From 58e7bbc8ecad8016cc18f7dbd31b235cb515b785 Mon Sep 17 00:00:00 2001
From: Ofir Ovadia
Date: Wed, 4 Feb 2015 16:08:41 +0200
Subject: Prefetching the user object when getting the token in
 TokenAuthentication.

Since the user object is fetched 4 lines after getting Token from the database, this removes a DB query for each token-authenticated request.
---
 rest_framework/authentication.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'rest_framework')

diff --git a/rest_framework/authentication.py b/rest_framework/authentication.py
index 4832ad33..f7601fb1 100644
--- a/rest_framework/authentication.py
+++ b/rest_framework/authentication.py
@@ -167,7 +167,7 @@ class TokenAuthentication(BaseAuthentication):
 
     def authenticate_credentials(self, key):
         try:
-            token = self.model.objects.get(key=key)
+            token = self.model.objects.select_related('user').get(key=key)
         except self.model.DoesNotExist:
             raise exceptions.AuthenticationFailed('Invalid token')
 
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