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# ABSTRACT: DependsOn Directive for Validation Class Field Definitions
package Validation::Class::Directive::DependsOn;
use strict;
use warnings;
use base 'Validation::Class::Directive';
use Validation::Class::Util;
our $VERSION = '7.900057'; # VERSION
has 'mixin' => 1;
has 'field' => 1;
has 'multi' => 1;
has 'message' => '%s requires %s';
sub validate {
my $self = shift;
my ($proto, $field, $param) = @_;
if (defined $field->{depends_on} && defined $param) {
my $specification = $field->{depends_on};
if ($field->{required} || $param) {
my $dependents = isa_arrayref($specification) ?
$specification : [$specification]
;
if (@{$dependents}) {
my @required_fields = ();
foreach my $dependent (@{$dependents}) {
my $field = $proto->fields->get($dependent);
push @required_fields, $field->label || $field->name
unless $proto->params->has($dependent)
;
}
if (my @r = @required_fields) {
my$list=(join(' and ',join(', ',@r[0..$#r-1])||(),$r[-1]));
$self->error(@_, $list);
}
}
}
}
return $self;
}
1;
__END__
=pod
=head1 NAME
Validation::Class::Directive::DependsOn - DependsOn Directive for Validation Class Field Definitions
=head1 VERSION
version 7.900057
=head1 SYNOPSIS
use Validation::Class::Simple;
my $rules = Validation::Class::Simple->new(
fields => {
password_confirmation => {
depends_on => 'password'
}
}
);
# set parameters to be validated
$rules->params->add($parameters);
# validate
unless ($rules->validate) {
# handle the failures
}
=head1 DESCRIPTION
Validation::Class::Directive::DependsOn is a core validation class field
directive that validates the existence of dependent parameters.
=over 8
=item * alternative argument: an-array-of-parameter-names
This directive can be passed a single value or an array of values:
fields => {
password2_confirmation => {
depends_on => ['password', 'password2']
}
}
=back
=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
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