Adding extra submit handler for checkout pane

Hi all,

I have a checkout pane for customer billing information and I'm trying to add an additional validate + submit handler for it to allow me to verify the address via a 3rd party service. At the moment, I can do something like:

$checkout_panes['customer_profile_billing']['callbacks']['checkout_form_submit'] = 'mymodule_customer_profile_billing_form_submit';

This triggers the function defined, but seems to replace the original submit handler which means I lose my data when I hit the payment page.

Posted: Sep 24, 2012
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