How To Make Cart Accept Only One Product (1.7.x)

[ZiedDams]

I want to make the Cart accept only one product in a way that:

when i add a product to the cart it erase the old one and put the new product in place ,

I actually found some content on this topic, But it's so old, And they give a solution that display an error in the front office if a user add more then one product to the cart, Which is not my case .

I know that i have to Override controllers/front/CartController.php

But i don't know what function i should modify and what to write in place

[Ress]

You can use the "actionCartUpdateQuantityBefore" hook, check in parameters which product is added to the cart, and if it is different, you can delete the current product. But I think it would be okay to delete directly through a query, not to use a method, so as not to call that hook again.

[ZiedDams]

16 hours ago, Ress said:

You can use the "actionCartUpdateQuantityBefore" hook, check in parameters which product is added to the cart, and if it is different, you can delete the current product. But I think it would be okay to delete directly through a query, not to use a method, so as not to call that hook again.

Thank you for this solution, yeah it's a good idea, without even overriding the CartController.php Great