身份验证后，它不会重定向到django中的下一页

Question

I am not able to redirect to next page in Django after authentication.I have already defined next in views.py file and calling that value but in URL its redirecting to Login page with URL as below:

And without @login_required its working properly

After putting Username and Password redirecting to

http://127.0.0.1:8000/?next=/home/

But I want:

http://127.0.0.1:8000/home ( And display Home page)

Please help.

views.py

from django.shortcuts import render
from django.contrib.auth import authenticate, login, logout
from django.contrib.auth.decorators import login_required
from django.http import HttpResponseRedirect, HttpResponse
from django.contrib import auth
from django.conf import settings
from django.core.urlresolvers import reverse
def login(request):
    next = request.POST.get('next', 'home/')
    if request.method == "POST":
            username = request.POST['username']
            password = request.POST['password']
            user = authenticate(username=username, password=password)


            if user is not None:
                    if user.is_active:
                            auth.login(request, user)

                            return HttpResponseRedirect(settings.LOGIN_REDIRECT_URL)
                    else:
                            return HttpResponse("Inactive user.")
            else:
                    return HttpResponseRedirect(settings.LOGIN_URL)
    return render(request, "login.html")

def logout(request):
    auth.logout(request)
    return HttpResponseRedirect(settings.LOGIN_URL)

@login_required(redirect_field_name='next')
def home(request):
    return render (request, "home.html")

App-urls.py:

 from django.conf.urls import url

 from . import views

 urlpatterns = [
         url(r'^$', views.home, name='home'),
  ]

Project URL:

from django.conf.urls import url, include
from django.contrib import admin
from django.contrib.auth import views


urlpatterns = [
         url(r'^admin/', admin.site.urls),
         url(r'^home/', include('login.urls', namespace="login")),
         url(r'^$', views.login),
         url(r'^logout/$', views.logout),
 ]

Settings.py:

  import os

  # Build paths inside the project like this: os.path.join(BASE_DIR,  ...)
 BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))


# Quick-start development settings - unsuitable for production
# See     https://docs.djangoproject.com/en/1.9/howto/deployment/checklist/

# SECURITY WARNING: keep the secret key used in production secret!
SECRET_KEY = '(i34g@645+vc8$@y9qd)_fo1l#k%78up_cheab#!(b24xv$!uj'

# SECURITY WARNING: don't run with debug turned on in production!
DEBUG = True

ALLOWED_HOSTS = []


# Application definition

INSTALLED_APPS = [
      'login',
      'django.contrib.admin',
      'django.contrib.auth',
      'django.contrib.contenttypes',
      'django.contrib.sessions',
      'django.contrib.messages',
       'django.contrib.staticfiles',
  ]

 MIDDLEWARE_CLASSES = [
      'django.middleware.security.SecurityMiddleware',
      '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',
    ]

 ROOT_URLCONF = 'myproject.urls'

 TEMPLATES = [
    {
    'BACKEND': 'django.template.backends.django.DjangoTemplates',
    'DIRS': [],
    'APP_DIRS': True,
    'OPTIONS': {
        'context_processors': [
            'django.template.context_processors.debug',
            'django.template.context_processors.request',
            'django.contrib.auth.context_processors.auth',
            'django.contrib.messages.context_processors.messages',
        ],
    },
},
 ]

 WSGI_APPLICATION = 'myproject.wsgi.application'


 # Database
 # https://docs.djangoproject.com/en/1.9/ref/settings/#databases

DATABASES = {
'default': {
    'ENGINE': 'django.db.backends.sqlite3',
    'NAME': os.path.join(BASE_DIR, 'db.sqlite3'),
}
}


 # Password validation
 # https://docs.djangoproject.com/en/1.9/ref/settings/#auth-password-     validators

 AUTH_PASSWORD_VALIDATORS = [
     {
    'NAME':   'django.contrib.auth.password_validation.UserAttributeSimilarityValidator',
},
{
    'NAME':  'django.contrib.auth.password_validation.MinimumLengthValidator',
},
{
    'NAME': 'django.contrib.auth.password_validation.CommonPasswordValidator',
},
{
    'NAME': 'django.contrib.auth.password_validation.NumericPasswordValidator',
},
 ]


 # Internationalization
# https://docs.djangoproject.com/en/1.9/topics/i18n/

 LANGUAGE_CODE = 'en-us'

 TIME_ZONE = 'UTC'

 USE_I18N = True

 USE_L10N = True

USE_TZ = True


# Static files (CSS, JavaScript, Images)
# https://docs.djangoproject.com/en/1.9/howto/static-files/

STATIC_URL = '/static/'


LOGIN_URL = 'login/'
APPEND_SLASH = False

Login.html:

<!DOCTYPE html>
<center>

<section class="loginform cf">
<h1 style="color:blue"> User Login </h1>
<form name="login" method="post" accept-charset="utf-8" action="{% url   'login:home' %}">
{% csrf_token %}
<label for="usermail" align="center">User-Id </label>
<input type="alphanumeric" name="userid" >
<br \>
<label for="password" align="center">Password </label>
<input type="alphanumeric" name="password" >
<br \>
<input type="submit" value="Login" style="color:blue">
<input type="hidden" name="next" value="{{ next }}"/>
</center>
</form>
</section>

Answer 1

You've got some different things going on that are affecting it.

Your urls.py file needs some cleaning up. Because you've defined your own login/logout methods, you don't need to use the ones from django.contrib.auth.views . So your base urls.py file should look like this:

from django.conf.urls import url
from django.contrib import admin
import login.views

urlpatterns = [
    url(r'^admin/', admin.site.urls),
    url(r'^home/', include('login.urls')
    url(r'^$', login.views.login)
    url(r'^logout/$', login.views.logout)
]

Your login/urls.py file can stay the same. Now we are pointing login/logout to your views not the django.contrib.auth.views .

You have settings.LOGIN_URL set to login/ but your urls.py file directs / to the login function. For this answer, I'm changing settings.LOGIN_URL to / to match your url file.

Your login/views.py file only needed a few changes now that we've updated the urls.py file.

I cleaned up some of the import statements that were unnecessary and I removed redirect_field_name='next' from @login_required because 'next' is the default value.

We need to check both the POST and GET objects to get the next parameter.

The biggest change is after we authenticate the user and validate that they're active, instead of return HttpResponseRedirect(settings.LOGIN_REDIRECT_URL) we just do return HttpResponseRedirect('/home') or send them to the next url that we grabbed from the POST / GET data.

from django.shortcuts import render
from django.contrib import auth
from django.contrib.auth.decorators import login_required
from django.http import HttpResponse, HttpResponseRedirect
from django.conf import settings

def login(request):
    next = request.POST.get('next', request.GET.get('next', ''))
    if request.method == "POST":
        username = request.POST.get('username')
        password = request.POST.get('password')
        user = auth.authenticate(username=username, password=password)
        if user is not None:
            if user.is_active:
                login(request, user)
                if next:
                    return HttpResponseRedirect(next)
                return HttpResponseRedirect('/home')
            else:
                return HttpResponse('Inactive user')
        else:
            return HttpResponseRedirect(settings.LOGIN_URL)
    return render(request, "login.html")

def logout(request):
    auth.logout(request)
    # Redirect back to login page
    return HttpResponseRedirect(settings.LOGIN_URL)


@login_required
def home(request):
    return render(request, "home.html")

Once you have that, unless there's something else I'm missing, @login_required should properly redirect to your login page if the user isn't logged in.