src/polls/views.py

   1 # This file is part of Wolnelektury, licensed under GNU Affero GPLv3 or later.
   2 # Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
   3 #
   4 from django.shortcuts import get_object_or_404, redirect, render
   5 from django.urls import reverse
   6 from django.views.decorators import cache
   7 from django.views.decorators.http import require_http_methods
   8
   9 from .models import Poll, PollItem
  10 from .forms import PollForm
  11
  12
  13 @cache.never_cache
  14 @require_http_methods(['GET', 'POST'])
  15 def poll(request, slug):
  16     poll = get_object_or_404(Poll, slug=slug, open=True)
  17
  18     if request.method == 'POST':
  19         redirect_to = reverse('poll', args=[slug])
  20         form = PollForm(request.POST, poll=poll)
  21         if form.is_valid():
  22             if not poll.voted(request.session):
  23                 try:
  24                     poll_item = PollItem.objects.filter(pk=form.cleaned_data['vote'], poll=poll).get()
  25                 except PollItem.DoesNotExist:
  26                     pass
  27                 else:
  28                     poll_item.vote(request.session)
  29         return redirect(redirect_to)
  30     elif request.method == 'GET':
  31         context = {}
  32         context['poll'] = poll
  33         context['voted_already'] = poll.voted(request.session)
  34         return render(request, 'polls/poll.html', context)