From 4edb973418b6f5be42c258116eef37124c80e9c8 Mon Sep 17 00:00:00 2001
From: Dominik Kozaczko <dominik@dworkin>
Date: Wed, 17 Jul 2013 09:32:00 +0200
Subject: [PATCH] support filter_fields - adds compatibility with other filters

---
 rest_framework/filters.py | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/rest_framework/filters.py b/rest_framework/filters.py
index 201aefd7e..74f26a030 100644
--- a/rest_framework/filters.py
+++ b/rest_framework/filters.py
@@ -28,9 +28,16 @@ class SimpleDjangoFilterBackend(BaseFilterBackend):
     Really simple class that allows straightforward Django ORM filtering.
     """
     def filter_queryset(self, request, queryset, view):
+        filter_fields = getattr('filter_fields', view, None)
+        if filter_fields is None:
+            filter_fields = request.QUERY_PARAMS.keys()
+        # reduce relations to entry point only
+        fields = [field.split('__')[0] for field in filter_fields.keys()]
         params = {}
         for k, v in request.QUERY_PARAMS.iteritems():
-            params.update({k:v[0]})
+            # if entry point matches, collect the original key
+            if k.split('__')[0] in fields:
+                params.update({k: v[0]})
         return queryset.filter(**params)