OK my client wants to show a buy both feature in the cart, if they have 1 particular item type in the cart they want it to show up for another particular item type so if they buy both they can save $50 off the total. I am trying to wrap my head around what would be the best way to set this up so it couldn't be easily hacked (ie: adding both to the cart then removing one and keeping the discount)
does anyone have some general ideas in theory?
Thanks.
Why not perform the check right before they submit the order? that way, everytime they get to the submit order page, it will check if both items are present.