Django 1.3 NoReverseMatch 错误

Question

我的应用程序中出现以下错误（就我在 Google 上看到的而言，这很常见）：

Caught NoReverseMatch while rendering: Reverse for 'add-post' with arguments '()' and keyword arguments '{}' not found.

问题是我第一次使用反向网址，所以我对可能发生的情况有点迷失导致这个错误，显然我一切都好。有人能告诉我发生了什么事吗？

urls.py 文件

urlpatterns = patterns('e_cidadania.apps.news.views',

    url(r'^add/$', 'add_post', name='add-post'),

    url(r'^(?P<post_id>\d+)/delete/$', DeletePost.as_view(), name='delete-post'),

    url(r'^(?P<post_id>\d+)/edit/$', 'edit_post', name='edit-post'),

    url(r'^(?P<post_id>\d+)', ViewPost.as_view(), name='view-post')

)

模板

[...]

{% if perms.news.add_post %}
    <div id="tools">
        <a href="{% url add-post %}">
            <img src="{{ STATIC_URL }}/assets/icons/add16.png" alt="{% trans 'Add new post' %}" title="{% trans 'Add new post' %}"/>
        </a>

[...]

新闻views.py（该字段有140行长，所以我把它剪掉了）

from django.http import HttpResponse, HttpResponseRedirect
from django.shortcuts import render_to_response, get_object_or_404, redirect
from django.contrib.auth.decorators import login_required, permission_required

# Generic class-based views
from django.views.generic.base import TemplateView, RedirectView
from django.views.generic.list import ListView
from django.views.generic.edit import CreateView, UpdateView, DeleteView
from django.views.generic.detail import DetailView

from django.template import RequestContext
from django.views.generic.create_update import create_object
from django.views.generic.create_update import update_object

from django.contrib.auth.models import User
from e_cidadania.apps.spaces.models import Space
from e_cidadania.apps.news.models import Post
from e_cidadania.apps.news.forms import NewsForm    

@permission_required('news.add_post')
def add_post(request, space_name):

    """
    Create a new post. Only registered users belonging to a concrete group
    are allowed to create news. nly site administrators will be able to
    post news in the index page.
    """
    current_space = get_object_or_404(Space, url=space_name)
    form = NewsForm(request.POST or None)

    if request.method == 'POST':
        form_uncommited = form.save(commit=False)
        form_uncommited.author = request.user

        # Get space id
        place = Space.objects.get(url=space_name)
        form_uncommited.space = place

        # This should not be necessay since the editor filters the
        # script tags
        #if "<script>" in form_uncommited.post_message:
        #    return "SCRIPT TAGS ARE NOT ALLOWED"

        if form.is_valid():
            form_uncommited.save()
            return redirect('/spaces/' + space_name)

    return render_to_response('news/post_add.html',
                              {'form': form, 'get_place': current_space},
                              context_instance = RequestContext(request))

Answer 1

尝试使用视图的路径来代替：

{% url e_cidadania.apps.news.views.add_post %}

Answer 2

在您显示的信息中看不到任何明显的错误，也许您可​​以发布您的views.py？

确保 urls.py 中的每个条目都正确定义，因为反向导入整个 url 定义，如果出现错误（例如尚未实现的视图），则会引发错误。

另外，您的views.py add_post签名是否与您的urls.py匹配？抱歉这个愚蠢的问题，但是......只是确保;）

根据您的新信息进行编辑：

“def add_post(request, space_name):”

这需要将 space_name 传递到视图。从我看来，你的反对并没有传递任何论据。另外，请确保您的 urls.py 是正确的...您是否缺少“add/”之后的 space_name 参数的模式？