50 lines
1.7 KiB
Python
50 lines
1.7 KiB
Python
from django.shortcuts import get_object_or_404, render
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from django.http import HttpResponseRedirect
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from django.urls import reverse
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from django.utils import timezone
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from django.views import generic
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from .models import Choice, Question
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class IndexView(generic.ListView):
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template_name = 'polls/index.html'
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context_object_name = 'latest_questions'
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def get_queryset(self):
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"""Returns the last five published questions."""
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return Question.objects.filter(
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pub_date__lte=timezone.now(),
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).order_by('-pub_date')[:5]
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class DetailView(generic.DetailView):
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model = Question
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template_name = 'polls/detail.html'
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def get_queryset(self):
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"""Don't incluce questions that aren't published yet/"""
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return Question.objects.filter(pub_date__lte=timezone.now())
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class ResultsView(generic.DetailView):
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model = Question
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template_name = 'polls/results.html'
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def vote(request, question_id):
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question = get_object_or_404(Question, pk=question_id)
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try:
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selected_choice = question.choice_set.get(pk=request.POST['choice'])
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except (KeyError, Choice.DoesNotExist):
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# Redisplay the question voting form.
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return render(request, 'polls/detail.html', {
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'question': question,
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'error_message': "You didn't select a choice.",
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})
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else:
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selected_choice.votes += 1
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selected_choice.save()
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# Always return an HttpResponseRedirect after successfully dealing
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# with POST data. This prevents data from being posted twice if a
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# user hits the Back button.
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return HttpResponseRedirect(reverse('polls:results', args=(question.id,))) |