NoReverseMatch位于/清单 [英] NoReverseMatch at / list

问题描述

我尝试获取动态链接

错误:

/

找不到带有关键字参数'{'pk':1}'的'new_single'.尝试了1个模式:['single/']

Reverse for 'new_single' with keyword arguments '{'pk': 1}' not found. 1 pattern(s) tried: ['single/']

代码:查看:

{% for new in news %}

    {{ new.id }}
     <h2><a href="{% url 'new_single' pk=new.id %}">{{ new.title }}</a></h2>
{% endfor %}

网址:

urlpatterns = [
    url(r'^$', views.news_list, name='news_list'),
    url(r'single/<int:pk>', views.new_single, name="new_single"),
]

观看次数:

def new_single(request,pk):
    new=get_object_or_404(News,id=pk)
    return render(request,"news/news_single.html",{"new":new})

推荐答案

您正在混合使用两种语法变体来指定模式.由于 django-2.0 ，所以有两个指定URL模式的方法:使用 path(..) [Django-doc] ，并且使用 re_path(..) [Django-doc] 用于类似正则表达式的模式(别名为 url(..) [Django-doc] ).

You are mixing two syntax variants to specify patterns. Since django-2.0 there are two ways to specify URL patterns: with path(..) [Django-doc], and with re_path(..) [Django-doc] for regular expressions-like patterns (an alias is url(..) [Django-doc]).

但是您将两者混为一谈.您可以同时使用两者，但是您需要指定 per urlpatterns 条目中正确的一项:

You however mix the two. You can use the two concurrently, but you need to specify per urlpatterns entry the correct one:

#  app/urls.py

from django.urls import path, re

urlpatterns = [
    url(r'^$', views.news_list, name='news_list'),
    path('single/<int:pk>/', views.new_single, name="new_single"),
]

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