diff options
Diffstat (limited to 'exam/views.py')
| -rw-r--r-- | exam/views.py | 150 |
1 files changed, 150 insertions, 0 deletions
diff --git a/exam/views.py b/exam/views.py new file mode 100644 index 0000000..10d6c9a --- /dev/null +++ b/exam/views.py @@ -0,0 +1,150 @@ +import random +import sys +import traceback +import string + +from django.db import IntegrityError +from django.contrib.auth.models import User +from django.contrib.auth import login, logout, authenticate +from django.shortcuts import render_to_response, get_object_or_404, redirect +from django.template import RequestContext +from exam.models import Question, Quiz, Profile +from exam.forms import UserRegisterForm + +def gen_key(no_of_chars): + allowed_chars = string.digits+string.uppercase + return ''.join([random.choice(allowed_chars) for i in range(no_of_chars)]) + +def index_old(request): + """The start page. + """ + question_list = Question.objects.all() + context = {'question_list': question_list} + return render_to_response('exam/index.html', context) + +def index(request): + """The start page. + """ + # Largely copied from Nishanth's quiz app. + user = request.user + if user.is_authenticated(): + return redirect("/exam/start/") + else: + try: + ip = request.META['REMOTE_ADDR'] + Quiz.objects.get(user_ip=ip) + return redirect("/exam/complete") + except Quiz.DoesNotExist: + pass + + if request.method == "POST": + form = UserRegisterForm(request.POST) + if form.is_valid(): + data = form.cleaned_data + + while True: + try: + username = gen_key(20) + new_user = User.objects.create_user(username, "temp@temp.com", "123") + break + except IntegrityError: + pass + + new_user.first_name = data['first_name'] + new_user.last_name = data['last_name'] + new_user.save() + + new_profile = Profile(user=new_user) + new_profile.roll_number = data['roll_number'] + new_profile.save() + + user = authenticate(username=username, password="123") + login(request, user) + return redirect("/exam/start/") + + else: + return render_to_response('exam/register.html',{'form':form}, + context_instance=RequestContext(request)) + else: + form = UserRegisterForm() + return render_to_response('exam/register.html',{'form':form}, + context_instance=RequestContext(request)) + +def show_question(request, q_id): + if len(q_id) == 0: + return redirect("/exam/complete") + else: + return question(request, q_id) + +def start(request): + user = request.user + try: + old_quiz = Quiz.objects.get(user=user) + q = old_quiz.current_question() + return show_question(request, q) + except Quiz.DoesNotExist: + ip = request.META['REMOTE_ADDR'] + key = gen_key(10) + new_quiz = Quiz(user=user, user_ip=ip, key=key) + + questions = [ str(_.id) for _ in Question.objects.all() ] + random.shuffle(questions) + questions = questions[:3] + + new_quiz.questions = "|".join(questions) + new_quiz.save() + q = new_quiz.current_question() + + return show_question(request, q) + +def question(request, q_id): + q = get_object_or_404(Question, pk=q_id) + try: + quiz = Quiz.objects.get(user=request.user) + except Quiz.DoesNotExist: + redirect('/exam/start') + context = {'question': q, 'quiz': quiz} + ci = RequestContext(request) + return render_to_response('exam/question.html', context, + context_instance=ci) + +def test_answer(func_code, test_code): + exec func_code + exec test_code + +def check(request, q_id): + user = request.user + question = get_object_or_404(Question, pk=q_id) + quiz = Quiz.objects.get(user=user) + answer = request.POST.get('answer') + skip = request.POST.get('skip', None) + + if skip is not None: + next_q = quiz.skip() + return show_question(request, next_q) + + # Otherwise we were asked to check. + retry = True + try: + test_answer(answer, question.test) + except: + type, value, tb = sys.exc_info() + info = traceback.extract_tb(tb) + fname, lineno, func, text = info[-1] + err = "{0}: {1} In code: {2}".format(type.__name__, str(value), text) + else: + retry = False + err = 'Correct answer' + + ci = RequestContext(request) + if retry: + context = {'question': question, 'error_message': err} + return render_to_response('exam/question.html', context, + context_instance=ci) + else: + next_q = quiz.answered_question(question.id) + return show_question(request, next_q) + +def complete(request): + return render_to_response('exam/complete.html') +
\ No newline at end of file |