I am running 3.4.4 and on the Cart page where the coupon field is located I would like to make it "disappear" after a coupon is entered and Display a message telling them that a coupon has already been applied to this order.
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Once again never mind, I got it. I just checked the cart_total.tpl file to see how IT was checking for a coupon.
Here how I changed the call to the coupon in the cart.tpl file if anyone is interested.
Code:
{if $cart.coupon_discount ne 0}
A coupon code has already been used on this order
{else}
{if $active_modules.Discount_Coupons ne ""}
{include file="modules/Discount_Coupons/add_coupon.tpl}
{/if}
{/if}