HTML::Widget::Constraint::Callback - Callback Constraint my $c = $widget->constraint( 'Callback', 'foo' )->callback(sub { my $value=shift; return 1; }); A callback constraint which will only be run once for each submitted value of each named field.

callback

cb
Arguments: \&callback Define the callback to be used for validation. "cb" is an alias for "callback".

validate
perform the actual validation. Sebastian Riedel, "sri@oook.de" Marcus Ramberg, "mramberg@cpan.org" This library is free software, you can redistribute it and/or modify it under the same terms as Perl itself.