Ticket #16465: admin-history_view.patch

django/contrib/admin/options.py

@@ -1242 +1242 @@
     def history_view(self, request, object_id, extra_context=None):
         "The 'history' admin view for this model."
         from django.contrib.admin.models import LogEntry
+        import inspect
         model = self.model
         opts = model._meta
         app_label = opts.app_label
+        ct_set = set()
+        for m in inspect.getmro(model):
+            try:
+                ct = ContentType.objects.get_for_model(m)
+                ct_set.add(ct.id)
+            except:
+                pass
         action_list = LogEntry.objects.filter(
             object_id = object_id,
-            content_type__id__exact = ContentType.objects.get_for_model(model).id
+            content_type__id__in = ct_set
         ).select_related().order_by('action_time')
         # If no history was found, see whether this object even exists.
         obj = get_object_or_404(model, pk=unquote(object_id))