from django.template import Context, loader
from django.contrib.simpletemplate.public import get_template, render_to_response
from django.shortcuts import get_object_or_404
from django.core.urlresolvers import reverse
from models import Poll, Choice
from django.http import HttpResponse
from django.http import HttpResponseRedirect

def index(request):
    latest_poll_list = Poll.objects.all().order_by('-pub_date')[:5]
    t = get_template('polls/index.pt')
    c = Context({
        'latest_poll_list': latest_poll_list,
    })
    #return HttpResponse(t.render(c))
    return render_to_response('polls/index.pt', {'latest_poll_list': latest_poll_list})

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

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):
        # Redisplay the poll voting form.
        return render_to_response('polls/detail.pt', {
            'poll': p,
            'error_message': "You didn't select a choice.",
        })
    else:
        selected_choice.votes += 1
        selected_choice.save()
        # Always return an HttpResponseRedirect after successfully dealing
        # with POST data. This prevents data from being posted twice if a
        # user hits the Back button.
        return HttpResponseRedirect(reverse('polls.views.results', args=(p.id,)))

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