HTML::FormFu::Filter::Callback - filter with custom subroutine

       Carl Franks <cpan@fireartist.com>

       This software is copyright (c) 2018 by Carl Franks.

       This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5
       programming language system itself.

perl v5.38.2                                       2024-04-10                HTML::FormFu::Filter::Callback(3pm)

       Filter using a user-provided subroutine.

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

callback
       Arguments: \&code-reference

       Arguments: "subroutine-name"

       HTML::FormFu::Filter::Callback - filter with custom subroutine

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

           ---
           elements:
             - type: Text
               name: foo
               filters:
                 - type: Callback
                   callback: "main::my_filter"

           sub my_filter {
               my ($value) = @_;

               # do something to $value

               return $value;
           }

       version 2.07