Merge pull request #446 from ezawadzki/issue-445

Check if 'descendants' list has values
deschler · Jan 26, 2018 · 8ec460b · 8ec460b
2 parents 817fc04 + 5f2576e
commit 8ec460b
Showing 1 changed file with 4 additions and 3 deletions.
diff --git a/modeltranslation/translator.py b/modeltranslation/translator.py
@@ -466,9 +466,10 @@ def register(self, model_or_iterable, opts_class=None, **options):
                 else:
                     descendants = [d.__name__ for d in self._registry.keys()
                                    if issubclass(d, model) and d != model]
-                    raise DescendantRegistered(
-                        'Model "%s" cannot be registered after its subclass'
-                        ' "%s"' % (model.__name__, descendants[0]))
+                    if descendants:
+                        raise DescendantRegistered(
+                            'Model "%s" cannot be registered after its subclass'
+                            ' "%s"' % (model.__name__, descendants[0]))
 
             # Find inherited fields and create options instance for the model.
             opts = self._get_options_for_model(model, opts_class, **options)