如何解决页面未生成 404 错误 - Slug id 未显示找到：http://127.0.0.1:8000/postscommentapp/6/how-learn-anything-very-easyly
先生，我正在 Django 中开发一个 slug 项目。当我尝试打印 slug id 帖子时，它不会显示 404 错误。试了n次。任何人，请帮我在 urls.py 中解决这个问题。
找不到页面 (404) 请求方式：GET 请求网址：http://127.0.0.1:8000/postscommentapp/6/how-learn-anything-very-easily 使用在 postscommentpro.urls 中定义的 URLconf，Django 按以下顺序尝试了这些 URL 模式：
管理员/ postcommentapp/(?P\d+)/(?P[\w-]+)/$ [name='post_detail'] 当前路径postscommentapp/6/how-learn-anything-very-easyly，与这些都不匹配。
models.py
from django.db import models
from django.contrib.auth.models import User
# Create your models here.
class Post(models.Model):
STATUS_CHOICES = (
('draft','draft'),('published','published')
)
title = models.CharField(max_length=50)
slug = models.CharField(max_length=50)
author = models.ForeignKey(User,on_delete = models.CASCADE)
body = models.TextField()
created = models.DateTimeField(auto_Now_add=True)
updated = models.DateTimeField(auto_Now=True)
status = models.CharField(max_length=20,choices=STATUS_CHOICES,default='draft')
def __str__(self):
return self.title
admin.py
from django.contrib import admin
from .models import Post
# Register your models here.
class AdminPost(admin.ModelAdmin):
list_display = ['title','slug','body','author','created','updated','status']
prepopulated_fields = {'slug':('title',)}
list_editable = ('status',)
admin.site.register(Post,AdminPost)
views.py
from django.shortcuts import render
from .models import Post
# Create your views here.
def post_List(request):
posts = Post.objects.all()
return render(request,'postscommentapp/post_list.html',{'posts':posts})
def post_detail(request,id,slug):
post = Post.objects.get(id=id)
return render(request,'postscommentapp/post_detail.html',{'post':post})
url.py - 帖子评论应用
from django.urls import path
from postscommentapp import views
urlpatterns = [
path('',views.post_List,name=''),path('postscommentapp/(?P<id>\d+)/(?P<slug>[\w-]+)/$',views.post_detail,name='post_detail'),]
urls.py
"""postscommentpro URL Configuration
The `urlpatterns` list routes URLs to views. For more information please see:
https://docs.djangoproject.com/en/3.1/topics/http/urls/
Examples:
Function views
1. Add an import: from my_app import views
2. Add a URL to urlpatterns: path('',views.home,name='home')
Class-based views
1. Add an import: from other_app.views import Home
2. Add a URL to urlpatterns: path('',Home.as_view(),name='home')
Including another URLconf
1. Import the include() function: from django.urls import include,path
2. Add a URL to urlpatterns: path('blog/',include('blog.urls'))
"""
from django.contrib import admin
from django.urls import path,include
urlpatterns = [
path('admin/',admin.site.urls),path('',include('postscommentapp.urls')),]
post_detail.html
<!DOCTYPE html>
<html>
<head>
<title></title>
</head>
<body>
<h2>{{ post.title }}</h2>
</body>
</html>
post_list.html
<!DOCTYPE html>
<html>
<head>
<title></title>
<!-- Bootstrap CDN Lines -->
<Meta charset="utf-8">
<Meta name="viewport" content="width=device-width,initial-scale=1">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.16.0/umd/popper.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.5.2/js/bootstrap.min.js"></script>
<link href="https://fonts.googleapis.com/css2?family=Poppins&display=swap" rel="stylesheet">
<link href="https://fonts.googleapis.com/css2?family=Poppins:wght@600;700&display=swap" rel="stylesheet">
</head>
<style>
.col-md-6{
text-align: justify;
}
.img-thumbnail{
border:1px solid #6b6b47;
}
.title{
font-family: 'Poppins',sans-serif;
}
</style>
<body style="font-family: 'Poppins',sans-serif;">
<div class="container-fluid">
<br>
<h2 class="text-center" style="font-weight:bold; color: #0040ff;">Post Comments Python/Django Project:</h2>
<div class="row">
{% for each_item in posts %}
<div class="col-md-6">
<br>
<div class="img-thumbnail">
⭐ <a href="#" class="title">{{ each_item.title }}</a><small style="float:right">{{ each_item.created }}</small><br>
➟ Author: {{ each_item.author }}<br><br>
{{ each_item.body }}<br>
</div>
<br>
</div>
{% endfor %}
</div>
</div>
</body>
</html>
解决方法
我用自己的方式解决了这个错误。在 urls.py 中的帖子评论应用
from django.urls import path
from postscommentapp import views
urlpatterns = [
path('',views.post_List,name=''),path('postscommentapp/(?P<id>\d+)/(?P<slug>[\w-]+)/$',views.post_detail,name='post_detail'),]
把这个url代码改成这个urls.py-postscommentapp
from django.urls import path
from postscommentapp import views
urlpatterns = [
path('',path('post/<int:id>/<slug:slug>/',]
在views.py中写下这一行
from django.shortcuts import render,get_object_or_404
from .models import Post
# Create your views here.
def post_List(request):
posts = Post.objects.all()
return render(request,'postscommentapp/post_list.html',{'posts':posts})
def post_detail(request,id,slug):
# post = Post.objects.get(id=id)
post = get_object_or_404(Post,id=id,slug=slug)
return render(request,'postscommentapp/post_detail.html',{'post':post})
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