我已经成功运行基于 django 的页面一段时间了。现在我想我会打开调试模式并实现一个不错的 404.html 文件。问题是，只要我在 settings.py 中将 DEBUG 更改为“False”，无论我尝试访问哪个页面，我都会立即收到我不理解的服务器错误。现有页面或不存在的页面（应该显示我的 404.html）都会出错。
我正在使用乘客在 Dreamhost 上运行 django。为了获得有用的错误消息，我按照dreamhosts wiki上的说明使用模块粘贴根据这些说明设置了我的passenger_wsgi.py文件。这是我的passenger_wsgi.py：
import sys, os
INTERP = "/home/bhogberg/bin/python"
if sys.executable != INTERP: os.execl(INTERP, INTERP, *sys.argv)
cwd = os.getcwd()
myapp_directory = cwd + '/homepage'
sys.stdout = sys.stderr
sys.path.insert(0,myapp_directory)
sys.path.append(os.getcwd())
os.environ['DJANGO_SETTINGS_MODULE'] = "homepage.settings"
import django.core.handlers.wsgi
from paste.exceptions.errormiddleware import ErrorMiddleware
application = django.core.handlers.wsgi.WSGIHandler()
# To cut django out of the loop, comment the above application = ... line ,
# and remove "test" from the below function definition.
def testapplication(environ, start_response):
status = '200 OK'
output = 'Hello World! Running Python version ' + sys.version + '\n\n'
response_headers = [('Content-type', 'text/plain'),
('Content-Length', str(len(output)))]
#to test paste's error catching prowess, uncomment the following line
#while this function is the "application"
#raise("error")
start_response(status, response_headers)
return [output]
application = ErrorMiddleware(application, debug=True)
我还尝试将最后一行的调试更改为 False，在这种情况下我也会遇到错误。
只要我在 settings.py 中有 DEBUG=True 一切正常
这是我在打开 Debug=False 时遇到的错误（通过粘贴报告，而不是 django 的错误消息）：
Server Error
Module paste.exceptions.errormiddleware:144 in __call__
<< __traceback_supplement__ = Supplement, self, environ
sr_checker = ResponseStartChecker(start_response)
app_iter = self.application(environ, sr_checker)
return self.make_catching_iter(app_iter, environ, sr_checker)
except:
Module django.core.handlers.wsgi:241 in __call__
<< response = http.HttpResponseBadRequest()
else:
response = self.get_response(request)
# Apply response middleware
Module django.core.handlers.base:142 in get_response
<< exc_info = sys.exc_info()
receivers = signals.got_request_exception.send(sender=self.__class__, request=request)
return self.handle_uncaught_exception(request, resolver, exc_info)
finally:
# Reset URLconf for this thread on the way out for complete
Module django.core.handlers.base:177 in handle_uncaught_exception
<< mail_admins(subject, message, fail_silently=True)
# If Http500 handler is not installed, re-raise last exception
if resolver.urlconf_module is None:
raise exc_info[1], None, exc_info[2]
# Return an HttpResponse that displays a friendly error message.
Module django.core.urlresolvers:238 in _get_urlconf_module
<< return self._urlconf_module
except AttributeError:
self._urlconf_module = import_module(self.urlconf_name)
return self._urlconf_module
urlconf_module = property(_get_urlconf_module)
Module django.utils.importlib:35 in import_module
<< level += 1
name = _resolve_name(name[level:], package, level)
__import__(name)
return sys.modules[name]
Module ?:3 in <module>
<< from django.conf.urls.defaults import *
from django.contrib import admin
admin.autodiscover()
import os.path
Module django.contrib.admin:24 in autodiscover
<< try:
before_import_registry = copy.copy(site._registry)
import_module('%s.admin' % app)
except:
# Reset the model registry to the state before the last import as
Module django.utils.importlib:35 in import_module
<< level += 1
name = _resolve_name(name[level:], package, level)
__import__(name)
return sys.modules[name]
Module ?:6 in <module>
<<
admin.site.register(Page, PageAdmin)
Module django.contrib.admin.sites:93 in register
<<
# Instantiate the admin class to save in the registry
self._registry[model] = admin_class(model, self)
def unregister(self, model_or_iterable):
Module feincms.module.page.models:634 in __init__
<<
def __init__(self, *args, **kwargs):
if len(Page._feincms_templates) > 4:
del(self.radio_fields['template_key'])
AttributeError: type object 'Page' has no attribute '_feincms_templates'