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package HTML::FormFu::Constraint::Number;
use Moose;
extends 'HTML::FormFu::Constraint';
use Scalar::Util qw( looks_like_number );
sub constrain_value {
    my ( $self, $value ) = @_;
    return 1 if !defined $value || $value eq '';
    my $ok = looks_like_number($value);
    return $self->not ? !$ok : $ok;
}
__PACKAGE__->meta->make_immutable;
1;
__END__
HideShow 25 lines of Pod
=head1 NAME
HTML::FormFu::Constraint::Number - Numerical Constraint
=head1 DESCRIPTION
The input must be a number.
=head1 SEE ALSO
Is a sub-class of, and inherits methods from L<HTML::FormFu::Constraint>
L<HTML::FormFu>
=head1 AUTHOR
Carl Franks C<cfranks@cpan.org>
=head1 LICENSE
This library is free software, you can redistribute it and/or modify it under
the same terms as Perl itself.
=cut