def check(request, q_id, questionpaper_id=None):
"""Checks the answers of the user for particular question"""
user = request.user
q_paper = QuestionPaper.objects.get(id=questionpaper_id)
paper = AnswerPaper.objects.get(user=request.user, question_paper=q_paper)
if not user.is_authenticated() or paper.end_time < datetime.datetime.now():
return my_redirect('/exam/login/')
question = get_object_or_404(Question, pk=q_id)
snippet_code = request.POST.get('snippet')
skip = request.POST.get('skip', None)
success_msg = False
success = True
if skip is not None:
next_q = paper.skip()
return show_question(request, next_q, questionpaper_id)
# Add the answer submitted, regardless of it being correct or not.
if question.type == 'mcq':
user_answer = request.POST.get('answer')
elif question.type == 'mcc':
user_answer = request.POST.getlist('answer')
else:
user_code = request.POST.get('answer')
user_answer = snippet_code + "\n" + user_code
new_answer = Answer(question=question, answer=user_answer,
correct=False)
new_answer.save()
paper.answers.add(new_answer)
# If we were not skipped, we were asked to check. For any non-mcq
# questions, we obtain the results via XML-RPC with the code executed
# safely in a separate process (the code_server.py) running as nobody.
correct, success, err_msg = validate_answer(user, user_answer, question)
if correct:
new_answer.correct = correct
new_answer.marks = question.points
new_answer.error = err_msg
success_msg = True
else:
new_answer.error = err_msg
new_answer.save()
time_left = paper.time_left()
if not success: # Should only happen for non-mcq questions.
if time_left == 0:
reason = 'Your time is up!'
return complete(request, reason, questionpaper_id)
if not paper.question_paper.quiz.active:
reason = 'The quiz has been deactivated!'
return complete(request, reason, questionpaper_id)
context = {'question': question, 'error_message': err_msg,
'paper': paper, 'last_attempt': user_code,
'quiz_name': paper.question_paper.quiz.description,
'time_left': time_left}
ci = RequestContext(request)
return my_render_to_response('exam/question.html', context,
context_instance=ci)
else:
if time_left <= 0:
reason = 'Your time is up!'
return complete(request, reason, questionpaper_id)
else:
next_q = paper.completed_question(question.id)
return show_question(request, next_q,
questionpaper_id, success_msg)
