[Catalyst] using $c in my formvalidation

[Wijnand Wiersma]

I am using Data::FormValidator in one of my controllers. I have the full 
configuration in the BEGIN part of the controller file.
I want to check if the user has a valid country code so I added a 
constraint which calls back to a function I have. That function tries to 
use the Countrycodes model I have in my catalyst app. However, that 
validation function expects ($self, $c, $countrycode) but I cannot give 
that as param for the validation functions since $c is not yet defined 
at that moment since the configuration of Data::FormValidator is in 
BEGIN. $self is not important, I can skip that (and I will).

Does anyone here know a nice and clean workaround for this?
If needed, I will produce some example code.

Wijnand