From 410888517e77e9c7e8ac10d8e79f5f7e90459544 Mon Sep 17 00:00:00 2001
From: Jacek Tomaszewski <jacek.tomek@gmail.com>
Date: Sat, 9 Nov 2013 16:03:25 +0100
Subject: [PATCH] Fix abstract managers patching (close #212).

---
 modeltranslation/translator.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/modeltranslation/translator.py b/modeltranslation/translator.py
index bafdecd..91f8237 100644
--- a/modeltranslation/translator.py
+++ b/modeltranslation/translator.py
@@ -131,7 +131,9 @@ def add_manager(model):
 
     Custom managers are merged with MultilingualManager.
     """
-    for _, attname, cls in model._meta.concrete_managers:
+    if model._meta.abstract:
+        return
+    for _, attname, cls in model._meta.concrete_managers + model._meta.abstract_managers:
         current_manager = getattr(model, attname)
         if isinstance(current_manager, MultilingualManager):
             continue