From 321133242f40e18b3d7564a43a3b515c17f3e40c Mon Sep 17 00:00:00 2001
From: Tom Christie <tom@tomchristie.com>
Date: Wed, 24 Jun 2015 14:24:19 +0100
Subject: [PATCH] Unsaved file objects may not have an associated URL.

---
 rest_framework/fields.py | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/rest_framework/fields.py b/rest_framework/fields.py
index ff6db703f..275c7a9a7 100644
--- a/rest_framework/fields.py
+++ b/rest_framework/fields.py
@@ -1198,8 +1198,12 @@ class FileField(Field):
         return data
 
     def to_representation(self, value):
+        if not value:
+            return None
+
         if self.use_url:
-            if not value:
+            if not getattr(value, 'url', None):
+                # If the file has not been saved it may not have a URL.
                 return None
             url = value.url
             request = self.context.get('request', None)