fix: token throws an error when client is provided as a string

instead of the client_id

Author: dopry

oauth2_provider/oauth2_validators.py

@@ -220,6 +220,7 @@ def _load_application(self, client_id, request):
 
         try:
             if not isinstance(request.client, Application):
+                log.debug("invalid client type, Loading application for client_id %r", client_id)
                 request.client = Application.objects.get(client_id=client_id)
             # Check that the application can be used (defaults to always True)
             if not request.client.is_usable(request):
@@ -228,6 +229,7 @@ def _load_application(self, client_id, request):
             return request.client
         except Application.DoesNotExist:
             log.debug("Failed body authentication: Application %r does not exist" % (client_id))
+            request.client = None
             return None
 
     def _set_oauth2_error_on_request(self, request, access_token, scopes):
@@ -290,6 +292,7 @@ def client_authentication_required(self, request, *args, **kwargs):
             pass
 
         self._load_application(request.client_id, request)
+        log.debug("Determining if client authentication is required for client %r", request.client)
         if request.client:
             return request.client.client_type == AbstractApplication.CLIENT_CONFIDENTIAL