Django的通知评论GET所有者

Question

我期待在访问谁拥有发布的评论的CONTENT_TYPE

目前我可以访问用户谁帖子的用户，评论，但是我想通知谁拥有的人项目...

我试过user = comment.content_type.user但我得到一个错误。

在我的主要__init__.py文件

只要我改变，要user = request.user它工作正常，但随后的通知被发送到谁提出的意见的人。

from django.contrib.comments.signals import comment_was_posted 

if "notification" in settings.INSTALLED_APPS: 
    from notification import models as notification 

    def comment_notification(sender, comment, request, **kwargs): 
     subject = comment.content_object 
     for role in ['user']: 
      if hasattr(subject, role) and isinstance(getattr(subject, role), User): 
       user = getattr(subject, role) 
       message = comment 
       notification.send([user], "new_comment", {'message': message,}) 

    comment_was_posted.connect(comment_notification) 

Answer 1

comment.content_object.user是正确的。但是这个问题很棘手。由于评论可以附加到任何模型，您不知道此模型是否有user字段。在许多情况下，可以有不同的名称，即。如果您对article有任何意见，文章可能有article.author和如果您有car模型，并且您正在评论它，可能会有car.owner。因此在这种情况下使用.user不适用于此目的。

我的命题来解决这个问题正在感兴趣的评论可能的角色的列表，并尝试将消息发送到所有的人：

from django.contrib.comments.signals import comment_was_posted 

if "notification" in settings.INSTALLED_APPS: 
    from notification import models as notification 

    def comment_notification(sender, comment, request, **kwargs): 
     subject = comment.content_object 
     for role in ['user', 'author', 'owner', 'creator', 'leader', 'maker', 'type any more']: 
     if hasattr(subject, role) and isinstance(getattr(subject, role), User): 
      user = getattr(subject, role) 
      message = comment 
      notification.send([user], "new_comment", {'message': message,}) 

    comment_was_posted.connect(comment_notification) 

你也应该，移动这个列表配置的某些王：

from django.contrib.comments.signals import comment_was_posted 
default_roles = ['user', 'author', 'owner'] 
_roles = settings.get('MYAPP_ROLES', default_roles) 
if "notification" in settings.INSTALLED_APPS: 
    from notification import models as notification 

    def comment_notification(sender, comment, request, **kwargs): 
     subject = comment.content_object 
     for role in _roles: 
     if hasattr(subject, role) and isinstance(getattr(subject, role), User): 
      user = getattr(subject, role) 
      message = comment 
      notification.send([user], "new_comment", {'message': message,}) 

    comment_was_posted.connect(comment_notification) 

另一种方法解决这个问题是创建机制转换class到role。但要让它变得更加困难很难，所以你可能不想这么做。