Merge pull request #13836 from eduNEXT/fmo/unicode_username_fixes

Quick fixes for users with unicode usernames.

openedx/core/djangoapps/bookmarks/models.py

@@ -98,7 +98,7 @@ class Bookmark(TimeStampedModel):
         """
         Return the resource id: {username,usage_id}.
         """
-        return "{0},{1}".format(self.user.username, self.usage_key)  # pylint: disable=no-member
+        return u"{0},{1}".format(self.user.username, self.usage_key)  # pylint: disable=no-member
 
     @property
     def display_name(self):

openedx/core/djangoapps/bookmarks/serializers.py

@@ -51,7 +51,7 @@ class BookmarkSerializer(serializers.ModelSerializer):
         """
         Return the REST resource id: {username,usage_id}.
         """
-        return "{0},{1}".format(bookmark.user.username, bookmark.usage_key)
+        return u"{0},{1}".format(bookmark.user.username, bookmark.usage_key)
 
     def get_path(self, bookmark):
         """

openedx/core/djangoapps/user_api/accounts/image_helpers.py

@@ -38,7 +38,8 @@ def _make_profile_image_name(username):
     Returns the user-specific part of the image filename, based on a hash of
     the username.
     """
-    return hashlib.md5(settings.PROFILE_IMAGE_SECRET_KEY + username).hexdigest()
+    hash_input = settings.PROFILE_IMAGE_SECRET_KEY + username
+    return hashlib.md5(hash_input.encode('utf-8')).hexdigest()
 
 
 def _get_profile_image_filename(name, size, file_extension=PROFILE_IMAGE_FILE_EXTENSION):