【发布时间】：2021-11-15 06:18:05
【问题描述】：
我在 django 中构建博客并因为这个错误而卡住了。 当我单击 Readmore 按钮以加载完整的博客文章时。出现此错误。 它应该加载显示博客文章的详细页面，它向我显示了这个错误。 我尝试了互联网上可用的不同解决方案，但没有摆脱这个错误。
这是我的代码！
项目 url.py:
from django.contrib import admin
from django.urls import path, include
urlpatterns = [
path('admin/', admin.site.urls),
path('', include('Blog_App.urls')),
]
应用网址
from django.urls import path
from . import views
urlpatterns = [
path('', views.PostList.as_view(), name= 'home'),
path('user/<str:username>/', views.UserPostList.as_view(), name= 'user-posts'),
path('<slug:slug>', views.PostDetail.as_view(), name= 'post_detail'),
path('register/', views.Register, name= 'Registration'),
path('login/', views.Login, name= 'Login'),
path('logout/', views.logout_view, name= 'Logout'),
]
views.py
from django.db import models
from .forms import NewUserForm
from django.shortcuts import get_object_or_404, redirect, render
from django.http import HttpResponse
from django.contrib.auth import login,logout, authenticate
from django.contrib import messages
from django.contrib.auth.forms import AuthenticationForm
from django.views import generic
from .models import STATUS, Post
from django.contrib.auth.models import User
class PostList(generic.ListView):
queryset = Post.objects.filter(status=1).order_by('-created_on')
template_name = 'Blog_App/index.html'
class UserPostList(generic.ListView):
model = Post
template_name = 'Blog_App/user_posts.html'
context_object_name = 'posts'
def get_queryset(self):
user = get_object_or_404(User, username=self.kwargs.get('username'))
return Post.objects.filter(author=user).order_by('-created_on')
class PostDetail(generic.DetailView):
model = Post
template_name = 'Blog_App/post_detail.html'
def Register(request):
if request.method == 'POST':
form = NewUserForm(request.POST)
if form.is_valid():
user = form.save()
login(request, user)
messages.success(request, 'Registration succesfull')
return redirect('home')
messages.error(request, 'Invalid Information')
form = NewUserForm()
context = {'register_form': form}
return render(request, 'Blog_App/register.html', context )
def Login(request):
if request.method == 'POST':
form = AuthenticationForm(request, data=request.POST)
if form.is_valid():
username = form.cleaned_data.get('username')
password = form.cleaned_data.get('password')
user = authenticate(username=username, password=password)
if user is not None:
login(request, user)
messages.info(request, 'Congrats. You logged In! ')
return redirect('home')
else:
messages.error(request, 'Incorrect Credentials!')
else:
messages.error(request, 'Invalid Information')
form = AuthenticationForm()
return render(request, 'Blog_App/login.html', context={'login_form': form})
def logout_view(request):
logout(request)
messages.info(request, 'You are succesfully Logged out')
return redirect('home')
Base.html
<!DOCTYPE html>
<html lang="en">
{% load static %}
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Blog-App</title>
<link rel="stylesheet" href="{% static 'css/style.css' %}">
<link rel="stylesheet"
href="https://cdnjs.cloudflare.com/ajax/libs/materialize/1.0.0/css/materialize.min.css">
</head>
<body>
<div class="nav-container">
<nav class="test">
<div class="nav-wrapper">
<a href="#" data-target="mobile-demo" class="sidenav-trigger"><i class="material-
icons">menu</i></a>
<ul id="nav-mobile" class="hide-on-med-and-down">
<li><a href="{% url 'home' %}">Home</a></li>
<li><a href="badges.html">About </a></li>
<li><a href="badges.html">Contact Us</a></li>
<ul id="nav-mobile" class="right hide-on-med-and-down">
{% if user.is_authenticated %}
<li><a href="{% url 'Logout' %}">Logout</a></li>
<li><a href="#">{{user.username}}</a></li>
{% else %}
<li><a href="{% url 'Login' %}">Login</a></li>
<li><a href="{% url 'Registration' %}">Register</a></li>
{% endif %}
</ul>
<div>
</nav>
</div>
{% block content %}
{% endblock content %}
<footer class="page-footer" >
<div class="container">
<div class="row">
<div class="col l6 s12">
<h5 class="white-text">Footer Content</h5>
<p class="grey-text text-lighten-4">You can use rows and columns here to organize your
footer content.</p>
</div>
<div class="col l4 offset-l2 s12">
<h5 class="white-text">Links</h5>
<ul>
<li><a class="grey-text text-lighten-3" href="#!">Link 1</a></li>
<li><a class="grey-text text-lighten-3" href="#!">Link 2</a></li>
<li><a class="grey-text text-lighten-3" href="#!">Link 3</a></li>
<li><a class="grey-text text-lighten-3" href="#!">Link 4</a></li>
</ul>
</div>
</div>
</div>
<div class="footer-copyright">
<div class="container">
© 2014 Copyright Text
<a class="grey-text text-lighten-4 right" href="#!">More Links</a>
</div>
</div>
</footer>
<script src="https://cdnjs.cloudflare.com/ajax/libs/materialize/1.0.0/js/materialize.min.js">
</script>
<script src="https://unpkg.com/sweetalert/dist/sweetalert.min.js"></script>
{% if messages %}
{% for msg in messages %}
<script>
swal({
"text": "{{msg}}",
});
</script>
{% endfor %}
{% endif %}
</body>
</html>
index.html
{% extends 'base.html' %}
{% load static %}
{% block content %}
<div class="Blog-posts">
<div class="row">
<div class="div-1">
<div class="col s12 m6 ">
{% for post in post_list %}
<div class="card card-list blue-grey darken-1">
<div class="card-content white-text">
<div class="author">
<a href="{% url 'user-posts' post.author.username %}">
<h5 class="author-name"><img class="author-img" src="{% static
'images/profile.jpg' %}" alt="" height="40px" width="40px">
{{post.author}}</h5>
</a>
<small class="post-created_on">{{post.created_on}}</small>
</div>
<span class="card-title">{{post.title}}</span>
<p>{{post.content|slice:"200"}}</p>
</div>
<div class="Readmore-btn">
<a href="{% url 'post_detail' post.slug %}" class="waves-effect waves-
light btn-small">Read More</a></div>
</div>
{% endfor %}
</div>
</div>
<div class="div-2">
<div class="col m5">
<div class="card card-sidebar">
<div class="card-content black-text">
<span class="card-title">About Us</span>
<p>I am a very simple card. I am good at containing small bits of
information.
I am convenient because I require little markup to use effectively.</p>
</div>
<div class="card-action">
<div class="Readmore-btn_about"><a href="#" class="waves-effect waves-
light btn-small">Read More</a>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
{% endblock content %}
【问题讨论】：
-
看起来您正试图在 base.html 模板中的某处使用此行
{% url "about" %}- 但您的 urlpatterns 中没有任何具有此名称的路径.但是，我在您共享的代码中没有看到这一点 - 您确定您拥有正确的文件吗？ -
是的。这是我在 base.html 中编写的准确代码。这就是我感到困惑的地方，我在基本文件中没有像 {% url 'about' %} 这样的模式，但为什么他给我这个错误
标签： django django-models django-views django-templates django-urls