如何在Django中正确地从基对象获取派生类对象?

I'm newcomer in django, and here is question:

我是django的新手，这里有一个问题:

I have model class:

我有模型类:

def Client(models.User) # django.contrib.auth.User
   company_name=models.CharField()

How could I get Client object when I have user object (and user is client)? One way is to filter objects by username:

当我有用户对象(和用户是客户端)时，如何获取客户端对象?一种方法是按用户名筛选对象:

user=request.user
client=Client.objects.filter(username=user.username)

But I think there is some different and more beautiful method to do this in django, because user is client (they are related one-to-one in database), is one there?

但是我认为在django中有一些不同的、更漂亮的方法来实现这一点，因为用户是客户机(它们在数据库中是相互关联的)，有吗?

1 个解决方案

#1

From the documentation on inheritance:

从继承文献中:

If you have a User that is also a Client, you can get from the User object to the Client object by using the lower-case version of the model name:

如果您的用户也是客户端，您可以使用模型名的小写版本从用户对象到客户端对象:

my_user = User.objects.get(username = 'foobar')
client = my_user.client

If the User instance is not a Client, you'll get a Client.DoesNotExist exception.

如果用户实例不是客户端，您将获得一个客户端。DoesNotExist例外。

#1