Django：如何在单击一行时更改页面？

Bouh10 发表于 Dev

布10

当我在HTMl中的标记中单击一行时，我试图在Ddjango中进行一些查看，我需要一些建议，请考虑到我是Django的初学者。的确，当我单击它时，我想更改其视图，这将打开一个称为“Hash标签内部”的新视图。让我用以下代码向您解释bap2pmonitoring.html：

{% load staticfiles %}
<!DOCTYPE html>
<html lang="fr">
<head>
    <link rel="stylesheet" type="text/css" href="{% static 'css/style.css' %}" />
</head>
<body>

<h1> BAP2P Monitoring</h1>


<table>
    <tr>
        <th width=550 height=20>Torrent Hash</th>
        <th width=720 height=20>Torrent Name</th>
        <th width=120 height=20>Size</th>
        <th width=170 height=20>Active Peers</th>
    </tr>

{% for torrent in torrents %}
        <p id="demo">
        <tr bgcolor=eeeeee> 
            <td width=550 height=20><a href="{{ url 'hash' torrent.Hash }}">{{ torrent.Hash }}</a></td>
            <td width=720 height=20>{{ torrent.Name }}</td>
            <td width=120 height=20>{{ torrent.Size }}</td>
            <td width=170 height=20></td>
    </tr>
        </p>
{% endfor %}

</table>

</body>
</html>

我得到这样的结果：

！[在此处输入图片描述] [1]

我的想法是，当我单击这两行之一时，它将使用该torrent的哈希作为url来渲染有关该torrent信息的新视图，如下所示：

127.0.0.1:8000/torrents/606d4759c464c8fd0d4a5d8fc7a223ed70d31d7b

遵循Django教程之后，我尝试了很多事情而没有成功，然后尝试使用“ onclick”来启动我的def之一，view.py如下所示：

from django.shortcuts import render_to_response
from django.template import Template , Context
from polls.models import Torrent
# Create your views here.
# -*- coding: utf-8 -*-

def home(request):  
    return render_to_response('mysite/bap2pmonitoring.html', {'torrents':Torrent.objects.all()})


def details(request, torrent_hash):
    return render_to_response('mysite/detail_torrent.html', {'torrents':Torrent.objects.filter(hash=torrent_hash)})

我还尝试在以下方式中将哈希显示为网址urls.py：

from django.conf.urls import patterns,include, url
from django.contrib import admin
from polls.models import Torrent

urlpatterns = patterns('polls.views',

     url(r'^torrents$', 'home', name = 'home'),
     url(r'^torrents/(?P<torrent_hash>)/$', 'details', name = 'hash'),
     url(r'^admin/', include(admin.site.urls)),
)

我不明白该如何解决，任何想法都值得欢迎和赞赏

现在，我获得此错误页面：

NoReverseMatch at /torrents

Reverse for 'hash' with arguments '(u'606d4759c464c8fd0d4a5d8fc7a223ed70d31d7b',)' and keyword arguments '{}' not found. 1 pattern(s) tried: ['torrents/(?P<torrent_hash>)/$']

和此回溯：

   Environment:


Request Method: GET
Request URL: http://127.0.0.1:8000/torrents

Django Version: 1.8.1
Python Version: 2.7.3
Installed Applications:
('django.contrib.admin',
 'django.contrib.auth',
 'django.contrib.contenttypes',
 'django.contrib.sessions',
 'django.contrib.messages',
 'django.contrib.staticfiles',
 'polls')
Installed Middleware:
('django.contrib.sessions.middleware.SessionMiddleware',
 'django.middleware.common.CommonMiddleware',
 'django.middleware.csrf.CsrfViewMiddleware',
 'django.contrib.auth.middleware.AuthenticationMiddleware',
 'django.contrib.auth.middleware.SessionAuthenticationMiddleware',
 'django.contrib.messages.middleware.MessageMiddleware',
 'django.middleware.clickjacking.XFrameOptionsMiddleware',
 'django.middleware.security.SecurityMiddleware')


Template error:
In template /home/florian/Documents/mysite/templates/mysite/bap2pmonitoring.html, error at line 23
   Reverse for 'hash' with arguments '(u'606d4759c464c8fd0d4a5d8fc7a223ed70d31d7b',)' and keyword arguments '{}' not found. 1 pattern(s) tried: ['torrents/(?P<torrent_hash>)/$']

   13 :     <tr>



   14 :         <th width=550 height=20>Torrent Hash</th>



   15 :         <th width=720 height=20>Torrent Name</th>



   16 :         <th width=120 height=20>Size</th>



   17 :         <th width=170 height=20>Active Peers</th>



   18 :     </tr>



   19 : 



   20 : {% for torrent in torrents %}



   21 :         <p id="demo">



   22 :         <tr bgcolor=eeeeee> 



   23 :             <td width=550 height=20><a href=" {% url 'hash' torrent.Hash %} ">{{ torrent.Hash }}</a></td>



   24 :             <td width=720 height=20>{{ torrent.Name }}</td>



   25 :             <td width=120 height=20>{{ torrent.Size }}</td>



   26 :             <td width=170 height=20></td>



   27 :         </tr>



   28 :         </p>



   29 : {% endfor %}



   30 : 



   31 : </table>



   32 : 



   33 : </body>


Traceback:
File "/usr/local/lib/python2.7/dist-packages/django/core/handlers/base.py" in get_response
  132.                     response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "/home/florian/Documents/mysite/polls/views.py" in home
  8.     return render_to_response('mysite/bap2pmonitoring.html', {'torrents':Torrent.objects.all()})
File "/usr/local/lib/python2.7/dist-packages/django/shortcuts.py" in render_to_response
  39.         content = loader.render_to_string(template_name, context, using=using)
File "/usr/local/lib/python2.7/dist-packages/django/template/loader.py" in render_to_string
  99.         return template.render(context, request)
File "/usr/local/lib/python2.7/dist-packages/django/template/backends/django.py" in render
  74.         return self.template.render(context)
File "/usr/local/lib/python2.7/dist-packages/django/template/base.py" in render
  209.                     return self._render(context)
File "/usr/local/lib/python2.7/dist-packages/django/template/base.py" in _render
  201.         return self.nodelist.render(context)
File "/usr/local/lib/python2.7/dist-packages/django/template/base.py" in render
  903.                 bit = self.render_node(node, context)
File "/usr/local/lib/python2.7/dist-packages/django/template/debug.py" in render_node
  79.             return node.render(context)
File "/usr/local/lib/python2.7/dist-packages/django/template/defaulttags.py" in render
  217.                             nodelist.append(node.render(context))
File "/usr/local/lib/python2.7/dist-packages/django/template/defaulttags.py" in render
  507.                         six.reraise(*exc_info)
File "/usr/local/lib/python2.7/dist-packages/django/template/defaulttags.py" in render
  493.             url = reverse(view_name, args=args, kwargs=kwargs, current_app=current_app)
File "/usr/local/lib/python2.7/dist-packages/django/core/urlresolvers.py" in reverse
  579.     return force_text(iri_to_uri(resolver._reverse_with_prefix(view, prefix, *args, **kwargs)))
File "/usr/local/lib/python2.7/dist-packages/django/core/urlresolvers.py" in _reverse_with_prefix
  496.                              (lookup_view_s, args, kwargs, len(patterns), patterns))

Exception Type: NoReverseMatch at /torrents
Exception Value: Reverse for 'hash' with arguments '(u'606d4759c464c8fd0d4a5d8fc7a223ed70d31d7b',)' and keyword arguments '{}' not found. 1 pattern(s) tried: ['torrents/(?P<torrent_hash>)/$']

拉尔夫·金

您需要：

更改详细信息视图的上下文以仅访问单个种子，还包括URL中的参数：

details(request, torrent_hash):
    return render_to_response('mysite/detail_torrent.html', {'torrent':Torrent.objects.filter(hash=torrent_hash)})

使用这样的URL，它通过您的torrent哈希传递到视图：

 url(r'^torrents/(?P<torrent_hash>)/$', 'details', name = 'hash'),

您还需要您的detail_torrent.html模板，然后可以在其中使用“ torrent”上下文。

编辑以抢占另一个问题：

在您的主模板中，您可以使用此更改链接到种子。然后，您将torrent.Hash变量作为参数传递给您的URL，该变量将用于URL正则表达式中的torrent_hash：

{% for torrent in torrents %}
    <p id="demo">
    <tr bgcolor=eeeeee> 
        <td width=560 height=20><a href="{% url 'hash' torrent.Hash %}">{{ torrent.Hash }}</a></td>
        <td width=710 height=20>{{ torrent.Name }}</td>
        <td width=110 height=20>{{ torrent.Size }}</td>
        <td width=110 height=20></td>
    </tr>
    </p>
{% endfor %}

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