Question

我在https://tutorial.djangogirls.org/en之后建立了自己的博客。该网站在localhost上运行，但在pythonanywhere.com中显示NoReverse Match at /错误

未指定视图时显示此错误。但是我给出了代码片段来显示视图。

1）我的views.py

from django.utils import timezone
from .models import Post

# Create your views here.
def post_list(request):
    posts = Post.objects.filter(published_date__lte=timezone.now()).order_by('published_date')
    return render(request, 'blog/post_list.html', {'posts': posts})

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

2）post_detail.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 %}

3）post_list.html


{% block content %}
    {% for post in posts %}
        <div class="post">
            <div class="date">
                <p>published: {{ post.published_date }}</p>
            </div>
            <h2><a href="{% url 'post_detail' pk=post.pk %}">{{ post.title }}</a></h2>
            <p>{{ post.text|linebreaksbr }}</p>
        </div>
    {% endfor %}
{% endblock %}

4）和base.html

<html>
    <head>       
        <title>Krishna's blog</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 href="//fonts.googleapis.com/css?family=Lobster&subset=latin,latin-ext" rel="stylesheet" type="text/css">
        <link rel="stylesheet" href="{% static 'css/blog.css' %}">
    </head>
    <body>
        <div class="page-header">
            <h1><a href="/">Django Girls Blog</a></h1>
        </div>
        <div class="content container">
            <div class="row">
                <div class="col-md-8">
                {% block content %}
                {% endblock %}
                </div>
            </div>
        </div>
    </body>    
</html>

1）显示的错误是：

Reverse for 'post_detail' not found. 'post_detail' is not a valid view function or pattern name.
Request Method: GET
Request URL:    http://bhawanabadlani.pythonanywhere.com/
Django Version: 2.0.13
Exception Type: NoReverseMatch
Exception Value:    
Reverse for 'post_detail' not found. 'post_detail' is not a valid view function or pattern name.
Exception Location: /home/bhawanabadlani/.virtualenvs/bhawanabadlani.pythonanywhere.com/lib/python3.5/site-packages/django/urls/resolvers.py in _reverse_with_prefix, line 634
Python Executable:  /usr/local/bin/uwsgi
Python Version: 3.5.6
Python Path:    
['/home/bhawanabadlani/bhawanabadlani.pythonanywhere.com',
 '/var/www',
 '.',
 '',
 '/var/www',
 '/home/bhawanabadlani/.virtualenvs/bhawanabadlani.pythonanywhere.com/lib/python35.zip',
 '/home/bhawanabadlani/.virtualenvs/bhawanabadlani.pythonanywhere.com/lib/python3.5',
 '/home/bhawanabadlani/.virtualenvs/bhawanabadlani.pythonanywhere.com/lib/python3.5/plat-linux',
 '/home/bhawanabadlani/.virtualenvs/bhawanabadlani.pythonanywhere.com/lib/python3.5/lib-dynload',
 '/usr/lib/python3.5',
 '/usr/lib/python3.5/plat-linux',
 '/home/bhawanabadlani/.virtualenvs/bhawanabadlani.pythonanywhere.com/lib/python3.5/site-packages']
Server time:    Tue, 24 Sep 2019 13:37:10 +0530
Error during template rendering
In template /home/bhawanabadlani/bhawanabadlani.pythonanywhere.com/blog/template/blog/base.html, error at line 6

Reverse for 'post_detail' not found. 'post_detail' is not a valid view function or pattern name.
1   {% load static %}
2   <html>
3       <head>       
4           <title>Krishna's blog</title>
5           <link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css">
6           <link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap-theme.min.css">
7           <link href="//fonts.googleapis.com/css?family=Lobster&subset=latin,latin-ext" rel="stylesheet" type="text/css">
8           <link rel="stylesheet" href="{% static 'css/blog.css' %}">
9       </head>
10      <body>
11          <div class="page-header">
12              <h1><a href="/">Django Girls Blog</a></h1>
13          </div>
14          <div class="content container">
15              <div class="row">
16                  <div class="col-md-8">

Answer 1

如果它在本地运行，但不能在PythonAnywhere上运行，则可能是您已对代码库中的一个或多个urls.py文件进行了更改，这些文件未提交到git repo，也未转移到PythonAnywhere。

您必须确保Django知道模板名称为post_detail的url才能找到post_detail的反义字。

Answer 2

感谢您的回复。我意识到，每当我从pythonanywhere帐户中的GIT中提取更改时，都不必通过刷新网页来重新加载网页，而只需按下Web应用程序页面中的重新加载按钮即可。

很有趣，它显示错误，注意到已经进行了一些更改，但是没有合并这些更改。

点击绿色的Webapp重新加载按钮时，将进行更改。

/否进行反向匹配

2 个答案: