HTML::Widget::Constraint::Callback(3) User Contributed Perl Documentation HTML::Widget::Constraint::Callback(3)
 

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.

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

perform the actual validation.

Sebastian Riedel, "[email protected]"
Marcus Ramberg, "[email protected]"

This library is free software, you can redistribute it and/or modify it under the same terms as Perl itself.
2007-03-01 perl v5.29.6