# ABSTRACT: Default Directive for Validation Class Field Definitions

package Validation::Class::Directive::Default;

use strict;
use warnings;

use base 'Validation::Class::Directive';

use Validation::Class::Util;

# VERSION


has 'mixin'        => 1;
has 'field'        => 1;
has 'multi'        => 1;
has 'dependencies' => sub {{
    normalization => ['filters'],
    validation    => ['value']
}};

sub after_validation {

    my ($self, $proto, $field, $param) = @_;

    # override parameter value if default exists

    if (defined $field->{default} && ! defined $param) {

        my $name = $field->name;

        $proto->params->add($name, $field->{default});

    }

    return $self;

}

sub before_validation {

    my ($self, $proto, $field, $param) = @_;

    # override parameter value if default exists

    if (defined $field->{default} && ! defined $param) {

        my $name = $field->name;

        $proto->params->add($name, $field->{default});

    }

    return $self;

}

sub normalize {

    my ($self, $proto, $field, $param) = @_;

    # override parameter value if default exists

    if (defined $field->{default} && ! defined $param) {

        my $name = $field->name;

        $proto->params->add($name, $field->{default});

    }

    return $self;

}

1;

__END__
=pod

=head1 NAME

Validation::Class::Directive::Default - Default Directive for Validation Class Field Definitions

=head1 VERSION

version 7.900002

=head1 SYNOPSIS

    use Validation::Class::Simple;

    my $rules = Validation::Class::Simple->new(
        fields => {
            user_role  => {
                default => 'client'
            }
        }
    );

    # set parameters to be validated
    $rules->params->add($parameters);

    # validate
    unless ($rules->validate) {
        # handle the failures
    }

=head1 DESCRIPTION

Validation::Class::Directive::Default is a core validation class field
directive that holds the value which should be used if no parameter is
supplied.

=head1 AUTHOR

Al Newkirk <anewkirk@ana.io>

=head1 COPYRIGHT AND LICENSE

This software is copyright (c) 2011 by Al Newkirk.

This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.

=cut