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package HTML::FormFu::Constraint::DependOn;
use strict;
our $VERSION = '2.05'; # VERSION
use Moose;
extends 'HTML::FormFu::Constraint';
with 'HTML::FormFu::Role::Constraint::Others';
use HTML::FormFu::Util qw(
DEBUG_CONSTRAINTS
debug
);
sub process {
my ( $self, $params ) = @_;
# check when condition
if ( !$self->_process_when($params) ) {
DEBUG_CONSTRAINTS && debug('fail when() check - skipping constraint');
return;
}
my $others = $self->others;
if ( !defined $others ) {
DEBUG_CONSTRAINTS && debug('no others() - skipping constraint');
return;
}
my @names = ref $others ? @{$others} : ($others);
my @failed;
my $value = $self->get_nested_hash_value( $params, $self->nested_name );
if ( !$self->constrain_value($value) ) {
DEBUG_CONSTRAINTS && debug('no value - skipping constraint');
return;
}
for my $name (@names) {
my $value = $self->get_nested_hash_value( $params, $name );
my $ok = 0;
if ( ref $value eq 'ARRAY' ) {
my @err = eval { $self->constrain_values( $value, $params ) };
$ok = 1 if !@err && !$@;
}
else {
$ok = eval { $self->constrain_value($value) };
$ok = 0 if $@;
}
if ( !$ok ) {
push @failed, $name;
}
}
return $self->mk_errors( {
pass => @failed ? 0 : 1,
failed => \@failed,
names => [ $self->nested_name, @names ],
} );
}
sub constrain_value {
my ( $self, $value ) = @_;
return 0 if !defined $value || $value eq '';
return 1;
}
sub _localize_args {
my ($self) = @_;
return $self->parent->label;
}
__PACKAGE__->meta->make_immutable;
1;
__END__
=head1 NAME
HTML::FormFu::Constraint::DependOn - Multi-field Dependency Constraint
=head1 VERSION
version 2.05
=head1 SYNOPSIS
type: DependOn
name: foo
others: bar
=head1 DESCRIPTION
If a value is submitted for the field this constraint is attached to, then a
value must also be submitted for all fields named in
L<HTML::FormFu::Role::Constraint::Others/others>.
By default, if any of the named fields in
L<HTML::FormFu::Role::Constraint::Others/others> are missing, an error will be
attached to each missing field. This behaviour can be changed by setting
any of L<HTML::FormFu::Role::Constraint::Others/attach_errors_to_base>,
L<HTML::FormFu::Role::Constraint::Others/attach_errors_to_others> or
L<HTML::FormFu::Role::Constraint::Others/attach_errors_to>.
This constraint doesn't honour the C<not()> value.
=head1 SEE ALSO
Is a sub-class of, and inherits methods from
L<HTML::FormFu::Role::Constraint::Others>, 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
|
