package HTML::Widget::Constraint::ISODate;

use warnings;
use strict;
use base 'HTML::Widget::Constraint';
use DateTime::Format::Strptime;

my $format=DateTime::Format::Strptime->new(pattern=>'%F');

sub validate {
    my ($self,$value)=@_;

    my $val=$format->parse_datetime($value);

    return defined($val);
}

1;