[html-formfu] Patch to allow to provide a callback to "when" inside a Constraint

[Carl Franks]

2008/5/26 Michele Beltrame <mb at italpro.net>:
> Hi all!
>
> Attached is a small patch for HTML/FormFu/Constraint.pm which allows to
> use a callback for "when" checks inside a constraint. This should allow
> more complex control (i.e. based on multiple fields, external data, etc...)
> on when the constraint is applied:

> I'll provide tests if patch is considered a good idea to merge. ;-)

I like it - once you've written a test + docs, feel free to commit it

Thanks!
Carl