django POST表单的使用

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CSRF验证失败. 相应中断.
Help

Reason given for failure:

    CSRF token missing or incorrect.
    

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 passes a request to the template‘s render method.
    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.

{% extends "base.html" %}
{% block title %}
    hello
{% endblock %}
{% block content %}
    <div class="container">

      <form class="form-signin" action="/login_webmail/" method=‘post‘>{% csrf_token %}
        <h2 class="form-signin-heading">Please sign in</h2>
        <label class="sr-only" for="inputUserName">Email address/UserName</label>
        <input type="text" autofocus="" required="" placeholder="Email address/UserName" class="form-control" id="inputUserName" name="inputUserName">
        <label class="sr-only" for="inputPassword">Password</label>
        <input type="password" required="" placeholder="Password" class="form-control" id="inputPassword">
        <div class="checkbox">
          <label>
            <input type="checkbox" value="remember-me"> Remember me
          </label>
        </div>
        <button type="submit" class="btn btn-lg btn-primary btn-block">Sign in</button>
      </form>

    </div> <!-- /container -->

{% endblock %}

from django.http import HttpResponse
import datetime
from django.shortcuts import render_to_response
#post
from django.template import RequestContext
#post

def webindex(request):
    return render_to_response(‘index.html‘,context_instance=RequestContext(request))    

def login_webmail(request):
    if ‘inputUserName‘ in request.POST:
        message = request.POST[‘inputUserName‘]
    else:
        message = "Not inputUserName"
    return render_to_response(‘test_post.html‘,{‘test_post_name‘:message})