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首页 > 解决方案 > 如何修复 NoReverseMatch at / Reverse for 'post_detail' with keyword arguments '{u'pk': ''}' not found。尝试了 1 种模式：['post//']

python - 如何修复 NoReverseMatch at / Reverse for 'post_detail' with keyword arguments '{u'pk': ''}' not found。尝试了 1 种模式：['post//']

问题描述

我已经尝试了我在互联网上找到的与我的问题相似的所有内容，但没有帮助。如果你知道答案，请帮忙。

尝试设置博客的 post_detail 页面时出现错误。

错误消息：

Reverse for 'post_detail' with keyword arguments '{u'pk': ''}' not found. 
1 pattern(s) tried: ['post/<int:pk>/']

我的 post_list.html

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

{% load static %}

<html>
    <head>
        <title>Code Reminder</title>
        <link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css">
        <link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap-theme.min.css">
        <link rel="stylesheet" href="{% static 'css/blog.css' %}">
        <link href="//fonts.googleapis.com/css?family=Lobster&subset=latin,latin-ext" rel="stylesheet" type="text/css">
    </head>
    <body>
        <div class="page-header">
            <h1><a href="/">Coder Reminder</a></h1>
        </div>

<div class="content container">
    <div class="row">
        <div class="col-md-4">

{% block content %}
    {% for post in posts %}
        <div class="post">
            <div class="date">
                {{ post.published_date }}
            </div>
            <h1><a href="{% url 'post_detail' pk=post.blog.pk %}">{{ post.title }}</a></h1>
            <p>{{ post.text|linebreaksbr }}</p>
        </div>
    {% endfor %}
{% endblock %}

        </div>
    </div>
</div>

    </body>
</html>

我的 post_detail.html

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

{% block content %}
    <div class="post">
        {% if post.published_date %}
            <div class="date">
                {{ post.published_date }}
            </div>
        {% endif %}
        <h2>{{ post.title }}</h2>
        <p>{{ post.text|linebreaksbr }}</p>
    </div>
{% endblock %}

我的 base.html

{% load static %}

<html>
    <head>
        <title>Code Reminder</title>
        <link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css">
        <link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap-theme.min.css">
        <link rel="stylesheet" href="{% static 'css/blog.css' %}">
        <link href="//fonts.googleapis.com/css?family=Lobster&subset=latin,latin-ext" rel="stylesheet" type="text/css">
    </head>

    <body>
    <div class="page-header">
        <h1><a href="/">Code Reminder</a></h1>
    </div>
    <div class="content container">
        <div class="row">
            <div class="col-md-8">
            {% block content %}
            {% endblock %}
            </div>
        </div>
    </div>
</body>

</html>

我的意见.py

# -*- coding: utf-8 -*-
from __future__ import unicode_literals

# Create your views here.
from django.shortcuts import render
from django.utils import timezone
from .models import Post
from django.shortcuts import render, get_object_or_404


def post_list(request):
    posts = Post.objects.filter(published_date__lte=timezone.now()).order_by('published_date')
    return render(request, '/home/ud/PycharmProjects/blog/blog/blog/templates/blog/post_list.html', {'posts': posts})


def post_detail(request, pk):
    post = get_object_or_404(Post, pk=pk)
    return render(request, '/home/ud/PycharmProjects/blog/blog/blog/templates/blog/post_detail.html', {'post': post})

我的网址.py

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

urlpatterns = [
    url('', views.post_list, name='post_list'),
    url('post/<int:pk>/', views.post_detail, name='post_detail'),
]

最后是我的 myblog/urls.py

from django.conf.urls import url
from django.conf.urls import include
from django.contrib import admin


urlpatterns = [
    url(r'^admin/', admin.site.urls),
    url('', include('blog.urls')),
]

如果你知道答案，请帮助我。我真的尝试了一切，但我无法找出我的错误。

问候

标签： pythondjango

解决方案

错误消息说

Reverse for 'post_detail' with keyword arguments '{u'pk': ''}' not found.

这表明pk正在评估空字符串''。

您的网址标签是

{% url 'post_detail' pk=post.blog.pk %}

这意味着您正在尝试传递帖子的博客的 pk。但你几乎肯定想要帖子的 pk 代替：

{% url 'post_detail' pk=post.pk %}

其次，您使用的是旧url()的path()语法（Django 2.0 中的新功能）。你的网址应该是：

from django.urls import path

urlpatterns = [
    path('', views.post_list, name='post_list'),
    path('post/<int:pk>/', views.post_detail, name='post_detail'),
]

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