包含的urlconf manager.urls中没有任何模式

Question

解决方案:找到以下似乎工作正常的django代码段(http://djangosnippets.org/snippets/2445/)

from django.utils.functional import lazy
from django.core.urlresolvers import reverse

#Workaround for using reverse with success_url in class based generic views
#because direct usage of it throws an exception.

reverse_lazy = lambda name=None, *args : lazy(reverse, str)(name, args=args)

显然,django trunk 现在有一个reverse_lazy函数.

---

更新:此错误与我在通用视图中进行反向调用有关:

class AddObjView(CreateView):
    form_class = ObjForm
    template_name = 'manager/obj_add.html'
    success_url = reverse('manager-personal_objs')

这不是有效的吗？

如果我而不是泛型写这样的东西,它的工作原理:

def add_obj(request, pk):
    a=reverse('manager-personal-objs')
    return HttpResponse(a)

---

我有一个包含2个应用程序的项目.每个应用程序都有其网址和视图.它们都工作正常,但在管理器应用程序上,只要我在视图中引用反向函数(任何视图),我就会收到以下错误:异常类型:ImproperlyConfigured异常值:包含的urlconf manager.urls没有其中的任何模式

网址文件:

urlpatterns = patterns('',
    url(r'^$', ObjView.as_view(), name='manager-obj'),
    url(r'^add/$', AddObjView.as_view(), name='manager-add_obj'),
    url(r'^personal/$', PersonalObjsView.as_view(), name='manager-personal_objs'),    

)

异常位置:... _get_url_patterns中的site-packages\django\core\urlresolvers.py,第283行

我在整个站点中收到此错误(编辑:这显然是因为尝试导入manager.urls将导致错误).如果我删除include manager.urls,一切都会恢复工作; 如果我删除了反向调用,一切都很好; 如果我尝试将manager.urls重写为更简单的版本,它将继续出错.

我已经过了很多次,似乎找不到任何错误.

编辑:root urls.py

# coding=utf8
from django.conf.urls.defaults import patterns, include, url
from django.contrib.staticfiles.urls import staticfiles_urlpatterns
from django.views.generic.simple import direct_to_template

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

urlpatterns = patterns('',
    # Uncomment the admin/doc line below to enable admin documentation:
    url(r'^admin/doc/', include('django.contrib.admindocs.urls')),
    # Uncomment the next line to enable the admin:
    url(r'^admin/', include(admin.site.urls)),

    # Home Page
    url(r'^$', direct_to_template, {'template': 'home.html'}, name="home"),

    # manager
    url(r'^manager/', include('manager.urls')),

    # writing
    url(r'^writing/', include('writing.urls')),
)

urlpatterns += staticfiles_urlpatterns()

edit2:还应该注意到url模板标签在管理器应用程序中正常工作,如果我在另一个应用程序上执行反向调用,则反向调用可以正常工作.此外,每个网址都有书面的工作视图.

Answer 1

问题是您的URLConf在基于类的视图尝试反转URL(AddObjView.success_url)之前尚未完成加载.如果要在基于类的视图中继续使用reverse,则有两个选项:

a)您可以为您的类创建一个get_success_url()方法,然后从那里开始

class AddObjView(CreateView):
    form_class = ObjForm
    template_name = 'manager/obj_add.html'

    def get_success_url():
        return reverse('manager-personal_objs')

b)如果你在Django的trunk/dev版本上运行,那么你可以使用reverse_lazy https://docs.djangoproject.com/en/dev/topics/http/urls/#reverse-lazy

from django.core.urlresolvers import reverse_lazy

class AddObjView(CreateView):
    form_class = ObjForm
    template_name = 'manager/obj_add.html'
    success_url = reverse_lazy('manager-personal_objs')

选项"b"是在Django的未来版本中执行此操作的首选方法.