From 0a77ff652fa3220fc96ac3e5b5f5d3d40ebe31cb Mon Sep 17 00:00:00 2001
From: Daniel Hahler <git@thequod.de>
Date: Fri, 5 Jan 2018 15:39:15 +0100
Subject: [PATCH] fields.get_attribute: return None for FK lookups

Ref: https://github.com/encode/django-rest-framework/pull/5708#issuecomment-355569737
---
 rest_framework/fields.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/rest_framework/fields.py b/rest_framework/fields.py
index ad710b967..94cd02426 100644
--- a/rest_framework/fields.py
+++ b/rest_framework/fields.py
@@ -98,6 +98,8 @@ def get_attribute(instance, attrs):
                 instance = instance[attr]
             else:
                 instance = getattr(instance, attr)
+                if instance is None:
+                    return None
         except ObjectDoesNotExist:
             return None
         if is_simple_callable(instance):