通过示例在django的/ blog /上获取NoReverseMatch

时间:2018-11-06 09:39:27

标签: django

错误:

django.urls.exceptions.NoReverseMatch: Reverse for 'post_detail' with arguments '(2018, 11, 6, 'another post')' not found. 
1 pattern(s) tried: ['blog\\/(?P<year>[0-9]+)\\/(?P<month>[0-9]+)\\/(?P<day>[0-9]+)\\/(?P<post>[-a-zA-Z0-9_]+)\\/$']

这是我的templates / blog / base.html文件:

{% load static %}
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>{% block title %}{% endblock %}</title>
    <link href="{% static "css/blog.css" %}" rel="stylesheet">
</head>
<body>
    <div id="content">
        {% block content %}
        {% endblock %}
    </div>

    <div id="sidebar">
        <h2>My blog</h2>
        <p>This is my blog</p>
    </div>
</body>
</html>

这是我的模板/博客/帖子/list.html文件:

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

{% block title %}My Blog{% endblock %}

{% block content %}
    <h1>My Blog</h1>
    {% for post in posts%}
        <h2>
            <a href="{{ post.get_absolute_url }}">
                {{ post.title }}
            </a>
        </h2>
        <p class="date">
            Published {{ post.publish }} by {{ post.author }}
        </p>
        {{ post.body|truncatewords:30|linebreaks }}
    {% endfor %}
{% endblock %}

以及博客/网址文件:

from django.urls import path
from . import views

app_name = 'blog'

urlpatterns = [
    #post views
    path('',views.post_list,name='post_list'),
    path('<int:year>/<int:month>/<int:day>/<slug:post>/',
         views.post_detail,
         name='post_detail'),
]

博客/视图文件:

from django.shortcuts import render,get_object_or_404
from .models import Post

def post_list(request):
    posts = Post.published.all()
    return render(request,'blog/post/list.html',{'posts':posts})

def post_detail(request,year,month,day,post):
    post = get_object_or_404(Post,slug=post,
                                  status='published',
                                  published__year=year,
                                  published__month=month,
                                  published__day = day)
    return render(request,'blog/post/detail.html',{'post':post})

请帮助我解决问题,我会很高兴,因为我被困了一周!

1 个答案:

答案 0 :(得分:1)

好吧,正如您指出的那样,您使用Django by example书,那么您的get_absolute_url是:

def get_absolute_url(self):
    return reverse('blog:post_detail',
                   args=[self.publish.year,
                         self.publish.month,
                         self.publish.day,
                         self.slug])

有一个示例如何在书中创建Post对象: enter image description here

您输入了错误的内容,而不是输入slug='another-post'而不是slug='another post'

什么是slug。来自Django docs

  

子弹-匹配由ASCII字母或数字组成的任何子弹字符串,   加上连字符和下划线字符。例如,    building-your-1st-django-site

如您所见,在符号中不允许有空格。

您可以删除没有正确提示的帖子,然后创建另一个对象。

或者您可以直接在shell中修复现有帖子:

from django.utils.text import slugify

post = Post.objects.get(pk=id_of_your_post) # replace with int number
fixed_slug = slugify(post.slug)
post.slug = fixed_slug
post.save()