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package HTML::FormFu::Constraint::Repeatable::Any;
use Moose;
extends 'HTML::FormFu::Constraint';
use Scalar::Util qw( reftype );
use Carp qw( croak );
after BUILD => sub {
my $self = shift;
$self->only_on_reps([1]);
return;
};
sub process {
my ( $self, $params ) = @_;
return unless $self->_run_this_rep;
# check when condition
return if !$self->_process_when($params);
my $field = $self->field;
my $repeatable = $field->get_parent({ type => 'Repeatable' });
my $pass;
my $original_name = $field->original_name || '';
my @fields =
grep { $_->get_parent({ type => 'Repeatable' }) == $repeatable }
grep { ( $_->original_name || '' ) eq $original_name }
@{ $repeatable->get_fields };
my $increment_field_names = $repeatable->increment_field_names;
for my $f (@fields) {
my $value;
if ( $increment_field_names ) {
$value = $self->get_nested_hash_value( $params, $f->nested_name );
}
else {
$value = _find_this_field_value( $self, $f, $repeatable, $params );
}
my $ok = eval { $self->constrain_value($value) };
if ( $ok && !$@ ) {
$pass = 1;
last;
}
}
return $self->mk_errors( {
pass => $pass,
} );
}
sub _find_this_field_value {
my ( $self, $field, $repeatable, $params ) = @_;
my $nested_name = $field->nested_name;
my $value = $self->get_nested_hash_value( $params, $nested_name );
my @fields_with_this_name = @{ $repeatable->get_fields({ nested_name => $nested_name }) };
if ( @fields_with_this_name > 1 ) {
my $index;
for ( my $i=0; $i <= $#fields_with_this_name; ++$i ) {
if ( $fields_with_this_name[$i] eq $field ) {
$index = $i;
last;
}
}
croak 'did not find ourself - how can this happen?'
if !defined $index;
if ( reftype($value) eq 'ARRAY' ) {
$value = $value->[$index];
}
elsif ( $index == 0 ) {
# keep $value
}
else {
undef $value;
}
}
return $value;
}
sub constrain_value {
my ( $self, $value ) = @_;
return defined $value && length $value;
}
__PACKAGE__->meta->make_immutable;
1;
__END__
=head1 NAME
HTML::FormFu::Constraint::Repeatable::Any - Ensure at least 1 of a repeated field is filled-in
=head1 SYNOPSIS
elements:
- type: Repeatable
elements:
- name: foo
constraints:
- type: Repeatable::Any
=head1 DESCRIPTION
Ensure at least 1 of a repeated field is filled-in.
Any error will be attached to the first repetition of the field.
This constraint doesn't honour the C<not()> value.
=head1 SEE ALSO
Is a sub-class of, and inherits methods from 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.
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