Python Django 1.9首次迁移并没有创建表

我以前从来没有遇到过这个问题。我已经启动了无数个项目，第一次运行“makemigrations”时没有问题。在这个项目中，我不断遇到错误：

django.db.utils.OperationalError:没有这样的表：accounts\u customuser

这就是问题所在，这里没有桌子……应该有一张桌子

我没有运行任何花哨的数据库，它只是sqlite3

INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'django.contrib.sites',
    'django_extensions',
    'rest_framework',
    'rest_framework.authtoken',
   # 'djoser',
   # 'django_comments',
   # 'django_comments_xtd',
    'accounts',
    'blog',
]

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.sqlite3',
        'NAME': os.path.join(BASE_DIR, 'db.sqlite3'),
    }
}

完全回溯：

Traceback (most recent call last):
File "C:\Program Files (x86)\JetBrains\PyCharm 4.5.4\helpers\pycharm\django_manage.py", line 41, in <module>
run_module(manage_file, None, '__main__', True)
File "C:\Python27\Lib\runpy.py", line 176, in run_module
fname, loader, pkg_name)
File "C:\Python27\Lib\runpy.py", line 82, in _run_module_code
mod_name, mod_fname, mod_loader, pkg_name)
File "C:\Python27\Lib\runpy.py", line 72, in _run_code
exec code in run_globals
File "C:\Users\User\Desktop\newapp\manage.py", line 10, in <module>
execute_from_command_line(sys.argv)
File "C:\Users\User\Desktop\newsite\lib\site-packages\django\core\management\__init__.py", line 353, in execute_from_command_line
utility.execute()
File "C:\Users\User\Desktop\newsite\lib\site-packages\django\core\management\__init__.py", line 345, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "C:\Users\User\Desktop\newsite\lib\site-packages\django\core\management\base.py", line 348, in run_from_argv
self.execute(*args, **cmd_options)
File "C:\Users\User\Desktop\newsite\lib\site-packages\django\core\management\base.py", line 398, in execute
self.check()
File "C:\Users\User\Desktop\newsite\lib\site-packages\django\core\management\base.py", line 426, in check
include_deployment_checks=include_deployment_checks,
File "C:\Users\User\Desktop\newsite\lib\site-packages\django\core\checks\registry.py", line 75, in run_checks
new_errors = check(app_configs=app_configs)
File "C:\Users\User\Desktop\newsite\lib\site-packages\django\core\checks\urls.py", line 13, in check_url_config
return check_resolver(resolver)
File "C:\Users\User\Desktop\newsite\lib\site-packages\django\core\checks\urls.py", line 23, in check_resolver
for pattern in resolver.url_patterns:
File "C:\Users\User\Desktop\newsite\lib\site-packages\django\utils\functional.py", line 33, in __get__
res = instance.__dict__[self.name] = self.func(instance)
File "C:\Users\User\Desktop\newsite\lib\site-packages\django\core\urlresolvers.py", line 417, in url_patterns
patterns = getattr(self.urlconf_module, "urlpatterns", self.urlconf_module)
File "C:\Users\User\Desktop\newsite\lib\site-packages\django\utils\functional.py", line 33, in __get__
res = instance.__dict__[self.name] = self.func(instance)
File "C:\Users\User\Desktop\newsite\lib\site-packages\django\core\urlresolvers.py", line 410, in urlconf_module
return import_module(self.urlconf_name)
File "C:\Python27\Lib\importlib\__init__.py", line 37, in import_module
__import__(name)
File "C:/Users/User/Desktop/newapp\newapp\urls.py", line 21, in <module>
from blog.views import PostViewSet
File "C:/Users/User/Desktop/newapp\blog\views.py", line 14, in <module>
class PostViewSet(ModelViewSet):
File "C:/Users/User/Desktop/newapp\blog\views.py", line 15, in PostViewSet
some_user = CustomUser.objects.get(pk=1)
File "C:\Users\User\Desktop\newsite\lib\site-packages\django\db\models\manager.py", line 122, in manager_method
return getattr(self.get_queryset(), name)(*args, **kwargs)
File "C:\Users\User\Desktop\newsite\lib\site-packages\django\db\models\query.py", line 381, in get
num = len(clone)
File "C:\Users\User\Desktop\newsite\lib\site-packages\django\db\models\query.py", line 240, in __len__
self._fetch_all()
File "C:\Users\User\Desktop\newsite\lib\site-packages\django\db\models\query.py", line 1074, in _fetch_all
self._result_cache = list(self.iterator())
File "C:\Users\User\Desktop\newsite\lib\site-packages\django\db\models\query.py", line 52, in __iter__
results = compiler.execute_sql()
File "C:\Users\User\Desktop\newsite\lib\site-packages\django\db\models\sql\compiler.py", line 848, in execute_sql
cursor.execute(sql, params)
File "C:\Users\User\Desktop\newsite\lib\site-packages\django\db\backends\utils.py", line 79, in execute
return super(CursorDebugWrapper, self).execute(sql, params)
File "C:\Users\User\Desktop\newsite\lib\site-packages\django\db\backends\utils.py", line 64, in execute
return self.cursor.execute(sql, params)
File "C:\Users\User\Desktop\newsite\lib\site-packages\django\db\utils.py", line 95, in __exit__
six.reraise(dj_exc_type, dj_exc_value, traceback)
File "C:\Users\User\Desktop\newsite\lib\site-packages\django\db\backends\utils.py", line 64, in execute
return self.cursor.execute(sql, params)
File "C:\Users\User\Desktop\newsite\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: accounts_customuser

---

问题是，在加载URL配置并导入视图时，甚至在创建表之前，您的

CustomUser.objects.get（pk=1）

查询正在运行。您可以通过将代码移动到

get\u queryset

方法来解决此问题

class PostViewSet(ModelViewSet):
    def get_queryset(self):
        some_user = CustomUser.objects.get(pk=1)
        return Post.objects.filter(
            Q(poster=some_user) |
            Q(poster__friends__creator=some_user) |
            Q(poster__friendship_creator__friend=some_user)).distinct()
    serializer_class = PostSerializer

---

makemigrations

然后

migrate

请显示完整的回溯发生在哪个迁移中？您可能需要添加对帐户的依赖关系。我添加了完整的回溯。您是否先运行

makemigrations

，然后运行

migrate

？您就是那个人！我最初尝试您的代码时遇到了这个错误：AssertionError:

base\u name

参数未指定，并且无法从视图集中自动确定名称，因为它没有

.queryset

属性。但只需将base\u名称添加到我的url路由器。register（r'posts'，PostViewSet，'Post'）解决了此问题。

class PostViewSet(ModelViewSet):
    def get_queryset(self):
        some_user = CustomUser.objects.get(pk=1)
        return Post.objects.filter(
            Q(poster=some_user) |
            Q(poster__friends__creator=some_user) |
            Q(poster__friendship_creator__friend=some_user)).distinct()
    serializer_class = PostSerializer