my $d_orders = $self->order->linked_records(direction => 'to', to => 'SL::DB::DeliveryOrder');
my @doi = grep { $_->parts_id == $self->parts_id } map { $_->orderitems } @$d_orders;
my $d_orders = $self->order->linked_records(direction => 'to', to => 'SL::DB::DeliveryOrder');
my @doi = grep { $_->parts_id == $self->parts_id } map { $_->orderitems } @$d_orders;