I've just finished updating the code to handle all of this. Here's an example from the docs:

  package My::Date::Handler;

  use My::Date;

  sub new {
      my ($class, $cgi) = @_;
      my $month = $cgi->raw_param('month');
      my $day   = $cgi->raw_param('day');
      my $year  = $cgi->raw_param('year');
      return My::Date->new(
        month => $month,
        day   => $day,
        year  => $year,
      );
  }

  1;
[download]

And in the user's code:

  use Class::CGI
    handlers => {
      date => 'My::Date::Handler',
    };

  my $cgi  = Class::CGI->new;
  my $date = $cgi->param('date');
  my $day  = $date->day;
[download]

It's not uploaded anywhere yet, though. I'll wait for more suggestions. I must say, it's really nice to see how clean design of classes makes extending them so easy :)

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