I know this is against the main purpose of a "cart," but I would like to restrict the ability of a user to add more than 1 product to their cart.
With my store, although they choose from a few products, each customer will only ever buy 1 product at a time, so I want to make sure they aren't able to add more than one to their cart to avoid problems.
I've figured out how to set a maximum quantity, which restricts users from adding more than one OF THE SAME product, but they can still add multiple different products.
A long story short... how to only ever allow ONLY ONE product in the cart? Right now I have 4 total products all in the same category if that helps.
Thanks
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