describe locations only with groups that have can_describe set

src/c3nav/mapdata/models/locations.py

@@ -166,6 +166,7 @@ class SpecificLocation(Location, models.Model):
     @property
     def subtitle(self):
         groups = tuple(self.groups.all() if 'groups' in getattr(self, '_prefetched_objects_cache', ()) else ())
+        groups = tuple(group.can_describe for group in groups)
         return groups[0].title if groups else self.__class__._meta.verbose_name
 
     @cached_property