Bug in Custom Field Calculation

Back with another complicated problem.

We are trying to set up a discount that kicks in when you register for a certain number of events. For example:


Once they sign up for at least 4 weeks of camp, the discount kicks in. I could find no way to automate this. Discount bundles don't work because we are asking them to sign-up one kid a time.

My solution was to create a custom field where they select how many weeks they are signing up for in total for their family:


I've run into a problem with the logic of the field. It seems to only apply itself to the first item in the cart and not the price of the cart as a whole.

If I have this in my cart:


It works fine as long as the fee subtraction doesn't go below that item:


Once the fee discount goes to -250, I get this:


If I add another item that costs $200 to my cart, I end up in situations like this where instead of subtracting from the total, it's ADDING to it:

Hello Winston

Unfortunately, custom fee field will only be applied to the whole cart, not for individual events in the cart. So I think you will have to find a different setup (look complicated and I don't have the solution right now)

Tuan

OK, I understand it's a complicated setup, but isn't it doing the exact opposite of what you're saying, it's not applying to the whole cart, it's only applying to an individual event?

Tuan,

I tried using the coupons instead and they don't seem to work correctly either. I have 11 items in my cart and when I apply a coupon that is set up to discount $250, I get this instead:

Hello Winston

When you use coupon code, the system will give discount for every item in cart (discount amount * quantity), so that won't work, too

If you use coupon code solution, I think you will still have to customize code in the file components/com_eventbooking/helper/registration.php , method calculateCartRegistrationFee so that the discount amount will be applied to whole registration, not to individual event in cart like how it works by default

Tuan