Support Weibo domain as username by setting. Closes #164

docs/backends/weibo.rst

@@ -13,4 +13,11 @@ Weibo OAuth 2.0 workflow.
 By default ``account id``, ``profile_image_url`` and ``gender`` are stored in
 extra_data field.
 
+The user name is used by default to build the user instance ``username``,
+sometimes this contains non-ASCII characters which might not be desirable for
+the website. To avoid this issue it's possible to use the Weibo ``domain``
+which will be inside the ASCII range by defining this setting::
+
+    SOCIAL_AUTH_WEIBO_DOMAIN_AS_USERNAME = True
+
 .. _Weibo: http://open.weibo.com

social/backends/weibo.py

@@ -27,7 +27,11 @@ def get_user_details(self, response):
         """Return user details from Weibo. API URL is:
         https://api.weibo.com/2/users/show.json/?uid=<UID>&access_token=<TOKEN>
         """
-        return {'username': response.get("name", ""),
+        if self.setting('DOMAIN_AS_USERNAME'):
+            username = response.get('domain', '')
+        else:
+            username = response.get('name', '')
+        return {'username': username,
                 'first_name': response.get('screen_name', '')}
 
     def user_data(self, access_token, *args, **kwargs):