Use details username only if it's non-blank. Closes gh-104

diff --git a/social_auth/backends/__init__.py b/social_auth/backends/__init__.py
index c59a03bafa097cdc7de4fa040e4fa7d3f91b946a..bb9868a177b994d200130cd0de32bde6fc862e6f 100644 (file)
--- a/social_auth/backends/__init__.py
+++ b/social_auth/backends/__init__.py
@@ -166,7 +166,7 @@ class SocialAuthBackend(ModelBackend):
 
         if FORCE_RANDOM_USERNAME:
             username = mk_uuid()
-        elif USERNAME in details:
+        elif details.get(USERNAME):
             username = details[USERNAME]
         elif DEFAULT_USERNAME:
             username = DEFAULT_USERNAME