views.py

from helloworld.polls.models import Poll
from django.shortcuts import render_to_response, get_object_or_404
from django.http import HttpResponse, HttpResponseRedirect

def index(request):
	latest_poll_list = Poll.objects.all().order_by('-pub_date')[:5]
	return render_to_response('polls/index.html', {'latest_poll_list': latest_poll_list})

def detail(request, poll_id):
  poll = get_object_or_404(Poll, pk=poll_id)
  return render_to_response('polls/detail.html', {'poll':poll})

def vote(request, poll_id):
  poll = get_object_or_404(Poll, pk=poll_id)
  try:
    selected_choice = p.choice_set.get(pk=request.POST['choice'])
  except (KeyError, Choice.DoesNotExist):
    # Redisplay the poll voting form.
    return render_to_response('polls/detail.html', { 'poll': p, 'error_message': "You didn't select a choice." })
  else:
	  selected_choice.votes += 1
	  selected_choice.save()
    return HttpResponseRedirect(reverse('helloworld.polls.views.results', args=(p.id,)))