Django Generic Views using decorator login_required

I'm new with django and I finished the 4 part tutorial on djangoproject.com

My problem is I want to put a login authentication on my polls app. I've use the decorator @login_required and it works properly but under my views.py I have only vote() method.

my views.py under "polls folder"

from django.shortcuts import render_to_response, get_object_or_404
from django.http import HttpResponseRedirect, HttpResponse
from django.contrib.auth.decorators import login_required
from django.views.decorators.cache import never_cache
from django.core.urlresolvers import reverse
from django.template import RequestContext
from polls.models import Poll, Choice


@login_required
@never_cache
def vote(request, poll_id):
    p = get_object_or_404(Poll, pk=poll_id)
    try:
        selected_choice = p.choice_set.get(pk=request.POST['choice'])
    except (KeyError, Choice.DoesNotExist):
        return render_to_response('polls/detail.html', {
            'poll': p,
            'error_message': "You didn't select a choice.",
        }, context_instance=RequestContext(request))
    else:
        selected_choice.votes += 1
        selected_choice.save()
        return HttpResponseRedirect(reverse('poll_results', args=(p.id,)))
    return HttpResponse("You're voting on poll %s." % poll_id) 

my urls.py under "polls folder"

from django.conf.urls.defaults import patterns, include, url
from django.views.generic import DetailView, ListView
from polls.models import Poll

urlpatterns = patterns('',
    url(r'^$',
        ListView.as_view(
            queryset = Poll.objects.order_by('-pub_date')[:5],
            context_object_name = 'latest_poll_list',
            template_name = 'polls/index.html'), name='poll_lists'),
    url(r'^(?P<pk>\d+)/$',
        DetailView.as_view(
            model = Poll,
            template_name = 'polls/detail.html'), name='poll_details'),
    url(r'^(?P<pk>\d+)/results/$',
        DetailView.as_view(
            model = Poll,
            template_name = 'polls/results.html'), name = 'poll_results'),
    url(r'^(?P<poll_id>\d+)/vote/$', 'polls.views.vote'),
)

under my urls.py I have use generic views.

Problem is: how will I put login required under the "index" of the polls app. So that the user will login first before he/she can view the available polls.

Current is: I have used login required under my views.py and method vote(), It will require login after voting.

anyone can help me out?

Thanks, Justin

1nd approach

In urls.py:

urlpatterns = patterns('',
    url(r'^$',
        login_required(ListView.as_view(
            queryset = Poll.objects.order_by('-pub_date')[:5],
            context_object_name = 'latest_poll_list',
            template_name = 'polls/index.html'), name='poll_lists')),
)

2nd approach

In views.py:

class IndexView(ListView):
    queryset = Poll.objects.order_by('-pub_date')[:5]
    context_object_name = 'latest_poll_list'
    template_name = 'polls/index.html'

    @method_decorator(login_required)
    def dispatch(self, request, *args, **kwargs):        
        return super(IndexView, self).dispatch(request, *args, **kwargs)

then in urls.py

urlpatterns = patterns('',
        url(r'^$',
            IndexView.as_view(), name='poll_lists'),
    )