From ac4d8e3f45557df9d28c5cf3558d463e82ed62fb Mon Sep 17 00:00:00 2001
From: Eric Yu <eyu@boltthreads.com>
Date: Mon, 6 Jun 2016 20:11:22 -0700
Subject: [PATCH] Let serializers have empty field lists

Currently, `fields = ()` in a serializer doesn't work because `get_serializer_fields` returns `None`
---
 rest_framework_json_api/utils.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/rest_framework_json_api/utils.py b/rest_framework_json_api/utils.py
index 261640c6..1bde5ff1 100644
--- a/rest_framework_json_api/utils.py
+++ b/rest_framework_json_api/utils.py
@@ -77,7 +77,7 @@ def get_serializer_fields(serializer):
         fields = getattr(serializer, 'fields')
         meta = getattr(serializer, 'Meta', None)
 
-    if fields:
+    if fields is not None:
         meta_fields = getattr(meta, 'meta_fields', {})
         for field in meta_fields:
             try: