Re: Example of complex constraint with HTML::FormValidator

[buckaduck]

In general, I'd try using something like:

constraints => {
  myfield => { 
    constraint => sub { return (checkField() ? 1 : 0) },
    params     => [qw(myfield, otherparam1, otherparam2)],
  },
  ...
}

...where you can either use a subroutine checkField() or replace it with a short test right there in the anonymous subroutine.

There is an example in the documentation for the module, but it uses a built-in validation routine rather than an anonymous subroutine...

buckaduck