python - 在此服务器上找不到所请求的 URL。 Django

Question

我尝试在页面上写评论，然后在页面上重定向，我在浏览器中有空窗口， [b'<h1>Not Found</h1><p>The requested URL /post/add_comment/test_single_post/ was not found on this server.</p>']和AssertionError: 404 != 302 在终端日志中。我不明白为什么在这种情况下找不到页面(404)。

查看

class SinglePost(DetailView):
    model = Post
    template_name = 'post.html'

    def get_context_data(self, **kwargs):
        comment_form = CommentForm
        context = super(SinglePost, self).get_context_data(**kwargs)
        comments = Comments.objects.filter(comment_id=self.object).order_by('-added')
        context['comments'] = comments
        context['form'] = comment_form
        return context


@csrf_protect
def add_comment(request, slug):
    """
    Add comment to.
    """
    if request.POST:
        form = CommentForm(request.POST)
        if form.is_valid():
            comment = form.save(commit=False)
            comment.comment = Post.objects.get(slug=slug)
            form.save()
    return redirect('/post/{0}/'.format(slug)) 

网址

urlpatterns = patterns('',
    url(r'^post/(?P<slug>\S+)/$', SinglePost.as_view(),
                                    name='single_post'),
    url(r'^tag/(?P<slug>\S+)/$', TagView.as_view(),
                                    name='tagger'),
    url(r'^post/add_comment/(?P<slug>\S+)/$',
        'blog.views.add_comment', name="commenter"),
    url(r'^$', PostsList.as_view(), name="all_posts"),
)

模板

<h3>Comments:</h3>
{% for comment in comments %}
    <p>{{ comment.added }} | {{ comment.author }}</p>
    <p>{{ comment.comment_text }}</p>
{% empty %}
    <p>There are no comments here yet. Be first :)</p>
{% endfor %}
<form action="/post/add_comment/{{ object.slug }}/" method="POST">
    {% csrf_token %}
    {{ form.non_field_errors }}
    <div class="fieldWrapper">
        {{ form.subject.errors }}
        <label for="id_author">Add your name:</label><br>
        {{ form.author|addclass:"form-control" }}
        <br/>
        <label for="id_comment_text">Add your comment here:</label><br>
        {{ form.comment_text|addclass:'form-control comment-textarea' }}
    </div>
    <br>
    <input type="submit" value="Add comment" class="btn btn-primary">
</form>

谁能告诉我如何解决这个问题吗？

Answer 1

您的 single_post 正则表达式捕获所有以“post/”开头的网址。将此 url 放在模式的末尾:

urlpatterns = patterns('',
    url(r'^tag/(?P<slug>\S+)/$', TagView.as_view(),
                                    name='tagger'),
    url(r'^post/add_comment/(?P<slug>\S+)/$',
        'blog.views.add_comment', name="commenter"),
    url(r'^$', PostsList.as_view(), name="all_posts"),
    url(r'^post/(?P<slug>\S+)/$', SinglePost.as_view(),
                                    name='single_post'),
)

或者，作为更正确的解决方案，将 \S+ 正则表达式更改为有效的 slug 正则表达式 [\w-]+:

urlpatterns = patterns('',
    url(r'^post/(?P<slug>[\w-]+)/$', SinglePost.as_view(),
                                    name='single_post'),
    url(r'^tag/(?P<slug>[\w-]+)/$', TagView.as_view(),
                                    name='tagger'),
    url(r'^post/add_comment/(?P<slug>[\w-]+)/$',
        'blog.views.add_comment', name="commenter"),
    url(r'^$', PostsList.as_view(), name="all_posts"),
)