vote() 뷰함수와 템플릿

def vote(request, question_id):
    question = get_object_or_404(Question, pk=question_id)
    try :
        selected_choice = question.choice_set.get(pk=request.POST['choice'])
    except (KeyError, Choice.DoesNotExist):
        return render(request, 'polls/detail.html', {'question':question,
                      'error_message':"You didn't select a choice.",})
    else:
        selected_choice.votes +=1
        selected_choice.save()
        return HttpResponseRedirect(reverse('polls:results', args=(question_id,)))

def results(request, question_id):
    question = get_object_or_404(Question, pk=question_id)
    return render(request, 'polls/results.html', {'question':question})

<h1>{{ question.question_text }}</h1>
<ul>
    {% for choice in question.choice_set.all %}
    <li>{{ choice.choice_text }} - {{ choice.votes }} vote{{ choice.votes|pluralize }}</li>
    {% endfor %}
</ul>

<a href="{% url 'polls:detail' question.id %}">Vote again?</a>