From a421e2a2088f5eeb7dc396809ce48d8f4eeb1baf Mon Sep 17 00:00:00 2001
From: Brittney Exline <bexline@edx.org>
Date: Wed, 5 Jun 2019 13:09:42 -0400
Subject: [PATCH] Fix call to is_jwt_authenticated when the request has no
 successful_authenticator attribute

---
 edx_rest_framework_extensions/__init__.py             |  2 +-
 .../auth/jwt/authentication.py                        | 11 +++++++----
 2 files changed, 8 insertions(+), 5 deletions(-)

diff --git a/edx_rest_framework_extensions/__init__.py b/edx_rest_framework_extensions/__init__.py
index 9447fcfe..4271a256 100644
--- a/edx_rest_framework_extensions/__init__.py
+++ b/edx_rest_framework_extensions/__init__.py
@@ -1,3 +1,3 @@
 """ edx Django REST Framework extensions. """
 
-__version__ = '2.3.0'  # pragma: no cover
+__version__ = '2.3.1'  # pragma: no cover
diff --git a/edx_rest_framework_extensions/auth/jwt/authentication.py b/edx_rest_framework_extensions/auth/jwt/authentication.py
index 56cc7d45..bf9ae643 100644
--- a/edx_rest_framework_extensions/auth/jwt/authentication.py
+++ b/edx_rest_framework_extensions/auth/jwt/authentication.py
@@ -77,10 +77,13 @@ def authenticate_credentials(self, payload):
 
 
 def is_jwt_authenticated(request):
-    is_jwt_authenticated = issubclass(
-        type(request.successful_authenticator),
-        BaseJSONWebTokenAuthentication,
-    )
+    is_jwt_authenticated = False
+    successful_authenticator = getattr(request, 'successful_authenticator', None)
+    if successful_authenticator:
+        is_jwt_authenticated = issubclass(
+            type(successful_authenticator),
+            BaseJSONWebTokenAuthentication
+        )
     if is_jwt_authenticated:
         if not getattr(request, 'auth', None):
             logger.error(