Python django.db.utils.OperationalError:没有这样的表:auth_user
在安装Django userena之后,出现了一个错误 我的django版本:1.9.5 我只是一步一步地安装django userena,但当我迁移它时,出现了一个错误,我不知道如何解决它Python django.db.utils.OperationalError:没有这样的表:auth_user,python,django,django-guardian,django-userena,Python,Django,Django Guardian,Django Userena,在安装Django userena之后,出现了一个错误 我的django版本:1.9.5 我只是一步一步地安装django userena,但当我迁移它时,出现了一个错误,我不知道如何解决它 Traceback (most recent call last): File "manage.py", line 12, in <module> execute_from_command_line(sys.argv) File "C:\Python27\lib\site
Traceback (most recent call last):
File "manage.py", line 12, in <module>
execute_from_command_line(sys.argv)
File "C:\Python27\lib\site-packages\django\core\management\__init__.py", line 353, in execute_from_command_line
utility.execute()
File "C:\Python27\lib\site-packages\django\core\management\__init__.py", line 345, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "C:\Python27\lib\site-packages\django\core\management\base.py", line 348, in run_from_argv
self.execute(*args, **cmd_options)
File "C:\Python27\lib\site-packages\django\core\management\base.py", line 399, in execute
output = self.handle(*args, **options)
File "C:\Python27\lib\site-packages\django\core\management\commands\migrate.py", line 204, in handle
emit_post_migrate_signal(self.verbosity, self.interactive, connection.alias)
File "C:\Python27\lib\site-packages\django\core\management\sql.py", line 50, in emit_post_migrate_signal
using=db)
File "C:\Python27\lib\site-packages\django\dispatch\dispatcher.py", line 192, in send
response = receiver(signal=self, sender=sender, **named)
File "C:\Python27\lib\site-packages\guardian\management\__init__.py", line 33, in create_anonymous_user
User.objects.get(**lookup)
File "C:\Python27\lib\site-packages\django\db\models\manager.py", line 122, in manager_method
return getattr(self.get_queryset(), name)(*args, **kwargs)
File "C:\Python27\lib\site-packages\django\db\models\query.py", line 381, in get
num = len(clone)
File "C:\Python27\lib\site-packages\django\db\models\query.py", line 240, in __len__
self._fetch_all()
File "C:\Python27\lib\site-packages\django\db\models\query.py", line 1074, in _fetch_all
self._result_cache = list(self.iterator())
File "C:\Python27\lib\site-packages\django\db\models\query.py", line 52, in __iter__
results = compiler.execute_sql()
File "C:\Python27\lib\site-packages\django\db\models\sql\compiler.py", line 848, in execute_sql
cursor.execute(sql, params)
File "C:\Python27\lib\site-packages\django\db\backends\utils.py", line 79, in execute
return super(CursorDebugWrapper, self).execute(sql, params)
File "C:\Python27\lib\site-packages\django\db\backends\utils.py", line 64, in execute
return self.cursor.execute(sql, params)
File "C:\Python27\lib\site-packages\django\db\utils.py", line 95, in __exit__
six.reraise(dj_exc_type, dj_exc_value, traceback)
File "C:\Python27\lib\site-packages\django\db\backends\utils.py", line 64, in execute
return self.cursor.execute(sql, params)
File "C:\Python27\lib\site-packages\django\db\backends\sqlite3\base.py", line 323, in execute
return Database.Cursor.execute(self, query, params)
django.db.utils.OperationalError: no such table: auth_user
如果Django版本为1.9或更低,请使用
./manage.py syncdb
然后
更多详情
有什么帮助吗?问题在于这一行:
文件“C:\Python27\lib\site packages\guardian\management\\uuuu init\uuuuu.py”,第33行,在create\u anonymous\u user中
User.objects.get(**查找)
guardian\management\\uuuuu init\uuuuuuuuupy
在定义用户之前正在调用用户
为什么在定义之前要调用它?
…嗯,makemigrations
调用它,以确定db
中是否有更改,并定义它们(找到的更改)
…所以这是一个“鸡和蛋”的问题
我也有同样的错误,但有问题的代码是我自己的代码(不是像guardian
那样的库)
我的代码是这样的:
from django.db import OperationalError
try:
CHAT_BOT_USER, created = User.objects.get_or_create(username='rosty', email=settings.EMAIL_HOST_USER)
except OperationalError:
CHAT_BOT_USER = None
if created:
CHAT_BOT_USER.set_password(settings.EMAIL_HOST_PASSWORD)
CHAT_BOT_USER.save()
CHAT\u BOT\u USER,created=USER.objects.get\u或\u create(username='rosty',\email=settings.email\u HOST\u USER)
有问题的部分是在创建auth_User
表之前使用的User
我只在表存在时执行代码来解决这个问题。当没有操作错误时会发生这种情况。您可以通过以下方式了解它:
from django.db import OperationalError
try:
CHAT_BOT_USER, created = User.objects.get_or_create(username='rosty', email=settings.EMAIL_HOST_USER)
except OperationalError:
CHAT_BOT_USER = None
if created:
CHAT_BOT_USER.set_password(settings.EMAIL_HOST_PASSWORD)
CHAT_BOT_USER.save()
通过这种方式,makemigrations
运行except
代码,runserver
运行try
代码
注意创建的布尔值,您可以使用任何其他方法来避免makemigration
运行依赖于用户的代码。对象….
结果我得到了相同的错误,为了修复相同的错误,我检查了所述错误表是否存在于连接的数据库中。事实并非如此。再次应用迁移,成功了
python manage.py migrate
python manage.py makemigrations
运行:python3 manage.py迁移
python manage.py migrate --run-syncdb
此命令将查看哪些表未创建,并将创建所有需要的表。我在使用聊天室时遇到了相同的错误。
我通过删除应用程序迁移文件夹中的db.sqlite3文件和0001_initial.py文件来解决问题,然后执行以下语句:-
python manage.py makemigrations
python manage.py migrate
然后我就可以使用
python manage.py createsuperuser
就这样,错误解决了 看起来应用程序guardian
在数据库还不可用的情况下查询ORM。这是一个错误,你应该报告它。
python manage.py makemigrations
python manage.py migrate
python manage.py createsuperuser