# 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;
our $VERSION = '7.900033'; # VERSION
has 'mixin' => 1;
has 'field' => 1;
has 'multi' => 1;
has 'dependencies' => sub {{
normalization => ['filters'],
validation => ['value']
}};
sub after_validation {
my ($self, $proto, $field, $param) = @_;
# override parameter value if default exists
if (defined $field->{default} && ! defined $param) {
my $context = $proto->stash->{'validation.context'};
my $name = $field->name;
my $value = isa_coderef($field->{default}) ?
$field->{default}->($context, $proto) :
$field->{default}
;
$proto->params->add($name, $value);
}
return $self;
}
sub before_validation {
my ($self, $proto, $field, $param) = @_;
# override parameter value if default exists
if (defined $field->{default} && ! defined $param) {
my $context = $proto->stash->{'validation.context'};
my $name = $field->name;
my $value = isa_coderef($field->{default}) ?
$field->{default}->($context, $proto) :
$field->{default}
;
$proto->params->add($name, $value);
}
return $self;
}
sub normalize {
my ($self, $proto, $field, $param) = @_;
# override parameter value if default exists
if (defined $field->{default} && ! defined $param) {
my $context = $proto->stash->{'normalization.context'};
my $name = $field->name;
my $value = isa_coderef($field->{default}) ?
$field->{default}->($context, $proto) :
$field->{default}
;
$proto->params->add($name, $value);
}
return $self;
}
1;
__END__
=pod
=head1 NAME
Validation::Class::Directive::Default - Default Directive for Validation Class Field Definitions
=head1 VERSION
version 7.900033
=head1 SYNOPSIS
use Validation::Class::Simple;
my $rules = Validation::Class::Simple->new(
fields => {
access_code => {
default => 'demo123'
}
}
);
# 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.
=over 8
=item * alternative argument: a-coderef-returning-a-default-value
This directive can be passed a single value or a coderef which should return
the value to be used as the default value:
fields => {
access_code => {
default => sub {
my $self = shift; # this coderef will receive a context object
return join '::', lc __PACKAGE__, time();
}
}
}
=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