Django：从 INSTALLED_APPS 中删除 django.contrib.sites 时出错

Question

我想从我的 django 项目中删除 django.contrib.sites。

当我尝试删除时，我在启动服务器时遇到以下错误：

/usr/local/lib/python3.5/site-packages/django/db/models/fields/subclassing.py:22: RemovedInDjango110Warning: SubfieldBase has been deprecated. Use Field.from_db_value instead.
web_1 |   RemovedInDjango110Warning)
web_1 | 
web_1 | /usr/local/lib/python3.5/site-packages/django/db/models/fields/subclassing.py:22: RemovedInDjango110Warning: SubfieldBase has been deprecated. Use Field.from_db_value instead.
web_1 |   RemovedInDjango110Warning)
web_1 | 
web_1 | Performing system checks...
web_1 | 
web_1 | System check identified no issues (0 silenced).
web_1 | Unhandled exception in thread started by <function check_errors.<locals>.wrapper at 0x7f154e979048>
web_1 | Traceback (most recent call last):
web_1 |   File "/usr/local/lib/python3.5/site-packages/django/utils/autoreload.py", line 226, in wrapper
web_1 |     fn(*args, **kwargs)
web_1 |   File "/usr/local/lib/python3.5/site-packages/django/core/management/commands/runserver.py", line 117, in inner_run
web_1 |     self.check_migrations()
web_1 |   File "/usr/local/lib/python3.5/site-packages/django/core/management/commands/runserver.py", line 163, in check_migrations
web_1 |     executor = MigrationExecutor(connections[DEFAULT_DB_ALIAS])
web_1 |   File "/usr/local/lib/python3.5/site-packages/django/db/migrations/executor.py", line 20, in __init__
web_1 |     self.loader = MigrationLoader(self.connection)
web_1 |   File "/usr/local/lib/python3.5/site-packages/django/db/migrations/loader.py", line 49, in __init__
web_1 |     self.build_graph()
web_1 |   File "/usr/local/lib/python3.5/site-packages/django/db/migrations/loader.py", line 306, in build_graph
web_1 |     _reraise_missing_dependency(migration, parent, e)
web_1 |   File "/usr/local/lib/python3.5/site-packages/django/db/migrations/loader.py", line 276, in _reraise_missing_dependency
web_1 |     raise exc
web_1 |   File "/usr/local/lib/python3.5/site-packages/django/db/migrations/loader.py", line 302, in build_graph
web_1 |     self.graph.add_dependency(migration, key, parent)
web_1 |   File "/usr/local/lib/python3.5/site-packages/django/db/migrations/graph.py", line 126, in add_dependency
web_1 |     parent
web_1 | django.db.migrations.exceptions.NodeNotFoundError: Migration services.0001_initial dependencies reference nonexistent parent node ('sites', '0002_alter_domain_unique')

只有我在我的项目中所做的修改是，在settings.py我添加了以下信息：

SITE_ID = 1

INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'django.contrib.sites'
]

执行以下命令后在管理页面中查看结果：

python manage.py makemigrations
python manage.py migrate

现在，当我从设置和运行 makemigrations 和 migrate 命令中删除配置时，出现上述错误。

我正在使用 python:3.5 和 Django:1.9 与 docker。

Answer 1

看来是自己解决了。以下是我为解决它所做的事情：

从 settings.py
中删除以下内容
SITE_ID = 1

和‘django.contrib.sites'来自INSTALLED_APPS块

INSTALLED_APPS = [
    ‘django.contrib.sites'
]

从应用程序中的 migrations 文件夹中删除了自动生成的文件（我在其中导入了应用程序 django.contrib.sites Models）。
重新运行makemigrations和migrate命令。
一切正常。

谢谢。

Django：从 INSTALLED_APPS 中删除 django.contrib.sites 时出错

Django : Getting error while removing django.contrib.sites from INSTALLED_APPS

python

django

django-models

django-sites

docker