You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
62 lines
1.9 KiB
62 lines
1.9 KiB
from django.shortcuts import get_object_or_404, render
|
|
from django.http import HttpResponse, HttpResponseRedirect
|
|
from django.urls import reverse
|
|
from django.db.models import F
|
|
from django.views import generic
|
|
from django.utils import timezone
|
|
|
|
|
|
|
|
from .models import Choice, Question
|
|
|
|
# Create your views here.
|
|
|
|
|
|
class IndexView(generic.ListView):
|
|
template_name = "polls/index.html"
|
|
context_object_name = "latest_question_list"
|
|
|
|
def get_queryset(self):
|
|
"""
|
|
Return the last five published questions (not including those set to be
|
|
published in the future).
|
|
"""
|
|
return Question.objects.filter(pub_date__lte=timezone.now()).order_by("-pub_date")[
|
|
:5
|
|
]
|
|
|
|
class DetailView(generic.DetailView):
|
|
model = Question
|
|
template_name = "polls/detail.html"
|
|
|
|
def get_queryset(self):
|
|
"""
|
|
Excludes any questions that aren't published yet.
|
|
"""
|
|
return Question.objects.filter(pub_date__lte=timezone.now())
|
|
|
|
class ResultsView(generic.DetailView):
|
|
model = Question
|
|
template_name = "polls/results.html"
|
|
|
|
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):
|
|
# Redisplay the question voting form.
|
|
return render(
|
|
request,
|
|
"polls/detail.html",
|
|
{
|
|
"question": question,
|
|
"error_message": "You didn't select a choice.",
|
|
},
|
|
)
|
|
else:
|
|
selected_choice.votes = F("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:results", args=(question.id,)))
|