From 09b1de61967140d57df54b03617fdc47492e90a9 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?David=20Barrag=C3=A1n=20Merino?=
 <david.barragan@kaleidos.net>
Date: Mon, 30 Sep 2013 17:36:53 +0200
Subject: [PATCH] Created a backend filter to filter the queryset by
 project__memberships

---
 greenmine/base/filters.py | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/greenmine/base/filters.py b/greenmine/base/filters.py
index 5522b3ab..f586459f 100644
--- a/greenmine/base/filters.py
+++ b/greenmine/base/filters.py
@@ -28,3 +28,15 @@ class SimpleFilterBackend(filters.BaseFilterBackend):
             queryset = queryset.filter(**query_params)
 
         return queryset
+
+
+class IsProjectMemberFilterBackend(SimpleFilterBackend):
+    def filter_queryset(self, request, queryset, view):
+        queryset = super(IsProjectMemberFilterBackend, self).filter_queryset(
+                                                      request, queryset, view)
+        user = request.user
+
+        if user.is_authenticated():
+            queryset = queryset.filter(project__members=request.user)
+
+        return queryset