（我已经通过了所有其他问题）我想自定义默认用户模型。这就是为什么我创建了一个新的django项目而没有做迁移的原因。我只是写了代码并保存了它www.example.com settings.py

INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'authen',
]
AUTH_USER_MODEL = 'authen.CustomUser'

manager.py

from django.contrib.auth.base_user import BaseUserManager

class UserManager(BaseUserManager):
    use_in_migrations = True

    def create_user(self, email, password=None, **extra_fields):
        if not email:
            raise ValueError("Email is required")
        email = self.normalize_email(email)
        user = self.model(email=email,**extra_fields)
        user.set_password(password)
        user.save(using=self._db)
        return user
    def create_superuser(self, email, password, **extra_fields):
        extra_fields.setdefault('is_staff', True)
        extra_fields.setdefault('is_superuser',True)
        extra_fields.setdefault('is_active',True)
        
        if extra_fields.get('is_staff') is not True:
            raise ValueError("Super user must have is_staff true")
        return self.create_user(email, password, **extra_fields)

models.py of authen app

from django.db import models
from django.contrib.auth.models import AbstractUser
from .manager import UserManager
class CustomUser(AbstractUser):
    email = models.EmailField(unique=True)
    phone = models.CharField(max_length=20)
    nid = models.CharField(max_length=17,unique=True)
    profile_picture = models.ImageField(upload_to='profile_pics', blank=True, null=True)

    objects = UserManager()
    REQUIRED_FIELDS=[]
    USERNAME_FIELD = 'email'
    class Meta:
        app_label = 'CustomUser'

我没有做过任何迁移，我使用的是最新的Django和Python 3.1。我不得不为此创建几个项目。问我是否需要更多信息。