Django（代理和抽象）向自定义用户 class（AbstrsactBaseUser）的子级添加额外字段

Question

我创建了一个继承自 AbstractBaseUser 的自定义用户 class，这个 class 有一个子 class。 问题是我无法向孩子的班级添加新字段，因为他们有（类 Meta：proxy = Ture）。 出现以下错误： ?: (models.E017) Proxy model 'StudentUser' contains model fields.

用户模型.py

class AppUser(AbstractBaseUser, PermissionsMixin):
    objects = MyUserManager()

    username = models.CharField(max_length=128)
    email = models.EmailField(max_length=64, unique=True)
        .
        .
        .


class StudentUser(AppUser):
    objects = StudentManager()

    GPA = models.DecimalField(max_digits=4,decimal_places=2) #This causes the error if proxy=True 

    class Meta:
        proxy = True

    def save(self, *args, **kwargs):
        self.password = make_password(self.password)
        return super().save(*args, **kwargs)

坐席.py

INSTALLED_APPS = [
   .
   .
   .
    "app",
]
AUTH_USER_MODEL = "app.AppUser

管理员.py

admin.site.register(AppUser)
admin.site.register(StudentUser)

当我从子项中删除 (proxy = True) 并将 (abstract = True) 添加到父项时，出现以下错误： django.core.exceptions.ImproperlyConfigured: AUTH_USER_MODEL refers to model 'app.AppUser' that has not been installed

用户模型.py

class AppUser(AbstractBaseUser, PermissionsMixin):
    objects = MyUserManager()

    class Meta:
         abstract = True

    username = models.CharField(max_length=128)
    email = models.EmailField(max_length=64, unique=True)
        .
        .
        .


class StudentUser(AppUser):
    objects = StudentManager()

    GPA = models.DecimalField(max_digits=4,decimal_places=2) 

    def save(self, *args, **kwargs):
        self.password = make_password(self.password)
        return super().save(*args, **kwargs)

如何扩展 AppUser 并向子项添加字段并将 AppUser 保持为用户 model AUTH_USER_MODEL = "app.AppUser ？

Answer 1

它起作用了，我删除了代理和抽象的 class Meta：

用户模型.py

class AppUser(AbstractBaseUser, PermissionsMixin):
    objects = MyUserManager()

    username = models.CharField(max_length=128)
    email = models.EmailField(max_length=64, unique=True)
        .
        .


class StudentUser(AppUser):
    objects = StudentManager()

    GPA = models.DecimalField(max_digits=4,decimal_places=2) 

    def save(self, *args, **kwargs):
        self.password = make_password(self.password)
        return super().save(*args, **kwargs)