NoReverseMatch - 'viewflow'不是注册的命名空间

Question

尝试从官方cookbook运行自定义UI应用（“parcel”）进行视图流时，我收到此错误：

  / parcel / delivery / 5 / start / 21 / detail /'viewflow'中的

NoReverseMatch 不是注册名称空间

我拍了一张截图：

这是追溯：

div

我试图在viewflow中查找Environment: Request Method: GET Request URL: http://localhost:8000/parcel/delivery/5/start/21/detail/ Django Version: 1.10.7 Python Version: 3.4.0 Installed Applications: ['django.contrib.admin', 'django.contrib.auth', 'django.contrib.contenttypes', 'django.contrib.sessions', 'django.contrib.messages', 'django.contrib.staticfiles', 'material', 'material.frontend', 'viewflow', 'viewflow.frontend', 'apps.parcel'] Installed Middleware: ['django.middleware.security.SecurityMiddleware', 'django.contrib.sessions.middleware.SessionMiddleware', 'django.middleware.common.CommonMiddleware', 'django.middleware.csrf.CsrfViewMiddleware', 'django.contrib.auth.middleware.AuthenticationMiddleware', 'django.contrib.messages.middleware.MessageMiddleware', 'django.middleware.clickjacking.XFrameOptionsMiddleware'] Template error: In template /Users/paul/delete-viewflows/templates/parcel/delivery/task_detail.html, error at line 0 'viewflow' is not a registered namespace 1 : {% extends 'viewflow/flow/base_task.html' %} 2 : {% load viewflow %} 3 : 4 : {% block nav_parcels_cls %}class="active"{% endblock %} 5 : 6 : {% block task_actions %} 7 : {% flowurl activation.task 'execute' user=request.user as execute_url %} 8 : {% if execute_url %} 9 : <a href="{{ execute_url }}" class="btn primary">Execute</a> 10 : {% endif %} Traceback: File "/Users/paul/.pyenv/versions/dj-viewflow/lib/python3.4/site-packages/django/urls/base.py" in reverse 77. extra, resolver = resolver.namespace_dict[ns] During handling of the above exception ('viewflow'), another exception occurred: File "/Users/paul/.pyenv/versions/dj-viewflow/lib/python3.4/site-packages/django/core/handlers/exception.py" in inner 42. response = get_response(request) File "/Users/paul/.pyenv/versions/dj-viewflow/lib/python3.4/site-packages/django/core/handlers/base.py" in _get_response 217. response = self.process_exception_by_middleware(e, request) File "/Users/paul/.pyenv/versions/dj-viewflow/lib/python3.4/site-packages/django/core/handlers/base.py" in _get_response 215. response = response.render() File "/Users/paul/.pyenv/versions/dj-viewflow/lib/python3.4/site-packages/django/template/response.py" in render 109. self.content = self.rendered_content File "/Users/paul/.pyenv/versions/dj-viewflow/lib/python3.4/site-packages/django/template/response.py" in rendered_content 86. content = template.render(context, self._request) File "/Users/paul/.pyenv/versions/dj-viewflow/lib/python3.4/site-packages/django/template/backends/django.py" in render 66. return self.template.render(context) File "/Users/paul/.pyenv/versions/dj-viewflow/lib/python3.4/site-packages/django/template/base.py" in render 208. return self._render(context) File "/Users/paul/.pyenv/versions/dj-viewflow/lib/python3.4/site-packages/django/template/base.py" in _render 199. return self.nodelist.render(context) File "/Users/paul/.pyenv/versions/dj-viewflow/lib/python3.4/site-packages/django/template/base.py" in render 994. bit = node.render_annotated(context) File "/Users/paul/.pyenv/versions/dj-viewflow/lib/python3.4/site-packages/django/template/base.py" in render_annotated 961. return self.render(context) File "/Users/paul/.pyenv/versions/dj-viewflow/lib/python3.4/site-packages/django/template/loader_tags.py" in render 174. return compiled_parent._render(context) File "/Users/paul/.pyenv/versions/dj-viewflow/lib/python3.4/site-packages/django/template/base.py" in _render 199. return self.nodelist.render(context) File "/Users/paul/.pyenv/versions/dj-viewflow/lib/python3.4/site-packages/django/template/base.py" in render 994. bit = node.render_annotated(context) File "/Users/paul/.pyenv/versions/dj-viewflow/lib/python3.4/site-packages/django/template/base.py" in render_annotated 961. return self.render(context) File "/Users/paul/.pyenv/versions/dj-viewflow/lib/python3.4/site-packages/django/template/loader_tags.py" in render 174. return compiled_parent._render(context) File "/Users/paul/.pyenv/versions/dj-viewflow/lib/python3.4/site-packages/django/template/base.py" in _render 199. return self.nodelist.render(context) File "/Users/paul/.pyenv/versions/dj-viewflow/lib/python3.4/site-packages/django/template/base.py" in render 994. bit = node.render_annotated(context) File "/Users/paul/.pyenv/versions/dj-viewflow/lib/python3.4/site-packages/django/template/base.py" in render_annotated 961. return self.render(context) File "/Users/paul/.pyenv/versions/dj-viewflow/lib/python3.4/site-packages/django/template/loader_tags.py" in render 174. return compiled_parent._render(context) File "/Users/paul/.pyenv/versions/dj-viewflow/lib/python3.4/site-packages/django/template/base.py" in _render 199. return self.nodelist.render(context) File "/Users/paul/.pyenv/versions/dj-viewflow/lib/python3.4/site-packages/django/template/base.py" in render 994. bit = node.render_annotated(context) File "/Users/paul/.pyenv/versions/dj-viewflow/lib/python3.4/site-packages/django/template/base.py" in render_annotated 961. return self.render(context) File "/Users/paul/.pyenv/versions/dj-viewflow/lib/python3.4/site-packages/django/template/loader_tags.py" in render 174. return compiled_parent._render(context) File "/Users/paul/.pyenv/versions/dj-viewflow/lib/python3.4/site-packages/django/template/base.py" in _render 199. return self.nodelist.render(context) File "/Users/paul/.pyenv/versions/dj-viewflow/lib/python3.4/site-packages/django/template/base.py" in render 994. bit = node.render_annotated(context) File "/Users/paul/.pyenv/versions/dj-viewflow/lib/python3.4/site-packages/django/template/base.py" in render_annotated 961. return self.render(context) File "/Users/paul/.pyenv/versions/dj-viewflow/lib/python3.4/site-packages/django/template/loader_tags.py" in render 174. return compiled_parent._render(context) File "/Users/paul/.pyenv/versions/dj-viewflow/lib/python3.4/site-packages/django/template/base.py" in _render 199. return self.nodelist.render(context) File "/Users/paul/.pyenv/versions/dj-viewflow/lib/python3.4/site-packages/django/template/base.py" in render 994. bit = node.render_annotated(context) File "/Users/paul/.pyenv/versions/dj-viewflow/lib/python3.4/site-packages/django/template/base.py" in render_annotated 961. return self.render(context) File "/Users/paul/.pyenv/versions/dj-viewflow/lib/python3.4/site-packages/django/template/loader_tags.py" in render 70. result = block.nodelist.render(context) File "/Users/paul/.pyenv/versions/dj-viewflow/lib/python3.4/site-packages/django/template/base.py" in render 994. bit = node.render_annotated(context) File "/Users/paul/.pyenv/versions/dj-viewflow/lib/python3.4/site-packages/django/template/base.py" in render_annotated 961. return self.render(context) File "/Users/paul/.pyenv/versions/dj-viewflow/lib/python3.4/site-packages/django/template/loader_tags.py" in render 70. result = block.nodelist.render(context) File "/Users/paul/.pyenv/versions/dj-viewflow/lib/python3.4/site-packages/django/template/base.py" in render 994. bit = node.render_annotated(context) File "/Users/paul/.pyenv/versions/dj-viewflow/lib/python3.4/site-packages/django/template/base.py" in render_annotated 961. return self.render(context) File "/Users/paul/.pyenv/versions/dj-viewflow/lib/python3.4/site-packages/django/template/loader_tags.py" in render 70. result = block.nodelist.render(context) File "/Users/paul/.pyenv/versions/dj-viewflow/lib/python3.4/site-packages/django/template/base.py" in render 994. bit = node.render_annotated(context) File "/Users/paul/.pyenv/versions/dj-viewflow/lib/python3.4/site-packages/django/template/base.py" in render_annotated 961. return self.render(context) File "/Users/paul/.pyenv/versions/dj-viewflow/lib/python3.4/site-packages/django/template/defaulttags.py" in render 209. nodelist.append(node.render_annotated(context)) File "/Users/paul/.pyenv/versions/dj-viewflow/lib/python3.4/site-packages/django/template/base.py" in render_annotated 961. return self.render(context) File "/Users/paul/.pyenv/versions/dj-viewflow/lib/python3.4/site-packages/django/template/defaulttags.py" in render 315. return nodelist.render(context) File "/Users/paul/.pyenv/versions/dj-viewflow/lib/python3.4/site-packages/django/template/base.py" in render 994. bit = node.render_annotated(context) File "/Users/paul/.pyenv/versions/dj-viewflow/lib/python3.4/site-packages/django/template/base.py" in render_annotated 961. return self.render(context) File "/Users/paul/.pyenv/versions/dj-viewflow/lib/python3.4/site-packages/django/template/base.py" in render 1044. output = self.filter_expression.resolve(context) File "/Users/paul/.pyenv/versions/dj-viewflow/lib/python3.4/site-packages/django/template/base.py" in resolve 711. obj = self.var.resolve(context) File "/Users/paul/.pyenv/versions/dj-viewflow/lib/python3.4/site-packages/django/template/base.py" in resolve 852. value = self._resolve_lookup(context) File "/Users/paul/.pyenv/versions/dj-viewflow/lib/python3.4/site-packages/django/template/base.py" in _resolve_lookup 915. current = current() File "/Users/paul/.pyenv/versions/dj-viewflow/lib/python3.4/site-packages/viewflow/frontend/apps.py" in index_url 55. return reverse('viewflow:index') File "/Users/paul/.pyenv/versions/dj-viewflow/lib/python3.4/site-packages/django/urls/base.py" in reverse 87. raise NoReverseMatch("%s is not a registered namespace" % key) Exception Type: NoReverseMatch at /parcel/delivery/5/start/21/detail/ Exception Value: 'viewflow' is not a registered namespace 以包含在我的项目网址中但找不到任何内容。

我该如何解决这个问题？

Answer 1

更新：请参阅下面的评论，了解实际的正确答案。

问题在于我错过了frontend_urls我的项目urls.py。示例代码中缺少这个。 这是工作urls.py：

from django.contrib import admin
from django.conf.urls import include, url
from django.views import generic
from material.frontend import urls as frontend_urls

urlpatterns = [
    url(r'^admin/', admin.site.urls),
    url('^$', generic.TemplateView.as_view(template_name='parcel/index.html')),
    url('^parcel/', include('apps.parcel.urls', namespace='parcel')),
    url('^accounts/', include('django.contrib.auth.urls')),
    url(r'', include(frontend_urls)),
]