Django登录表单 - 登录仪表板第二次 [英] Django Login Form- Logs into the dashboard 2nd time

问题描述

我有一个登录表单。每当我第一次登录时，它再次询问用户名和密码，而不显示我的用户名和密码。但是当我用相同的用户名和密码重新登录时，它会完美登录。如何可能？

这是我的代码： -

  {％extendsbase1.html％} 
 {％block header％} 
 {％endblock％} 
 
 {％block content％} 
< div类= 包裹 > 
< div class =content-wrap> 
< a href =＃class =logo>< / a> 
< form action =。 method = POST class =form-signinclass =well form-inline> 
< h3 class =form-signin-heading>< / h3> 
 {％csrf_token％} 
 {{form.as_p}} 
< input type =submitvalue =loginclass =btn btn-primary> 
< / form> 
< / div> 
< / div><！ -  end of wrap  - > 
 
 {％endblock％} 
  

我的urls.py文件

 从django.contrib.auth.views导入登录，注销
从django.conf.urls import * 
 
 urlpatterns = patterns（''，
 url（r'login'，login，kwargs = {'template_name'：'auth / login.html'}，name ='xyz_login '），
 url（r'logout'，logout，kwargs = {'template_name'：'auth / logout.html'}，name ='xyz_logout'），
）
  

settings.py文件

  LOGIN_REDIRECT_URL ='/ dashboard /'
 LOGIN_URL ='/ login /'
 AUTHENTICATION_BACKENDS =（'modules.data.backend.MyModelBackend'，）
  

backend.py

  from django.contrib.auth.backends import ModelBackend 
 
 class MyModelBackend（ModelBackend）：
 def authenticate（self，username = None，password = None ）
返回超级（MyModelBackend，self）.authenticate（username = username，password = password）
  




解决方案

正如你在这些日志中可以看到的那样：

1st：

[pre] [28 / Apr / 2014 06:49:22]POST / dashboard / HTTP / 1.1302 0
[28 / Apr / 2014 06:49:22 ]GET / login /？next = / dashboard / HTTP / 1.1200 1536


第2： / p>

  [28 / Apr / 2014 06:50:27]POST / login / dashboard / HTTP / 1.1302 0 
 [28 / Apr / 2014 06:50:27]GET / dashboard / HTTP / 1.1200 11292 
  

第一次您正在 POST请求到 / dashboard url，它必须是 login_required 即可。因此，您可以获得302 重定向到 / login /？next = / dashboard /

第二次 POST正确在 / login 上。因此，您已经登录并重定向到 / dashboard

现在，您将不得不调试，看看为什么第一个POST请求正在进行到 / dashboard 而不是 / login ？

I've a login form. Whenever I sign into it for the first time, it asks me the username and password again, without showing me inavlid username and password. But when I login again with the same username and password it logs in perfectly. How is it possible?

Here is my code:-

{% extends "base1.html" %}
    {% block header %} 
    {% endblock %}

    {% block content %}
        <div class="wrap">
            <div class="content-wrap">
                <a href="#" class="logo"></a>
                <form action ="." method = POST class="form-signin" class="well form-inline">
                    <h3 class="form-signin-heading"></h3>
                    {% csrf_token %}    
                    {{ form.as_p }}
                    <input type = "submit" value = "login" class="btn btn-primary">
                </form>
            </div>
        </div><!--end of wrap-->

    {%endblock%}        

My urls.py file

from django.contrib.auth.views import login, logout
from django.conf.urls import *

urlpatterns = patterns('',
    url(r'login', login,kwargs = {'template_name' : 'auth/login.html'}, name = 'xyz_login'),
    url(r'logout', logout,kwargs = {'template_name' : 'auth/logout.html'}, name = 'xyz_logout'),
)

settings.py file

LOGIN_REDIRECT_URL  = '/dashboard/'
LOGIN_URL           = '/login/'
AUTHENTICATION_BACKENDS = ('modules.data.backend.MyModelBackend',)

backend.py

from django.contrib.auth.backends import ModelBackend

class MyModelBackend(ModelBackend):
    def authenticate(self,username=None, password=None):
        return super(MyModelBackend,self).authenticate(username=username,password=password)

解决方案

As you can see in these logs:

1st :

[28/Apr/2014 06:49:22] "POST /dashboard/ HTTP/1.1" 302 0 
[28/Apr/2014 06:49:22] "GET /login/?next=/dashboard/ HTTP/1.1" 200 1536

2nd :

[28/Apr/2014 06:50:27] "POST /login/dashboard/ HTTP/1.1" 302 0 
[28/Apr/2014 06:50:27] "GET /dashboard/ HTTP/1.1" 200 11292

The 1st time you are doing a POST request to /dashboard url, which must be login_required. Hence, you get a 302 redirect to /login/?next=/dashboard/

The 2nd time you POST correctly on /login. Hence you get logged in and redirected to /dashboard

Now you will have to debug and see why the first POST request is being made to /dashboard rather than /login ?

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