sub svcpart {
my $self = shift;
- my $svcdb = shift;
- my @pkg_svc = $self->pkg_svc;
- return '' if scalar(@pkg_svc) != 1
- || $pkg_svc[0]->quantity != 1
- || ( $svcdb && $pkg_svc[0]->part_svc->svcdb ne $svcdb );
+ my $svcdb = scalar(@_) ? shift : '';
+ my @pkg_svc = grep {
+ $_->quantity == 1
+ && ( $svcdb eq $_->part_svc->svcdb || !$svcdb )
+ } $self->pkg_svc;
+ return '' if scalar(@pkg_svc) != 1;
$pkg_svc[0]->svcpart;
}