升级到Django 1.7-AppRegistryNotReady异常 [英] Upgrade to Django 1.7 - AppRegistryNotReady exception
问题描述
在将Django版本从1.6.7升级到1.7后，我试图通过使一切正常工作而苦苦挣扎.看来我无法专注于正确的事情.到目前为止，我尝试恢复这种情况.
I'm struggling by trying to make things work after upgrading the Django version from 1.6.7 to 1.7. It looks like I'm not able to focus on the right matter. I try to resume the situation so far.
问题是:如果我在wsgi.py文件中保留命令django.setup()，当我尝试访问我的网站时，出现内部服务器错误(500).查看日志，我得到:
Thing is: if I leave the command django.setup() in my wsgi.py file, when I try to access my website I get an internal server error (500). Looking at the logs, I get:
[Sun Oct 12 12:38:50 2014] [error] [client 127.0.0.1] mod_wsgi (pid=23258): Target WSGI script '/home/thrasher/webapps/django/myproject.wsgi' cannot be loaded as Python module.
[Sun Oct 12 12:38:50 2014] [error] [client 127.0.0.1] mod_wsgi (pid=23258): Exception occurred processing WSGI script '/home/thrasher/webapps/django/myproject.wsgi'.
[Sun Oct 12 12:38:50 2014] [error] [client 127.0.0.1] Traceback (most recent call last):
[Sun Oct 12 12:38:50 2014] [error] [client 127.0.0.1] File "/home/thrasher/webapps/django/myproject.wsgi", line 16, in <module>
[Sun Oct 12 12:38:50 2014] [error] [client 127.0.0.1] application = get_wsgi_application()
[Sun Oct 12 12:38:50 2014] [error] [client 127.0.0.1] File "/home/thrasher/webapps/django/lib/python2.7/django/core/wsgi.py", line 14, in get_wsgi_application
[Sun Oct 12 12:38:50 2014] [error] [client 127.0.0.1] django.setup()
[Sun Oct 12 12:38:50 2014] [error] [client 127.0.0.1] File "/home/thrasher/webapps/django/lib/python2.7/django/__init__.py", line 21, in setup
[Sun Oct 12 12:38:50 2014] [error] [client 127.0.0.1] apps.populate(settings.INSTALLED_APPS)
[Sun Oct 12 12:38:50 2014] [error] [client 127.0.0.1] File "/home/thrasher/webapps/django/lib/python2.7/django/apps/registry.py", line 78, in populate
[Sun Oct 12 12:38:50 2014] [error] [client 127.0.0.1] raise RuntimeError("populate() isn't reentrant")
[Sun Oct 12 12:38:50 2014] [error] [client 127.0.0.1] RuntimeError: populate() isn't reentrant
但是，如果我评论django.setup()调用，尝试访问该网站将获得此堆栈跟踪:
However, if I comment the django.setup() call, trying to access the website gets me this stack trace:
Environment:
Request Method: GET
Request URL: http://www.creepyvisions.it/
Django Version: 1.7
Python Version: 2.7.8
Installed Applications:
('django.contrib.auth',
'django.contrib.admin.apps.SimpleAdminConfig',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.sites',
'django.contrib.messages',
'django.contrib.staticfiles',
'django.contrib.admin',
'django.contrib.admindocs',
'myproject.archivio',
'sorl.thumbnail',
'django.contrib.sitemaps',
'rest_framework')
Installed Middleware:
('django.middleware.common.CommonMiddleware',
'django.contrib.sessions.middleware.SessionMiddleware',
'django.middleware.csrf.CsrfViewMiddleware',
'django.contrib.auth.middleware.AuthenticationMiddleware',
'django.contrib.messages.middleware.MessageMiddleware')
Traceback:
File "/home/thrasher/webapps/django/lib/python2.7/django/core/handlers/base.py" in get_response
98. resolver_match = resolver.resolve(request.path_info)
File "/home/thrasher/webapps/django/lib/python2.7/django/core/urlresolvers.py" in resolve
338. for pattern in self.url_patterns:
File "/home/thrasher/webapps/django/lib/python2.7/django/core/urlresolvers.py" in url_patterns
367. patterns = getattr(self.urlconf_module, "urlpatterns", self.urlconf_module)
File "/home/thrasher/webapps/django/lib/python2.7/django/core/urlresolvers.py" in urlconf_module
361. self._urlconf_module = import_module(self.urlconf_name)
File "/usr/local/lib/python2.7/importlib/__init__.py" in import_module
37. __import__(name)
File "/home/thrasher/webapps/django/myproject/urls.py" in <module>
33. url(r'^admin/', include(admin.site.urls)),
File "/home/thrasher/webapps/django/lib/python2.7/django/contrib/admin/sites.py" in urls
260. return self.get_urls(), self.app_name, self.name
File "/home/thrasher/webapps/django/lib/python2.7/django/contrib/admin/sites.py" in get_urls
221. self.check_dependencies()
File "/home/thrasher/webapps/django/lib/python2.7/django/contrib/admin/sites.py" in check_dependencies
159. if not apps.is_installed('django.contrib.admin'):
File "/home/thrasher/webapps/django/lib/python2.7/django/apps/registry.py" in is_installed
223. self.check_apps_ready()
File "/home/thrasher/webapps/django/lib/python2.7/django/apps/registry.py" in check_apps_ready
124. raise AppRegistryNotReady("Apps aren't loaded yet.")
Exception Type: AppRegistryNotReady at /
Exception Value: Apps aren't loaded yet.
为了完整起见，这是与wsgi相关的代码:
For the sake of completion, this is the code related to wsgi:
myprojext.wsgi
myprojext.wsgi
import os
import sys
os.environ.setdefault("DJANGO_SETTINGS_MODULE", "myproject.settings")
from django.core.wsgi import get_wsgi_application
application = get_wsgi_application()
wgsi.py
import django
from django.core.handlers.wsgi import WSGIHandler
def get_wsgi_application():
#django.setup()
return WSGIHandler()
对我来说，事情看起来很奇怪，我在Django官方文档和各种论坛中进行了很多搜索，但仍然无法正常工作.任何建议将不胜感激.
Things look very odd to me, I performed a lot of searches in the official Django docs and in various forums, but I'm still unable to get things work properly. Any suggestions would be much appreciated.
推荐答案
原来，问题是django.contrib.admin在INSTALLED_APPS中重复.看来这是问题的根源.删除第二个引用后，我就在wsgi.py中取消对django.setup()的注释，并且一切都变得晴朗起来了.现在一切正常.
It turned out that the problem was a duplication, in the INSTALLED_APPS, of the django.contrib.admin. It looks that it was the root of the problem. As soon as I removed the second reference, I uncommented django.setup() in wsgi.py and things became sunny and clear again. Now everything is working fine.
这篇关于升级到Django 1.7-AppRegistryNotReady异常的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
