Django上下文处理器故障

所以我刚刚开始学习Django,我正试图完成书中的一个示例应用程序。我现在被困在创建干燥的URL上。更具体地说,我无法让上下文处理器工作。我创建上下文处理器,如下所示:

from django.conf import settings
#from mysite.settings import ROOT_URL

def root_url_processor(request):
  return {'ROOT_URL': settings.ROOT_URL}

TEMPLATE_CONTEXT_PROCESSORS = ('mysite.context_processors',)

当我尝试转到在my settings.py中指定的ROOT_URL时,我收到以下错误:

在/图库中输入错误/

“模块”对象不可调用

:以下是有关my settings.py的一些信息,以备使用:

ROOT_URLCONF = 'mysite.urls'

ROOT_URL = '/gallery/'
LOGIN_URL = ROOT_URL + 'login/'
MEDIA_URL = ROOT_URL + 'media/'
ADMIN_MEDIA_PREFIX = MEDIA_URL + 'admin/'

TEMPLATE_DIRS = (
    # Put strings here, like "/home/html/django_templates" or "C:/www/django/templates".
    # Always use forward slashes, even on Windows.
    # Don't forget to use absolute paths, not relative paths.
)

TEMPLATE_CONTEXT_PROCESSORS = ('mysite.photogallery.context_processors',)

编辑2 :我要添加一些关于我的url文件的信息。实际上,我有一个根url.py、一个也位于根的real_url.py和一个存在于应用程序中的url.py。基本上,root/urls.py从real_urls.py隐藏root_URL,real_urls.py包含我的应用程序的URL.py。

from django.conf.urls.defaults import *
#from mysite.settings import ROOT_URL
from django.conf import settings

# Uncomment the next two lines to enable the admin:
from django.contrib import admin
admin.autodiscover()

urlpatterns = patterns('',
    # Example:
    (r'^blog/', include('mysite.blog.urls')),
                       url(r'^%s' % settings.ROOT_URL[1:], include('mysite.real_urls')),
    )

root/real_url.py:

from django.conf.urls.defaults import *
from django.contrib import admin

urlpatterns = patterns('', url(r'^admin/(.*)', admin.site.root),
                       url(r'^', include('mysite.photogallery.urls')),
                       )

root/photogallery/url.py(请注意,这可能并没有引起任何问题,但我在这里添加了它,以防有人想看到它。):

from django.conf.urls.defaults import *
from mysite.photogallery.models import Item, Photo

urlpatterns = patterns('django.views.generic', url(r'^$', 'simple.direct_to_template', kwargs={'template': 'index.html', 'extra_context': {'item_list': lambda: Item.objects.all()}
                                                                                               },
                                                   name='index'), url(r'^items/$', 'list_detail.object_list', kwargs={'queryset': Item.objects.all(), 'template_name': 'items_list.html', 'allow_empty': True },
                                                                      name='item_list'), url(r'^items/(?P<object_id>\d+)/$', 'list_detail.object_detail', kwargs={'queryset': Item.objects.all(), 'template_name': 'items_detail.html' }, name='item_detail' ), url(r'^photos/(?P<object_id>\d+)/$', 'list_detail.object_detail', kwargs={'queryset': Photo.objects.all(), 'template_name': 'photos_detail.html' }, name='photo_detail'),)