Partpicker: Nicht kaputtgehen ohne default part.

diff --git a/SL/Presenter/Part.pm b/SL/Presenter/Part.pm
index 599d093..fff9f5e 100644 (file)
--- a/SL/Presenter/Part.pm
+++ b/SL/Presenter/Part.pm
@@ -10,7 +10,7 @@ our @EXPORT = qw(part_picker);
 sub part_picker {
   my ($self, $name, $value, %params) = @_;
 
-  $value = SL::DB::Manager::Part->find_by(id => $value) if !ref $value;
+  $value = SL::DB::Manager::Part->find_by(id => $value) if $value && !ref $value;
   my $id = delete($params{id}) || $self->name_to_id($name);
 
   my $ret =