CiviCRM Community Forums (archive)

I'm trying to implement direct debit for my custom payment processor, implemented in a 'module' extension.

The civicrm core code that supports this (in the payment page form) doesn't seem to be well-documented, but since I thought I was starting from scratch here, it's nice to see this.

Of course, each payment processor is going to have different information to collect - in this case, it needs an extra selection of checking vs. savings account.

In my example, I've got both a cc and direct debit payment processors enabled for a contribution page, so it does some nice ajaxy updating of those fields.

Unfortunately, I've tried adding my new field in buildForm hook (at which point, I can see that the form object itself has added these fields), but it seems to have no effect.

I've tried adding them naively with the standard quickform method, but when I look in the core code, I can see there's some fancy non-quickform-standard stuff going on, so I also tried adding an extra element to the form->_paymentFields, which is what what core seems to do. Neither has any effect.

I suspect there's some other form operation I have to do to rebake those fields into the actual form that gets pulled out via ajax?

Hmm, I think I might have to overwrite a template as well...