python - 类型错误 : get_session_auth_hash() missing 1 required positional argument: 'self'

Question

我正在学习 Django，试图实现一个自定义用户模型，但每次我尝试用它登录/admin 时，我都会得到两个以 结尾的长回溯列表

TypeError: get_session_auth_hash() missing 1 required positional argument: 'self'

回溯中的单个文件或调用都不是我的文件之一

以防万一，这是我的模型和后端文件

模型.py

from django.db import models
from django.contrib.auth.models import BaseUserManager, AbstractBaseUser

class UserManager(BaseUserManager):
    """
    Custom user manager
    """
    def create_user(self, username, password):
        if not username or not password:
            raise ValueError("We need username and password here...")
        user = self.model(username=username)
        user.set_password(password)
        user.save()
        return user
    def create_superuser(self, username, password):
        if not username or not password:
            raise ValueError("We need username and password here...")
        user = self.create_user(username=username,password=password)
        user.set_password(password)
        user.is_admin = True
        user.is_staff = True
        user.save()
        return user

class User(AbstractBaseUser):
    """
    Custom user class
    """
    username = models.CharField(max_length=64, unique=True, db_index=True)
    joined = models.DateTimeField(auto_now_add=True, auto_now=False)
    is_active = models.BooleanField(default=True)
    is_staff = models.BooleanField(default=False)
    is_admin = models.BooleanField(default=False)

    objects = UserManager()

    USERNAME_FIELD = 'username'

    def __str__(self):
        return self.username

后端.py

from django.contrib.auth.models import check_password
from accounts.models import User

class AuthenticationBackend(object):
    """
    Backend for authentication
    """
    def authenticate(self, username=None, password=None):
        try:
            user = User.objects.get(username=username)
            if user.check_password(password):
                return user
        except User.DoesNotExist:
                return None

    def get_user(self, user_id):
        try:
            user = User.objects.get(pk=user_id)
            if user.is_active:
                return User
            return None
        except User.DoesNotExist:
            return None

Answer 1

在AuthenticationBackend.get_user中，您有:

        if user.is_active:
            return User

它实际上返回 User class 而不是您的 user 实例。调用此方法的代码稍后会尝试根据您返回的内容调用 get_session_auth_hash()，因此会出现错误。

你想要:

        if user.is_active:
            return user