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.

1 files changed, 1 insertions, 1 deletions

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')