Error: Call to undefined method DatabaseStatementBase::fetchArray() in uc_discounts_get_discounts_for_order()

[nattywebdev]

When trying to add an item to the cart that has a discount applied, I am seeing the following error after the message '[product] added to your shopping cart':

Error: Call to undefined method DatabaseStatementBase::fetchArray() in uc_discounts_get_discounts_for_order() (line 1637 of /<my-site>/web/modules/uc_discounts/uc_discounts.module).

Is this a bug or perhaps something I've done wrong?

I'm using Backdrop 1.25.1 and ubercart 1.x-3.14.1 with uc_discounts 1.x-2.0.5.

[nattywebdev]

On further investigation I found this appears to be caused by setting Max uses per user to anything other than the default of 0. I had it set to 1. Reset to 0 and the error goes away.

[bugfolder]

Glad there's a workaround, but that's still a bug (that function doesn't exist in Backdrop). Will look into it.

[argiepiano]

I believe fetchArray should be replaced by fetchAssoc(), but I haven't tested this

[bugfolder]

Actually, fetchField() will be cleaner. I'm working on this now, made the fix, just testing it.