【发布时间】：2013-02-15 15:08:44
【问题描述】：
我正在使用 django 设计一个基本的登录和注销页面。所以下面是我的代码
settings.py
TEMPLATE_CONTEXT_PROCESSORS = (
...........
...........
"django.contrib.messages.context_processors.messages",
"django.core.context_processors.request",
"django.core.context_processors.csrf",
)
MIDDLEWARE_CLASSES = (
'django.middleware.common.CommonMiddleware',
'django.contrib.sessions.middleware.SessionMiddleware',
'django.middleware.csrf.CsrfViewMiddleware',
'django.contrib.auth.middleware.AuthenticationMiddleware',
'django.contrib.messages.middleware.MessageMiddleware',
)
INSTALLED_APPS = (
'django.contrib.auth',
.......
.......
)
urls.py
from django.conf.urls.defaults import *
from django.conf import settings
urlpatterns = patterns('',
url(r'^$', 'learn_django.views.home_page'),
url(r'^login/$', 'learn_django.views.login'),
url(r'^logged_in$', 'learn_django.views.logged_in'),
url(r'^logout/$', 'learn_django.views.logout'),
)
if settings.DEBUG:
urlpatterns = patterns('',
url(r'^media/(?P<path>.*)$', 'django.views.static.serve',{'document_root': settings.MEDIA_ROOT, 'show_indexes': True}),
) + urlpatterns
views.py
from django.shortcuts import render_to_response
from django.template import RequestContext
def home_page(request):
return render_to_response("home_page.html")
def login(request):
return render_to_response("login.html")
def logged_in(request):
return render_to_response("logged_in.html",context_instance=RequestContext(request))
base.html
{% load staticfiles %}
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<link rel="stylesheet" href="{% static 'css/home_remaining.css' %}" type="text/css">
<title>{% block title %}{% endblock %}</title>
</head>
<body>
<header>
<div class='header_div'>
<div class="logout"><p id='logout'><a href="/logout" >Logout</a></p><div>
<div class="login"><p id='login'> <a href="/login" >Login</a></p><div>
</div>
</header>
<div class="body_content">
{% block body %}{% endblock %}
</div>
</body>
</html>
login.html
{% extends 'base.html' %}
{% block title %}Login Page{% endblock %}
{% block body %}
<div id='container'>
<form action="/logged_in" method="POST">
{% csrf_token %}
<label for="name">Username:</label><input type="name">
<label for="username">Password:</label><input type="password">
<div id="lower">
<input type="submit" value="Login">
</div>
</form>
</div>
{% endblock %}
上面是我的完整代码，当我们点击base.html 中给出的Login 链接时，它会显示一个登录表单。
登录后显示并输入一些username和password并单击Login按钮，显示一个错误页面，指出csrf error已经显示
google了很多，在表单标签里面添加了{% csrf_token %}，还在settings.py的模板上下文过程中添加了django.core.context_processors.csrf
下面是错误消息的样子
Forbidden (403)
CSRF verification failed. Request aborted.
Help
Reason given for failure:
CSRF cookie not set.
In general, this can occur when there is a genuine Cross Site Request Forgery, or when Django's CSRF mechanism has not been used correctly. For POST forms, you need to ensure:
Your browser is accepting cookies.
The view function uses RequestContext for the template, instead of Context.
In the template, there is a {% csrf_token %} template tag inside each POST form that targets an internal URL.
If you are not using CsrfViewMiddleware, then you must use csrf_protect on any views that use the csrf_token template tag, as well as those that accept the POST data.
You're seeing the help section of this page because you have DEBUG = True in your Django settings file. Change that to False, and only the initial error message will be displayed.
You can customize this page using the CSRF_FAILURE_VIEW setting.
因此，当我从模板上下文进程中删除 django.core.context_processors.csrf 时，它的工作正常。但我也想使用 csrf 保护。
最后，实际上上面的视图代码有什么问题，为什么会出现 csrf 错误页面以及如何避免上面的错误页面？
我是否需要在我的views.py 函数中添加任何代码？
谁能在我上面的函数中添加基本的登录和注销功能代码，这样对代码的实际理解更有帮助......
已编辑
针对上述问题，我导入了如下的 csrf_exempt 函数
from django.views.decorators.csrf import csrf_exempt
并将其作为 logged_in 视图之前的装饰器，当我单击登录按钮时它不会显示错误页面
但仍然想知道为什么下面提到的方法（例如从模板发送 Requestcontext）不起作用
【问题讨论】：
-
用 csrf_exempt 装饰视图只会移除 csrf 保护。我认为它不会影响您的 csrf 问题，但是您的 login 和 logged_in 视图应该合并到一个视图中。见 - docs.djangoproject.com/en/1.4/topics/forms/…
标签： python django templates views csrf