fix(pre-existing): FUser has no nickname field - use first_name (article notify, message sender_name, bug user_name)

article/views.py

@@ -330,7 +330,7 @@ class ArticleCommentListCreateView(generics.ListCreateAPIView):
                     parent_comment_id = comment.parent_id
                     parent_comment_user_id = comment.parent.user_id if comment.parent else None
                     user_id = request.user.id
-                    user_nickname = request.user.nickname or request.user.username
+                    user_nickname = request.user.first_name or request.user.username
 
                     transaction.on_commit(lambda: self._send_notification_messages(
                         article_id, article_title, article_author_id, comment_id,
@@ -455,7 +455,7 @@ class ArticleLikeToggleView(APIView):
                 recipient=article.author,
                 sender=request.user,
                 msg_type='like',
-                title=f'{request.user.nickname or request.user.username} 赞了你的文章',
+                title=f'{request.user.first_name or request.user.username} 赞了你的文章',
                 content=f'《{article.title}》',
                 extra_info='',
                 target_link=f'/article/{pk}',