From a439c80cd856f0661cb66003263c454c5108fe0b Mon Sep 17 00:00:00 2001
From: Tom Christie
Date: Sat, 21 Dec 2013 21:21:53 +0000
Subject: Less brittle through relationship testing.  Closes #1292.

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

(limited to 'rest_framework')

diff --git a/rest_framework/serializers.py b/rest_framework/serializers.py
index 28a09880..8351b3df 100644
--- a/rest_framework/serializers.py
+++ b/rest_framework/serializers.py
@@ -713,7 +713,9 @@ class ModelSerializer(Serializer):
             is_m2m = isinstance(relation.field,
                                 models.fields.related.ManyToManyField)
 
-            if is_m2m and not relation.field.rel.through._meta.auto_created:
+            if (is_m2m and
+                hasattr(relation.field.rel, 'through') and
+                not relation.field.rel.through._meta.auto_created):
                 has_through_model = True
 
             if nested:
-- 
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