文件结构

fishBooked.setting.py

os.sys.path.insert(0,os.path.join(BASE_DIR,'users'))

AUTH_USER_MODEL="users.UserProfile"

users.models.py

from django.db import models

# Create your models here.

#覆盖Auth.user表的UserProfile表
from django.contrib.auth.models import AbstractUser
class UserProfile(AbstractUser):
    nick_name = models.CharField(max_length=50, verbose_name='呢称', default="")
    birday = models.DateField(verbose_name='生日', null=True, blank=True)
    gender = models.CharField(max_length=5, choices=(('male', "男"), ('female', '女')), default="")
    address = models.CharField(max_length=100, default="")
    mobile = models.CharField(max_length=11, null=True, blank=True)
    image = models.ImageField(upload_to="image/%Y/%m", default="image/default.png", max_length=100)

    class Meta:
        verbose_name = "用户信息"
        verbose_name_plural = verbose_name

    def __str__(self):
        return str(self.username)

xadmin虽然功能更加丰富，但是体积更大,运行得很慢，一般自己用admin就够了，不愿意花时间去配置。
把extra_apps定义为根目录，用xadmin的时候就可以直接import

import xadmin

fishBooked.setting.py

os.sys.path.insert(0,os.path.join(BASE_DIR,'extra_apps'))

# Application definition

INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'rest_framework',
    'rest_framework.authtoken',
    'fish',
    'xadmin',
    'crispy_forms',
    'reversion',
]