package Catmandu::Fix::retain_field;
use Catmandu::Sane;
use Moo;
with 'Catmandu::Fix::Base';
has path => (is => 'ro', required => 1);
around BUILDARGS => sub {
my ($orig, $class, $path) = @_;
$orig->($class, path => $path);
};
sub emit {
my ($self, $fixer) = @_;
my $path = $fixer->split_path($self->path);
my $key = pop @$path;
$fixer->emit_walk_path($fixer->var, $path, sub {
my $var = shift;
$fixer->emit_retain_key($var, $key);
});
}
=head1 NAME
Catmandu::Fix::retain_field - delete everything from a field except
=head1 SYNOPSIS
# Delete every key from foo except bar
retain_field('foo.bar');
=head1 SEE ALSO
L<Catmandu::Fix>
=cut
1;