Question

我正在尝试使用django为我的博客应用编辑现有的博客文章，但它说的是以下（我是一种新手，我确实尝试自己找到解决方案，但无法和＃39; T：

这里出现了错误：

Reverse for 'post_edit' with arguments '()' and keyword arguments '{'pk': ''}' not found. 1 pattern(s) tried: ['post/(?P<pk>[0-9]+)/edit/$']

这是我的urls.py:

from django.conf.urls import url
from . import views

urlpatterns = [
url(r'^$', views.post_list),
url(r'^post/(?P<pk>[0-9]+)/$', views.post_detail),
url(r'^post/new/$', views.post_new, name='post_new'),
url(r'^post/(?P<pk>[0-9]+)/edit/$', views.post_edit, name='post_edit'),
]

我的views.py

from django.shortcuts import render, get_object_or_404, redirect
from django.utils import timezone
from . models import Post
from . forms import PostForm

def post_list(request):
posts = Post.objects.filter(published_date__lte=timezone.now()).order_by('-published_date')[:3]
return render(request, 'blog/post_list.html', {'posts': posts})

def post_detail(request, pk):
postdetail = get_object_or_404(Post, pk=pk)
return render(request, 'blog/post_detail.html', {'postdetail': postdetail})

def post_new(request):
if request.method == 'POST':
    form = PostForm(request.POST)
    if form.is_valid():
        post = form.save(commit=False)
        post.author = request.user
        post.published_date = timezone.now()
        post.save()
        return redirect('blog.views.post_detail', pk=post.pk)
else:
    form = PostForm()
return render(request, 'blog/post_edit.html', {'form': form})

def post_edit(request, pk):
post = get_object_or_404(Post, pk=pk)
if request.method == 'POST':
    form = PostForm(request.POST, instance=post)
    if form.is_valid():
        post = form.save(commit=False)
        post.author = request.user
        post.published_date = timezone.now()
        post.save()
        return redirect('blog.views.post_detail', pk=post.pk)
else:
    form = PostForm(instance=post)
return render(request, 'blog/post_edit.html', {'form': form})

post_details页面（当我删除超链接时，我能够查看我的post_details页面：

{% extends "blog/base.html" %}

{% block content %}

<article id="article">
<div class="container">
  <div class="post-detail">
    {% if postdetail.published_date %}
      <h2>{{ postdetail.title }}</h2>
      <p>{{ postdetail.text }}</p>
      <small>{{ postdetail.published_date }}</small>
    {% endif %}
    <a href="{% url "post_edit" pk=post.pk %}">Edit this Post</a>
  </div>
</div>
{% endblock content %}

Answer 1

应该是postdetail.pk而不是post.pk，因为您在上下文中传递postdetail而不是post。

<a href="{% url "post_edit" pk=postdetail.pk %}">Edit this Post</a>

当您使用post.pk时，post_edit视图正在pk选择''（来自上面的错误），因为其中没有post上下文，因此没有网址能够与您的post_edit视图匹配，从而导致错误。

NoReverseMatch错误 - 发现它很难

1 个答案: