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|
package HTML::FormFu::Constraint::Equal;
use strict;
use base 'HTML::FormFu::Constraint::_others';
use HTML::FormFu::Util qw(
DEBUG_CONSTRAINTS
debug
);
use List::MoreUtils qw( all );
our $EMPTY_STR = q{};
sub process {
my ( $self, $params ) = @_;
# check when condition
return if !$self->_process_when($params);
my $others = $self->others;
return if !defined $others;
my $value = $self->get_nested_hash_value( $params, $self->nested_name );
DEBUG_CONSTRAINTS && debug( VALUE => $value );
my @names = ref $others ? @{$others} : ($others);
my @failed;
my %values;
for my $name (@names) {
my $other_value = $self->get_nested_hash_value( $params, $name );
DEBUG_CONSTRAINTS && debug( NAME => $name, VALUE => $value );
my $ok = _values_eq( $value, $other_value );
if ( $self->not() ? $ok : !$ok ) {
push @failed, $name;
}
$values{$name} = $other_value;
}
# special case for $self->not()
# no errors if all values are empty
if ( $self->not() && all { !defined || $_ eq $EMPTY_STR } values %values ) {
return;
}
return $self->mk_errors( {
pass => @failed ? 0 : 1,
failed => \@failed,
names => [ $self->nested_name, @names ],
} );
}
sub _values_eq {
my ( $v1, $v2 ) = @_;
# the params should be coming from a CGI.pm compatible query object,
# so the value is either a string or an arrayref of strings
return 1 if !defined $v1 && !defined $v2;
return if !defined $v1 || !defined $v2;
if ( !ref $v1 && !ref $v2 ) {
return 1 if $v1 eq $v2;
}
elsif ( ( ref $v1 eq 'ARRAY' ) && ( ref $v2 eq 'ARRAY' ) ) {
return _arrays_eq( $v1, $v2 );
}
return;
}
sub _arrays_eq {
my @a1 = sort @{ $_[0] };
my @a2 = sort @{ $_[1] };
return if scalar @a1 != scalar @a2;
for my $i ( 0 .. $#a1 ) {
return if $a1[$i] ne $a2[$i];
}
return 1;
}
sub _localize_args {
my ($self) = @_;
return $self->parent->label;
}
1;
__END__
=head1 NAME
HTML::FormFu::Constraint::Equal - Multi-field Equality Constraint
=head1 SYNOPSIS
- type: Password
name: password
constraints:
- type: Equal
others: repeat_password
- type: Password
name: repeat_password
=head1 DESCRIPTION
All fields named in L<HTML::FormFu::Constraint::_others/others> must have an equal value to the field this
constraint is attached to.
=head1 SEE ALSO
Is a sub-class of, and inherits methods from
L<HTML::FormFu::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
|
