Each of my products comes in one of two sizes, and therefore, one of two prices. I need to make choosing a size a requirement before adding to cart. Right now it is not, customer can just click 'add to cart' and a product with no price is added because a size was not selected.
How do I fix this? It seems my only choice in the attributes controller is to make each attribute required or not required when what i want is make the selection of ONE of the two a requirement. Maybe I'm making this more complicated then it has to be, but I'm stumped.
any help would be appreciated.
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