From 919aff329ee1bd214831095e4d96af71795ed572 Mon Sep 17 00:00:00 2001
From: Marko Tibold <marko@tibold.nl>
Date: Fri, 7 Dec 2012 00:08:27 +0100
Subject: [PATCH] Fix AttributeError caused by accessing a non-existing
 default_keys attribute.

---
 rest_framework/serializers.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/rest_framework/serializers.py b/rest_framework/serializers.py
index 984f3ac57..43bfda83b 100644
--- a/rest_framework/serializers.py
+++ b/rest_framework/serializers.py
@@ -123,7 +123,7 @@ class BaseSerializer(Field):
         Returns the fieldnames that should not be validated.
         """
         excluded_fields = list(self.opts.exclude)
-        for field in self.fields.keys() + self.default_fields.keys():
+        for field in self.fields.keys() + self.get_default_fields().keys():
             if self.opts.fields:
                 if field not in self.opts.fields + self.opts.exclude:
                     excluded_fields.append(field)