkAfter → never triggered either

None of these hooks seem to fire consistently when a product is added to the cart.

Is there a hook in PrestaShop 8/9 that is triggered every time a product is added to the cart?

Thanks in advance!

[wepresta]

Hi,

In PS 8/9 there isn’t a single “add_to_cart” hook that fires only for that action. The most reliable one is:

actionCartUpdateQuantityAfter
It is triggered from Cart::updateQty() for every add/update/remove (including AJAX add-to-cart).

To count only real “adds”, filter the params, for example:

• operator = up
• quantity > 0
• use id_product / id_product_attribute

If you want “first time this product is added” (not quantity increase), you need to compare with the previous quantity (or check if the product was already in cart_product before the update).

This hook is the one most modules use for consistent tracking in PS 1.7/8/9.