用户模型与 django 混合

Question

我正在 Django 中创建自定义 User 模型。我的模型已经有了一个基础 class，现在我使用 mixin 将其分开：

from django.db.models import Manager as DjangoModel

class ModelMixin(DjangoModel):

    class Meta:
        abstract = True

    objects = Manager() # Not relevant

    creation_date = DateTimeField(auto_now_add=True,
        help_text=_('The date in which the database entry was created'),
        verbose_name=_('Creation date'))

    last_update = DateTimeField(auto_now=True,
        help_text=_('The last time that the database entry was updated'),
        verbose_name=_('Last update'))

class Model(ModelMixin):

    class Meta(ModelMixin.Meta):
        abstract = True

Model 应该是我创建的几乎所有模型的基础 class。在这种情况下，我试图继承 AbstractBaseUser 和 ModelMixin:

class User(AbstractBaseUser, ModelMixin):

    objects = UserManager()

    EMAIL_FIELD = 'email'
    USERNAME_FIELD = 'email'
    REQUIRED_FIELDS = []

    email = EmailField(unique=True,
        help_text=_('Email address'),
        error_messages={
            'unique': _('This email address is already registered.')
        }
    )

    is_active = BooleanField(
        default=False,
        help_text=_('Whether the user is active')
    )

但是，mixin 迁移没有被应用，正如我所看到的描述数据库上的table：

CREATE TABLE IF NOT EXISTS "futils_user" ("id" integer NOT NULL PRIMARY KEY AUTOINCREMENT, "password" varchar(128) NOT NULL, "last_login" datetime NULL, "email" varchar(254) NOT NULL UNIQUE, "is_active" bool NOT NULL);

请注意 creation_date 和 last_update 字段不存在。这样做有什么问题吗？

Answer 1

您正在使用 from django.db.models import Manager as DjangoModel 而不是 django.db.models import Model as DjangoModel。由于字段未在 Model 的子类上定义，Django 不会将它们作为有效字段。

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