如何从Django3.0中的_uinit__uuu.py中的base.py导入类。应用程序注册表时，似乎无法将self.apps\u设置为就绪

Question

Django版本-3.0

BaseModel-base_models/models.py

# Create your models here.

from django.db import models


class BaseModel(models.Model):
    created_at = models.DateTimeField(auto_now_add=True)
    updated_at = models.DateField(auto_now=True)

基本模型/\uuuuu初始值\uuuuuuuuuuuuy.py

from base_models.models import BaseModel

设置.py

INSTALLED_APPS = [
     ...,
     'base_models.apps.BaseModelsConfig',
     ...
]

错误-

File "/Users/vaibhavsharma/vaibhav/workspace/rm-api/rm-api/base_models/__init__.py", line 1, in from base_models.models import BaseModel File "/Users/vaibhavsharma/vaibhav/workspace/rm-api/rm-api/base_models/models.py", line 6, in class BaseModel(models.Model): File "/Users/vaibhavsharma/vaibhav/workspace/rm-api/env/lib/python3.7/site-packages/django/db/models/base.py", line 107, in new app_config = apps.get_containing_app_config(module) File "/Users/vaibhavsharma/vaibhav/workspace/rm-api/env/lib/python3.7/site-packages/django/apps/registry.py", line 252, in get_containing_app_config self.check_apps_ready() File "/Users/vaibhavsharma/vaibhav/workspace/rm-api/env/lib/python3.7/site-packages/django/apps/registry.py", line 135, in check_apps_ready raise AppRegistryNotReady("Apps aren't loaded yet.") django.core.exceptions.AppRegistryNotReady: Apps aren't loaded yet.

Answer 1

我找到了答案，在Django3.0中你不能这么做。在这个版本中，每个应用程序都会初始化self.check_apps_ready（）函数从apps/registry.py运行，该函数本身会从app/settings.py检查已安装的应用程序

下面是我如何使用基本模型的

1. python manage.py startappbase
2. 已从base应用程序中删除models.py文件
3. 在同一应用程序中创建了模型目录
4. 在base/models/中创建了\uuuuu init\uuuuuuuuuuuuuuuuuuuuuuupy文件
5. 在base.py中初始化了我的模型
6. 将BaseModel包含在init.py（base/models/\uuuu init\uuuu.py）中 from .base import BaseModel
7. 最后在base/uuu init_uuuu.py中包含from .models import BaseModel
8. 通过from base import BaseModel将BaseModel包含在应用程序中的任意位置

完成了

引用-https://docs.djangoproject.com/en/3.0/topics/db/models/#organizing-models-in-a-package