NAME

       HTML::FormFu::Constraint::Callback - Code Callback Constraint

SYNOPSIS

           $field->constraint({
               type => 'Callback',
               callback => \&foo,
           });

           ---
           elements:
             - type: Text
               name: foo
               constraints:
                 - type: Callback
                   callback: "main::my_constraint"

           sub foo {
               my ( $value, $params ) = @_;

               # return true or false
           }

DESCRIPTION

       The first argument passed to the callback is the submitted value for the associated field.
       The second argument passed to the callback is a hashref of name/value pairs for all input
       fields.

       This constraint doesn't honour the "not()" value.

METHODS

   callback
       Arguments: \&code-reference

       Arguments: "subroutine-name"

SEE ALSO

       Is a sub-class of, and inherits methods from HTML::FormFu::Constraint

       HTML::FormFu

AUTHOR

       Carl Franks "cfranks@cpan.org"

LICENSE

       This library is free software, you can redistribute it and/or modify it under the same
       terms as Perl itself.