CSRF verification failed: Django 1.5.0 -

i'm running basic django login app (i thought) based on official docs and...it's still not working no matter i'm doing, , i've been looking through every single question on stackoverflow , not finding answer. i'm running django.version 1.5.0.

every single thing add or code, still csrf verification failed error.

inside portal/views.py:

@cache_page(60 * 15) @csrf_protect def index(request, id=none):     return render_to_response('undercovercoders/index.html',     context_instance=requestcontext(request))  @cache_page(60 * 15) def login_user(request):     if request.post:         username = request.post.get['username']         password = request.post.get['password']         user = authenticate(username=username, password=password)         if user not none:             if user.is_active:                 login(request, user)                             state = "you're logged in!"             else:                 state = "your account not active, please contact site admin."         else:             state = "your username and/or password incorrect."     return render_to_response('undercovercoders/index.html', {'state':state, 'username':username}, context_instance=requestcontext(request)) 

inside portal/templates/index.html:

 <div id="login-box">             {% if form.errors %}              <p>your username , password didn't match! please try again!</p>             {% endif %}             {{ state }}             <form class="login-widgets" action="/login/" method="post">{% csrf_token %}                 username :                  <input class="login-widgets-text" type="text" name="username" value="{{ username }}" />                 {{ form.username }}<br />                 password :                 <input type="password" name="password" value="{{ password }}" />                 {{ form.password }}<br />                 <input class="login-button" type="submit" value="login" />                 <input type="hidden" name="next" value="{{ next }}" />             </form> 

in urls.py /login/ defined following

(r'^login/$', 'portal.views.login'), 

my settings.py following:

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',     # uncomment next line simple clickjacking protection:     # 'django.middleware.clickjacking.xframeoptionsmiddleware', ) 

please help, i've been wrestling error evening.

edit: console returns me when added changed render :

/library/python/2.7/site-packages/django/template/defaulttags.py:59: userwarning: {% csrf_token %} used in template, context did not provide value.  caused not using requestcontext.   warnings.warn("a {% csrf_token %} used in template, context did not provide value.  caused not using requestcontext.")  [07/aug/2013 21:44:25] "get / http/1.1" 200 2881 [07/aug/2013 21:44:25] "get /static/css/screen.css http/1.1" 304 0 [07/aug/2013 21:44:29] "post /login/ http/1.1" 403 2282 

in views

return render(request, 'template/index.html', {'state':state, 'username':username}, c) 

you should do

return render(request, 'template/index.html', {'state':state, 'username':username}) 

right passing c in place of context_instance argument forces use of requestcontext.