def post(self, request, quiz_id: str, question_num: str, *args,
**kwargs) -> HttpResponseRedirect:
def check_correct() -> Tuple[int, bool]:
obj = self.get_object()
answers = map(int, request.POST.getlist('answers', []))
corrects = Answer.objects.filter(
question=obj, is_correct=True).values_list('id', flat=True)
return obj.id, set(answers) == set(corrects)
def save_result_to_session(question_id: int, result: bool) -> None:
if 'answers' not in request.session:
request.session['answers'] = {}
request.session['answers'][question_id] = result
request.session.save()
# keep in mind situation when admin changing question
save_result_to_session(*check_correct())
question_num = int(question_num)
if Question.objects.filter(quiz_id=quiz_id).count() == question_num:
# For production I'll create my own session storage (based on default) for working with answers.
# Next line must be encapsulated into session object.
answers = {
int(key): value
for key, value in request.session['answers'].items()
}
quiz_result = QuizResult.create_from_answers(
quiz_id=int(quiz_id), user_id=request.user.id, answers=answers)
url = quiz_result.get_absolute_url()
else:
url = reverse('question',
kwargs={
'quiz_id': quiz_id,
'question_num': question_num + 1
})
return HttpResponseRedirect(
url
) # yes, I know about unnecessary request, but it's just for demo
