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Diffstat (limited to 'testapp/exam/views.py')
| -rw-r--r-- | testapp/exam/views.py | 1470 |
1 files changed, 0 insertions, 1470 deletions
diff --git a/testapp/exam/views.py b/testapp/exam/views.py deleted file mode 100644 index f39f3c1..0000000 --- a/testapp/exam/views.py +++ /dev/null @@ -1,1470 +0,0 @@ -import random -import string -import os -import stat -from os.path import dirname, pardir, abspath, join, exists -import datetime -import collections -from django.http import HttpResponse -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 django.http import Http404 -from django.db.models import Sum -from django.views.decorators.csrf import csrf_exempt -from taggit.models import Tag -from itertools import chain -import json -# Local imports. -from testapp.exam.models import Quiz, Question, QuestionPaper, QuestionSet -from testapp.exam.models import Profile, Answer, AnswerPaper, User, TestCase -from testapp.exam.forms import UserRegisterForm, UserLoginForm, QuizForm,\ - QuestionForm, RandomQuestionForm, TestCaseFormSet,\ - QuestionFilterForm -from testapp.exam.xmlrpc_clients import code_server -from settings import URL_ROOT -from testapp.exam.models import AssignmentUpload - -# The directory where user data can be saved. -OUTPUT_DIR = abspath(join(dirname(__file__), 'output')) - - -def my_redirect(url): - """An overridden redirect to deal with URL_ROOT-ing. See settings.py - for details.""" - return redirect(URL_ROOT + url) - - -def my_render_to_response(template, context=None, **kwargs): - """Overridden render_to_response. - """ - if context is None: - context = {'URL_ROOT': URL_ROOT} - else: - context['URL_ROOT'] = URL_ROOT - return render_to_response(template, context, **kwargs) - - -def gen_key(no_of_chars): - """Generate a random key of the number of characters.""" - allowed_chars = string.digits+string.uppercase - return ''.join([random.choice(allowed_chars) for i in range(no_of_chars)]) - - -def get_user_dir(user): - """Return the output directory for the user.""" - - user_dir = join(OUTPUT_DIR, str(user.username)) - if not exists(user_dir): - os.mkdir(user_dir) - # Make it rwx by others. - os.chmod(user_dir, stat.S_IROTH | stat.S_IWOTH | stat.S_IXOTH - | stat.S_IRUSR | stat.S_IWUSR | stat.S_IXUSR - | stat.S_IRGRP | stat.S_IWGRP | stat.S_IXGRP) - return user_dir - - -def is_moderator(user): - """Check if the user is having moderator rights""" - if user.groups.filter(name='moderator').count() == 1: - return True - - -def fetch_questions(request): - """Fetch questions from database based on the given search conditions & - tags""" - set1 = set() - set2 = set() - first_tag = request.POST.get('first_tag') - first_condition = request.POST.get('first_condition') - second_tag = request.POST.get('second_tag') - second_condition = request.POST.get('second_condition') - third_tag = request.POST.get('third_tag') - question1 = set(Question.objects.filter(tags__name__in=[first_tag])) - question2 = set(Question.objects.filter(tags__name__in=[second_tag])) - question3 = set(Question.objects.filter(tags__name__in=[third_tag])) - if first_condition == 'and': - set1 = question1.intersection(question2) - if second_condition == 'and': - set2 = set1.intersection(question3) - else: - set2 = set1.union(question3) - else: - set1 = question1.union(question2) - if second_condition == 'and': - set2 = set1.intersection(question3) - else: - set2 = set1.union(question3) - return set2 - - -def index(request): - """The start page. - """ - user = request.user - if user.is_authenticated(): - if user.groups.filter(name='moderator').count() > 0: - return my_redirect('/exam/manage/') - return my_redirect("/exam/start/") - - return my_redirect("/exam/login/") - - -def user_register(request): - """ Register a new user. - Create a user and corresponding profile and store roll_number also.""" - - user = request.user - ci = RequestContext(request) - if user.is_authenticated(): - return my_redirect("/exam/start/") - - if request.method == "POST": - form = UserRegisterForm(request.POST) - if form.is_valid(): - data = form.cleaned_data - u_name, pwd = form.save() - new_user = authenticate(username=u_name, password=pwd) - login(request, new_user) - return my_redirect("/exam/start/") - else: - return my_render_to_response('exam/register.html', {'form': form}, - context_instance=ci) - else: - form = UserRegisterForm() - return my_render_to_response('exam/register.html', {'form': form}, - context_instance=ci) - - -def quizlist_user(request): - """Show All Quizzes that is available to logged-in user.""" - user = request.user - avail_quizzes = list(QuestionPaper.objects.filter(quiz__active=True)) - user_answerpapers = AnswerPaper.objects.filter(user=user) - quizzes_taken = user_answerpapers - pre_requisites = [] - context = {} - - if 'cannot_attempt' in request.GET: - context['cannot_attempt'] = True - - if user_answerpapers.count() == 0: - context['quizzes'] = avail_quizzes - context['user'] = user - context['quizzes_taken'] = None - return my_render_to_response("exam/quizzes_user.html", context) - - context['quizzes'] = avail_quizzes - context['user'] = user - context['quizzes_taken'] = quizzes_taken - return my_render_to_response("exam/quizzes_user.html", context) - - -def intro(request, questionpaper_id): - """Show introduction page before quiz starts""" - user = request.user - ci = RequestContext(request) - quest_paper = QuestionPaper.objects.get(id=questionpaper_id) - attempt_number = quest_paper.quiz.attempts_allowed - time_lag = quest_paper.quiz.time_between_attempts - if quest_paper.quiz.prerequisite: - try: - pre_quest = QuestionPaper.objects.get( - quiz=quest_paper.quiz.prerequisite) - answer_papers = AnswerPaper.objects.filter( - question_paper=pre_quest, user=user) - answer_papers_failed = AnswerPaper.objects.filter( - question_paper=pre_quest, user=user, passed=False) - if answer_papers.count() == answer_papers_failed.count(): - context = {'user': user, 'cannot_attempt': True} - return my_redirect("/exam/quizzes/?cannot_attempt=True") - except: - context = {'user': user, 'cannot_attempt': True} - return my_redirect("/exam/quizzes/?cannot_attempt=True") - - attempted_papers = AnswerPaper.objects.filter(question_paper=quest_paper, - user=user) - already_attempted = attempted_papers.count() - if already_attempted == 0: - context = {'user': user, 'paper_id': questionpaper_id,\ - 'attempt_num': already_attempted + 1} - return my_render_to_response('exam/intro.html', context, - context_instance=ci) - - if already_attempted == attempt_number: - inprogress, previous_attempt = _check_previous_attempt(attempted_papers, - already_attempted) - if inprogress: - return show_question(request, - previous_attempt.current_question(), - previous_attempt.attempt_number, - previous_attempt.question_paper.id) - else: - return my_redirect("/exam/quizzes") - - - if already_attempted < attempt_number or attempt_number < 0: - inprogress, previous_attempt = _check_previous_attempt(attempted_papers, - already_attempted) - if inprogress: - return show_question(request, - previous_attempt.current_question(), - previous_attempt.attempt_number, - previous_attempt.question_paper.id) - days_after_attempt = (datetime.datetime.today() - \ - previous_attempt.start_time).days - if days_after_attempt >= time_lag: - context = {'user': user, 'paper_id': questionpaper_id,\ - 'attempt_num': already_attempted + 1} - return my_render_to_response('exam/intro.html', context, - context_instance=ci) - else: - return my_redirect("/exam/quizzes/") - else: - return my_redirect("/exam/quizzes/") - - -def _check_previous_attempt(attempted_papers, already_attempted): - previous_attempt = attempted_papers[already_attempted-1] - previous_attempt_day = previous_attempt.start_time - today = datetime.datetime.today() - if previous_attempt.status == 'inprogress': - end_time = previous_attempt.end_time - quiz_time = previous_attempt.question_paper.quiz.duration*60 - if quiz_time > (today-previous_attempt_day).seconds: - return True, previous_attempt - else: - return False, previous_attempt - else: - return False, previous_attempt - -def results_user(request): - """Show list of Results of Quizzes that is taken by logged-in user.""" - user = request.user - papers = AnswerPaper.objects.filter(user=user) - quiz_marks = [] - for paper in papers: - marks_obtained = paper.marks_obtained - max_marks = paper.question_paper.total_marks - percentage = round((marks_obtained/max_marks)*100, 2) - temp = paper.question_paper.quiz.description, marks_obtained,\ - max_marks, percentage - quiz_marks.append(temp) - context = {'papers': quiz_marks} - return my_render_to_response("exam/results_user.html", context) - - -def edit_quiz(request): - """Edit the list of quizzes seleted by the user for editing.""" - - user = request.user - if not user.is_authenticated() or not is_moderator(user): - raise Http404('You are not allowed to view this page!') - quiz_list = request.POST.getlist('quizzes') - start_date = request.POST.getlist('start_date') - duration = request.POST.getlist('duration') - active = request.POST.getlist('active') - description = request.POST.getlist('description') - pass_criteria = request.POST.getlist('pass_criteria') - language = request.POST.getlist('language') - prerequisite = request.POST.getlist('prerequisite') - - for j, quiz_id in enumerate(quiz_list): - quiz = Quiz.objects.get(id=quiz_id) - quiz.start_date = start_date[j] - quiz.duration = duration[j] - quiz.active = active[j] - quiz.description = description[j] - quiz.pass_criteria = pass_criteria[j] - quiz.language = language[j] - quiz.prerequisite_id = prerequisite[j] - quiz.save() - return my_redirect("/exam/manage/showquiz/") - - -def edit_question(request): - """Edit the list of questions selected by the user for editing.""" - user = request.user - if not user.is_authenticated() or not is_moderator(user): - raise Http404('You are not allowed to view this page!') - question_list = request.POST.getlist('questions') - summary = request.POST.getlist('summary') - description = request.POST.getlist('description') - points = request.POST.getlist('points') - options = request.POST.getlist('options') - test = request.POST.getlist('test') - type = request.POST.getlist('type') - active = request.POST.getlist('active') - language = request.POST.getlist('language') - snippet = request.POST.getlist('snippet') - for j, question_id in enumerate(question_list): - question = Question.objects.get(id=question_id) - test_case_formset = TestCaseFormSet(request.POST, prefix='test', instance=question) - if test_case_formset.is_valid(): - test_case_instance = test_case_formset.save(commit=False) - for i in test_case_instance: - i.save() - - question.summary = summary[j] - question.description = description[j] - question.points = points[j] - question.options = options[j] - question.active = active[j] - question.language = language[j] - question.snippet = snippet[j] - question.ref_code_path = ref_code_path[j] - question.test = test[j] - question.type = type[j] - question.save() - return my_redirect("/exam/manage/questions") - - -def add_question(request, question_id=None): - """To add a new question in the database. - Create a new question and store it.""" - - def add_or_delete_test_form(post_request, instance): - request_copy = post_request.copy() - if 'add_test' in post_request: - request_copy['test-TOTAL_FORMS'] = int(request_copy['test-TOTAL_FORMS']) + 1 - elif 'delete_test' in post_request: - request_copy['test-TOTAL_FORMS'] = int(request_copy['test-TOTAL_FORMS']) - 1 - test_case_formset = TestCaseFormSet(request_copy, prefix='test', instance=instance) - return test_case_formset - - user = request.user - ci = RequestContext(request) - if not user.is_authenticated() or not is_moderator(user): - raise Http404('You are not allowed to view this page!') - if request.method == "POST": - form = QuestionForm(request.POST) - if form.is_valid(): - if question_id is None: - test_case_formset = add_or_delete_test_form(request.POST, form.save(commit=False)) - if 'save_question' in request.POST: - qtn = form.save(commit=False) - test_case_formset = TestCaseFormSet(request.POST, prefix='test', instance=qtn) - form.save() - question = Question.objects.order_by("-id")[0] - tags = form['tags'].data.split(',') - for i in range(0, len(tags)-1): - tag = tags[i].strip() - question.tags.add(tag) - if test_case_formset.is_valid(): - test_case_formset.save() - else: - return my_render_to_response('exam/add_question.html', - {'form': form, - 'formset': test_case_formset}, - context_instance=ci) - - return my_redirect("/exam/manage/questions") - - return my_render_to_response('exam/add_question.html', - {'form': form, - 'formset': test_case_formset}, - context_instance=ci) - - else: - d = Question.objects.get(id=question_id) - test_case_formset = add_or_delete_test_form(request.POST, d) - if 'save_question' in request.POST: - d.summary = form['summary'].data - d.description = form['description'].data - d.points = form['points'].data - d.options = form['options'].data - d.type = form['type'].data - d.active = form['active'].data - d.language = form['language'].data - d.snippet = form['snippet'].data - d.ref_code_path = form['ref_code_path'].data - d.test = form['test'].data - d.save() - question = Question.objects.get(id=question_id) - for tag in question.tags.all(): - question.tags.remove(tag) - tags = form['tags'].data.split(',') - for i in range(0, len(tags)-1): - tag = tags[i].strip() - question.tags.add(tag) - - test_case_formset = TestCaseFormSet(request.POST, prefix='test', instance=question) - if test_case_formset.is_valid(): - test_case_instance = test_case_formset.save(commit=False) - for i in test_case_instance: - i.save() - else: - return my_render_to_response('exam/add_question.html', - {'form': form, - 'formset': test_case_formset}, - context_instance=ci) - - - return my_redirect("/exam/manage/questions") - return my_render_to_response('exam/add_question.html', - {'form': form, - 'formset': test_case_formset}, - context_instance=ci) - - else: - test_case_formset = add_or_delete_test_form(request.POST, form.save(commit=False)) - return my_render_to_response('exam/add_question.html', - {'form': form, - 'formset': test_case_formset}, - context_instance=ci) - else: - form = QuestionForm() - test_case_formset = TestCaseFormSet(prefix='test', instance=Question()) - if question_id is None: - form = QuestionForm() - test_case_formset = TestCaseFormSet(prefix='test', instance=Question()) - return my_render_to_response('exam/add_question.html', - {'form': form, - 'formset': test_case_formset}, - context_instance=ci) - else: - d = Question.objects.get(id=question_id) - form = QuestionForm() - form.initial['summary'] = d.summary - form.initial['description'] = d.description - form.initial['points'] = d.points - form.initial['options'] = d.options - form.initial['type'] = d.type - form.initial['active'] = d.active - form.initial['language'] = d.language - form.initial['snippet'] = d.snippet - form.initial['ref_code_path'] = d.ref_code_path - form.initial['test'] = d.test - form_tags = d.tags.all() - form_tags_split = form_tags.values('name') - initial_tags = "" - for tag in form_tags_split: - initial_tags = initial_tags + str(tag['name']).strip() + "," - if (initial_tags == ","): - initial_tags = "" - form.initial['tags'] = initial_tags - - test_case_formset = TestCaseFormSet(prefix='test', - instance=d) - - return my_render_to_response('exam/add_question.html', - {'form': form, - 'formset': test_case_formset}, - context_instance=ci) - - -def add_quiz(request, quiz_id=None): - """To add a new quiz in the database. - Create a new quiz and store it.""" - - user = request.user - ci = RequestContext(request) - if not user.is_authenticated() or not is_moderator(user): - raise Http404('You are not allowed to view this page!') - if request.method == "POST": - form = QuizForm(request.POST) - if form.is_valid(): - data = form.cleaned_data - if quiz_id is None: - form.save() - quiz = Quiz.objects.order_by("-id")[0] - return my_redirect("/exam/manage/designquestionpaper") - else: - d = Quiz.objects.get(id=quiz_id) - d.start_date = form['start_date'].data - d.duration = form['duration'].data - d.active = form['active'].data - d.description = form['description'].data - d.pass_criteria = form['pass_criteria'].data - d.language = form['language'].data - d.prerequisite_id = form['prerequisite'].data - d.attempts_allowed = form['attempts_allowed'].data - d.time_between_attempts = form['time_between_attempts'].data - d.save() - quiz = Quiz.objects.get(id=quiz_id) - return my_redirect("/exam/manage/showquiz") - else: - return my_render_to_response('exam/add_quiz.html', - {'form': form}, - context_instance=ci) - else: - if quiz_id is None: - form = QuizForm() - return my_render_to_response('exam/add_quiz.html', - {'form': form}, - context_instance=ci) - else: - d = Quiz.objects.get(id=quiz_id) - form = QuizForm() - form.initial['start_date'] = d.start_date - form.initial['duration'] = d.duration - form.initial['description'] = d.description - form.initial['active'] = d.active - form.initial['pass_criteria'] = d.pass_criteria - form.initial['language'] = d.language - form.initial['prerequisite'] = d.prerequisite_id - form.initial['attempts_allowed'] = d.attempts_allowed - form.initial['time_between_attempts'] = d.time_between_attempts - return my_render_to_response('exam/add_quiz.html', - {'form': form}, - context_instance=ci) - - -def show_all_questionpapers(request, questionpaper_id=None): - user = request.user - ci = RequestContext(request) - if not user.is_authenticated() or not is_moderator(user): - raise Http404('You are not allowed to view this page!') - - if request.method == "POST" and request.POST.get('add') == "add": - return my_redirect("/exam/manage/designquestionpaper/" + - questionpaper_id) - - if request.method == "POST" and request.POST.get('delete') == "delete": - data = request.POST.getlist('papers') - q_paper = QuestionPaper.objects.get(id=questionpaper_id) - for i in data: - q_paper.questions.remove(Question.objects.get(id=i)) - question_paper = QuestionPaper.objects.all() - context = {'papers': question_paper} - return my_render_to_response('exam/showquestionpapers.html', context, - context_instance=ci) - if questionpaper_id is None: - qu_papers = QuestionPaper.objects.all() - context = {'papers': qu_papers} - return my_render_to_response('exam/showquestionpapers.html', context, - context_instance=ci) - else: - qu_papers = QuestionPaper.objects.get(id=questionpaper_id) - quiz = qu_papers.quiz - questions = qu_papers.questions.all() - context = {'papers': {'quiz': quiz, 'questions': questions}} - return my_render_to_response('exam/editquestionpaper.html', context, - context_instance=ci) - - -def automatic_questionpaper(request, questionpaper_id=None): - """Generate automatic question paper for a particular quiz""" - - user = request.user - ci = RequestContext(request) - if not user.is_authenticated() or not is_moderator(user): - raise Http404('You are not allowed to view this page!') - - if questionpaper_id is None: - if request.method == "POST": - if request.POST.get('save') == 'save': - quiz = Quiz.objects.order_by("-id")[0] - quest_paper = QuestionPaper() - questions = request.POST.getlist('questions') - tot_marks = 0 - for quest in questions: - q = Question.objects.get(id=quest) - tot_marks += q.points - quest_paper.quiz = quiz - quest_paper.total_marks = tot_marks - quest_paper.save() - for quest in questions: - q = Question.objects.get(id=quest) - quest_paper.fixed_questions.add(q) - return my_redirect('/exam/manage/showquiz') - else: - no_questions = int(request.POST.get('num_questions')) - fetched_questions = fetch_questions(request) - n = len(fetched_questions) - msg = '' - if (no_questions < n): - i = n - no_questions - for i in range(0, i): - fetched_questions.pop() - elif (no_questions > n): - msg = 'The given Criteria does not satisfy the number\ - of Questions...' - tags = Tag.objects.all() - context = {'data': {'questions': fetched_questions, - 'tags': tags, - 'msg': msg}} - return my_render_to_response( - 'exam/automatic_questionpaper.html', context, - context_instance=ci) - else: - tags = Tag.objects.all() - context = {'data': {'tags': tags}} - return my_render_to_response('exam/automatic_questionpaper.html', - context, context_instance=ci) - - else: - if request.method == "POST": - if request.POST.get('save') == 'save': - quest_paper = QuestionPaper.objects.get(id=questionpaper_id) - questions = request.POST.getlist('questions') - tot_marks = quest_paper.total_marks - for quest in questions: - q = Question.objects.get(id=quest) - tot_marks += q.points - quest_paper.total_marks = tot_marks - quest_paper.save() - for quest in questions: - q = Question.objects.get(id=quest) - quest_paper.questions.add(q) - return my_redirect('/exam/manage/showquiz') - else: - no_questions = int(request.POST.get('num_questions')) - fetched_questions = fetch_questions(request) - n = len(fetched_questions) - msg = '' - if(no_questions < n): - i = n - no_questions - for i in range(0, i): - fetched_questions.pop() - elif(no_questions > n): - msg = 'The given Criteria does not satisfy the number of \ - Questions...' - tags = Tag.objects.all() - context = {'data': {'questions': fetched_questions, - 'tags': tags, - 'msg': msg}} - return my_render_to_response( - 'exam/automatic_questionpaper.html', context, - context_instance=ci) - else: - tags = Tag.objects.all() - context = {'data': {'tags': tags}} - return my_render_to_response('exam/automatic_questionpaper.html', - context, context_instance=ci) - - -def manual_questionpaper(request, questionpaper_id=None): - user = request.user - ci = RequestContext(request) - if not user.is_authenticated() or not is_moderator(user): - raise Http404('You are not allowed to view this page!') - - if questionpaper_id is None: - if request.method == "POST": - if request.POST.get('save') == 'save': - questions = request.POST.getlist('questions') - quest_paper = QuestionPaper() - quiz = Quiz.objects.order_by("-id")[0] - tot_marks = 0 - for quest in questions: - q = Question.objects.get(id=quest) - tot_marks += q.points - quest_paper.quiz = quiz - quest_paper.total_marks = tot_marks - quest_paper.save() - for i in questions: - q = Question.objects.get(id=i) - quest_paper.questions.add(q) - return my_redirect('/exam/manage/showquiz') - else: - fetched_questions = fetch_questions(request) - n = len(fetched_questions) - msg = '' - if (n == 0): - msg = 'No matching Question found...' - tags = Tag.objects.all() - context = {'data': {'questions': fetched_questions, - 'tags': tags, 'msg': msg}} - return my_render_to_response('exam/manual_questionpaper.html', - context, - context_instance=ci) - else: - tags = Tag.objects.all() - context = {'data': {'tags': tags}} - return my_render_to_response('exam/manual_questionpaper.html', - context, context_instance=ci) - - else: - if request.method == "POST": - if request.POST.get('save') == 'save': - quest_paper = QuestionPaper.objects.get(id=questionpaper_id) - questions = request.POST.getlist('questions') - tot_marks = quest_paper.total_marks - for quest in questions: - q = Question.objects.get(id=quest) - tot_marks += q.points - quest_paper.total_marks = tot_marks - quest_paper.save() - for i in questions: - q = Question.objects.get(id=i) - quest_paper.questions.add(q) - return my_redirect('/exam/manage/showquiz') - else: - fetched_questions = fetch_questions(request) - n = len(fetched_questions) - msg = '' - if (n == 0): - msg = 'No matching Question found...' - tags = Tag.objects.all() - context = {'data': {'questions': fetched_questions, - 'tags': tags, 'msg': msg}} - return my_render_to_response('exam/manual_questionpaper.html', - context, - context_instance=ci) - else: - tags = Tag.objects.all() - context = {'data': {'tags': tags}} - return my_render_to_response('exam/manual_questionpaper.html', - context, context_instance=ci) - - -def prof_manage(request): - """Take credentials of the user with professor/moderator -rights/permissions and log in.""" - user = request.user - if user.is_authenticated() and is_moderator(user): - question_papers = QuestionPaper.objects.all() - users_per_paper = [] - for paper in question_papers: - answer_papers = AnswerPaper.objects.filter(question_paper=paper) - users_passed = AnswerPaper.objects.filter(question_paper=paper, - passed=True).count() - users_failed = AnswerPaper.objects.filter(question_paper=paper, - passed=False).count() - temp = paper, answer_papers, users_passed, users_failed - users_per_paper.append(temp) - context = {'user': user, 'users_per_paper': users_per_paper} - return my_render_to_response('manage.html', context) - return my_redirect('/exam/login/') - - -def user_login(request): - """Take the credentials of the user and log the user in.""" - - user = request.user - ci = RequestContext(request) - if user.is_authenticated(): - if user.groups.filter(name='moderator').count() > 0: - return my_redirect('/exam/manage/') - return my_redirect("/exam/intro/") - - if request.method == "POST": - form = UserLoginForm(request.POST) - if form.is_valid(): - user = form.cleaned_data - login(request, user) - if user.groups.filter(name='moderator').count() > 0: - return my_redirect('/exam/manage/') - return my_redirect('/exam/login/') - else: - context = {"form": form} - return my_render_to_response('exam/login.html', context, - context_instance=ci) - else: - form = UserLoginForm() - context = {"form": form} - return my_render_to_response('exam/login.html', context, - context_instance=ci) - - -def start(request, attempt_num=None, questionpaper_id=None): - """Check the user cedentials and if any quiz is available, - start the exam.""" - user = request.user - if questionpaper_id is None: - return my_redirect('/exam/quizzes/') - try: - """Right now the app is designed so there is only one active quiz - at a particular time.""" - questionpaper = QuestionPaper.objects.get(id=questionpaper_id) - except QuestionPaper.DoesNotExist: - msg = 'Quiz not found, please contact your '\ - 'instructor/administrator. Please login again thereafter.' - return complete(request, msg, attempt_num, questionpaper_id) - - try: - old_paper = AnswerPaper.objects.get( - question_paper=questionpaper, user=user, attempt_number=attempt_num) - q = old_paper.current_question() - return show_question(request, q, attempt_num, questionpaper_id) - except AnswerPaper.DoesNotExist: - ip = request.META['REMOTE_ADDR'] - key = gen_key(10) - try: - profile = user.get_profile() - except Profile.DoesNotExist: - msg = 'You do not have a profile and cannot take the quiz!' - raise Http404(msg) - - new_paper = questionpaper.make_answerpaper(user, ip, attempt_num) - # Make user directory. - user_dir = get_user_dir(user) - return start(request, attempt_num, questionpaper_id) - - -def get_questions(paper): - ''' - Takes answerpaper as an argument. Returns the total questions as - ordered dictionary, the questions yet to attempt and the questions - attempted - ''' - to_attempt = [] - submitted = [] - all_questions = [] - questions = {} - if paper.questions: - all_questions = (paper.questions).split('|') - if paper.questions_answered: - q_answered = (paper.questions_answered).split('|') - q_answered.sort() - submitted = q_answered - if paper.get_unanswered_questions(): - q_unanswered = paper.get_unanswered_questions() - q_unanswered.sort() - to_attempt = q_unanswered - for index, value in enumerate(all_questions, 1): - questions[value] = index - questions = collections.OrderedDict(sorted(questions.items(), key=lambda x:x[1])) - return questions, to_attempt, submitted - - -def question(request, q_id, attempt_num, questionpaper_id, success_msg=None): - """Check the credentials of the user and start the exam.""" - - user = request.user - if not user.is_authenticated(): - return my_redirect('/exam/login/') - q = get_object_or_404(Question, pk=q_id) - try: - q_paper = QuestionPaper.objects.get(id=questionpaper_id) - paper = AnswerPaper.objects.get( - user=request.user, attempt_number=attempt_num, question_paper=q_paper) - except AnswerPaper.DoesNotExist: - return my_redirect('/exam/start/') - if not paper.question_paper.quiz.active: - reason = 'The quiz has been deactivated!' - return complete(request, reason, questionpaper_id) - elif paper.end_time < datetime.datetime.now(): - reason = 'You have already attempted the quiz' - return complete(request, reason, questionpaper_id) - time_left = paper.time_left() - if time_left == 0: - return complete(request, reason='Your time is up!') - quiz_name = paper.question_paper.quiz.description - questions, to_attempt, submitted = get_questions(paper) - if success_msg is None: - context = {'question': q, 'questions': questions, 'paper': paper, - 'user': user, 'quiz_name': quiz_name, 'time_left': time_left, - 'to_attempt': to_attempt, 'submitted': submitted} - else: - context = {'question': q, 'questions': questions, 'paper': paper, - 'user': user, 'quiz_name': quiz_name, 'time_left': time_left, - 'success_msg': success_msg, 'to_attempt': to_attempt, - 'submitted': submitted} - if q.type == 'code': - skipped_answer = paper.answers.filter(question=q, skipped=True) - if skipped_answer: - context['last_attempt'] = skipped_answer[0].answer - ci = RequestContext(request) - return my_render_to_response('exam/question.html', context, - context_instance=ci) - - -def show_question(request, q_id, attempt_num, questionpaper_id, success_msg=None): - """Show a question if possible.""" - user = request.user - q_paper = QuestionPaper.objects.get(id=questionpaper_id) - paper = AnswerPaper.objects.get(user=request.user, attempt_number=attempt_num, - question_paper=q_paper) - if not user.is_authenticated() or paper.end_time < datetime.datetime.now(): - return my_redirect('/exam/login/') - old_qid = request.POST.get('question_id') - if old_qid is not None: - quest = Question.objects.get(pk=old_qid) - user_code = request.POST.get('answer') - if quest.type == 'code': - old_skipped = paper.answers.filter(question=quest, skipped=True) - _save_skipped_answer(old_skipped, user_code, paper, quest) - if len(q_id) == 0: - msg = 'Congratulations! You have successfully completed the quiz.' - return complete(request, msg, attempt_num, questionpaper_id) - else: - return question(request, q_id, attempt_num, questionpaper_id, success_msg) - - -def _save_skipped_answer(old_skipped, user_answer, paper, question): - """ - Saves the answer on skip. Only the code questions are saved. - Snippet is not saved with the answer. - """ - if old_skipped: - skipped_answer = old_skipped[0] - skipped_answer.answer=user_answer - skipped_answer.save() - else: - skipped_answer = Answer(question=question, answer=user_answer, - correct=False, skipped=True) - skipped_answer.save() - paper.answers.add(skipped_answer) - -def check(request, q_id, attempt_num=None, 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, attempt_number=attempt_num, - question_paper=q_paper) - if q_id in paper.questions_answered: - next_q = paper.skip(q_id) - return show_question(request, next_q, attempt_num, questionpaper_id) - - 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) - test_cases = TestCase.objects.filter(question=question) - - snippet_code = request.POST.get('snippet') - user_code = request.POST.get('answer') - skip = request.POST.get('skip', None) - success_msg = False - success = True - if skip is not None: - if question.type == 'code': - old_skipped = paper.answers.filter(question=question, skipped=True) - _save_skipped_answer(old_skipped, user_code, paper, question) - next_q = paper.skip(q_id) - return show_question(request, next_q, attempt_num, 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') - elif question.type == 'upload': - assign = AssignmentUpload() - assign.user = user.profile - assign.assignmentQuestion = question - # if time-up at upload question then the form is submitted without - # validation - if 'assignment' in request.FILES: - assign.assignmentFile = request.FILES['assignment'] - assign.save() - user_answer = 'ASSIGNMENT UPLOADED' - else: - user_code = request.POST.get('answer') - user_answer = snippet_code + "\n" + user_code if snippet_code else 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. - if not question.type == 'upload': - json_data = question.consolidate_answer_data(test_cases, user_answer) \ - if question.type == 'code' else None - correct, result = validate_answer(user, user_answer, question, json_data) - if correct: - new_answer.correct = correct - new_answer.marks = question.points - new_answer.error = result.get('error') - success_msg = True - else: - new_answer.error = result.get('error') - new_answer.save() - - time_left = paper.time_left() - if not result.get('success'): # Should only happen for non-mcq questions. - if time_left == 0: - reason = 'Your time is up!' - return complete(request, reason, attempt_num, questionpaper_id) - if not paper.question_paper.quiz.active: - reason = 'The quiz has been deactivated!' - return complete(request, reason, attempt_num, questionpaper_id) - if not paper.question_paper.quiz.active: - reason = 'The quiz has been deactivated!' - return complete(request, reason, attempt_num, questionpaper_id) - questions, to_attempt, submitted = get_questions(paper) - old_answer = paper.answers.filter(question=question, skipped=True) - if old_answer: - old_answer[0].answer = user_code - old_answer[0].save() - context = {'question': question, 'error_message': result.get('error'), - 'paper': paper, 'last_attempt': user_code, - 'quiz_name': paper.question_paper.quiz.description, - 'time_left': time_left, 'questions': questions, - 'to_attempt': to_attempt, 'submitted': submitted} - 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, attempt_num, questionpaper_id) - - # Display the same question if user_answer is None - elif not user_answer: - msg = "Please submit a valid option or code" - time_left = paper.time_left() - questions, to_attempt, submitted = get_questions(paper) - context = {'question': question, 'error_message': msg, - 'paper': paper, 'quiz_name': paper.question_paper.quiz.description, - 'time_left': time_left, 'questions': questions, - 'to_attempt': to_attempt, 'submitted': submitted} - ci = RequestContext(request) - - return my_render_to_response('exam/question.html', context, - context_instance=ci) - else: - next_q = paper.completed_question(question.id) - return show_question(request, next_q, attempt_num, - questionpaper_id, success_msg) - - -def validate_answer(user, user_answer, question, json_data=None): - """ - Checks whether the answer submitted by the user is right or wrong. - If right then returns correct = True, success and - message = Correct answer. - success is True for MCQ's and multiple correct choices because - only one attempt are allowed for them. - For code questions success is True only if the answer is correct. - """ - - result = {'success': True, 'error': 'Incorrect answer'} - correct = False - - if user_answer is not None: - if question.type == 'mcq': - if user_answer.strip() == question.test.strip(): - correct = True - message = 'Correct answer' - elif question.type == 'mcc': - answers = set(question.test.splitlines()) - if set(user_answer) == answers: - correct = True - message = 'Correct answer' - elif question.type == 'code': - user_dir = get_user_dir(user) - json_result = code_server.run_code(question.language, json_data, user_dir) - result = json.loads(json_result) - if result.get('success'): - correct = True - - return correct, result - -def get_question_labels(request, attempt_num=None, questionpaper_id=None): - """Get the question number show in template for corresponding - question id.""" - unattempted_questions = [] - submitted_questions = [] - try: - q_paper = QuestionPaper.objects.get(id=questionpaper_id) - paper = AnswerPaper.objects.get( - user=request.user, attempt_number=attempt_num, question_paper=q_paper) - except AnswerPaper.DoesNotExist: - return my_redirect('/exam/start/') - questions, to_attempt, submitted = get_questions(paper) - for q_id, question_label in questions.items(): - if q_id in to_attempt: - unattempted_questions.append(question_label) - else: - submitted_questions.append(question_label) - unattempted_questions.sort() - submitted_questions.sort() - return unattempted_questions, submitted_questions - -def quit(request, attempt_num=None, questionpaper_id=None): - """Show the quit page when the user logs out.""" - unattempted_questions, submitted_questions = get_question_labels(request, - attempt_num, questionpaper_id) - context = {'id': questionpaper_id, 'attempt_num': attempt_num, - 'unattempted': unattempted_questions, - 'submitted': submitted_questions} - return my_render_to_response('exam/quit.html', context, - context_instance=RequestContext(request)) - - -def complete(request, reason=None, attempt_num=None, questionpaper_id=None): - """Show a page to inform user that the quiz has been compeleted.""" - - user = request.user - if questionpaper_id is None: - logout(request) - message = reason or "You are successfully logged out." - context = {'message': message} - return my_render_to_response('exam/complete.html', context) - else: - unattempted_questions, submitted_questions = get_question_labels(request, - attempt_num, questionpaper_id) - q_paper = QuestionPaper.objects.get(id=questionpaper_id) - paper = AnswerPaper.objects.get(user=user, question_paper=q_paper, - attempt_number=attempt_num) - paper.update_marks_obtained() - paper.update_percent() - paper.update_passed() - paper.end_time = datetime.datetime.now() - paper.update_status() - paper.save() - obt_marks = paper.marks_obtained - tot_marks = paper.question_paper.total_marks - if obt_marks == paper.question_paper.total_marks: - context = {'message': "Hurray ! You did an excellent job.\ - you answered all the questions correctly.\ - You have been logged out successfully,\ - Thank You !", - 'unattempted': unattempted_questions, - 'submitted': submitted_questions} - return my_render_to_response('exam/complete.html', context) - else: - message = reason or "You are successfully logged out" - context = {'message': message, - 'unattempted': unattempted_questions, - 'submitted': submitted_questions} - return my_render_to_response('exam/complete.html', context) - no = False - message = reason or 'The quiz has been completed. Thank you.' - if user.groups.filter(name='moderator').count() > 0: - message = 'You are successfully Logged out.' - if request.method == 'POST' and 'no' in request.POST: - no = True - if not no: - # Logout the user and quit with the message given. - answer_paper = AnswerPaper.objects.get(id=answerpaper_id) - answer_paper.end_time = datetime.datetime.now() - answer_paper.save() - return my_redirect('/exam/quizzes/') - else: - return my_redirect('/exam/') - - -def monitor(request, questionpaper_id=None): - """Monitor the progress of the papers taken so far.""" - - user = request.user - ci = RequestContext(request) - if not user.is_authenticated() or not is_moderator(user): - raise Http404('You are not allowed to view this page!') - - if questionpaper_id is None: - q_paper = QuestionPaper.objects.all() - context = {'papers': [], - 'quiz': None, - 'quizzes': q_paper} - return my_render_to_response('exam/monitor.html', context, - context_instance=ci) - # quiz_id is not None. - try: - q_paper = QuestionPaper.objects.get(id=questionpaper_id) - except QuestionPaper.DoesNotExist: - papers = [] - q_paper = None - else: - papers = AnswerPaper.objects.filter(question_paper=q_paper).annotate( - total=Sum('answers__marks')).order_by('-total') - - context = {'papers': papers, 'quiz': q_paper, 'quizzes': None} - return my_render_to_response('exam/monitor.html', context, - context_instance=ci) - - -def get_user_data(username): - """For a given username, this returns a dictionary of important data - related to the user including all the user's answers submitted. - """ - user = User.objects.get(username=username) - papers = AnswerPaper.objects.filter(user=user) - - data = {} - try: - profile = user.get_profile() - except Profile.DoesNotExist: - # Admin user may have a paper by accident but no profile. - profile = None - data['user'] = user - data['profile'] = profile - data['papers'] = papers - return data - - -def show_all_users(request): - """Shows all the users who have taken various exams/quiz.""" - - user = request.user - if not user.is_authenticated() or not is_moderator(user): - raise Http404('You are not allowed to view this page !') - user = User.objects.filter(username__contains="") - questionpaper = AnswerPaper.objects.all() - context = {'question': questionpaper} - return my_render_to_response('exam/showusers.html', context, - context_instance=RequestContext(request)) - - -def show_all_quiz(request): - """Generates a list of all the quizzes - that are currently in the database.""" - - user = request.user - ci = RequestContext(request) - if not user.is_authenticated() or not is_moderator(user): - raise Http404('You are not allowed to view this page !') - - if request.method == 'POST' and request.POST.get('delete') == 'delete': - data = request.POST.getlist('quiz') - - if data is None: - quizzes = Quiz.objects.all() - context = {'papers': [], - 'quiz': None, - 'quizzes': quizzes} - return my_render_to_response('exam/show_quiz.html', context, - context_instance=ci) - else: - for i in data: - quiz = Quiz.objects.get(id=i).delete() - quizzes = Quiz.objects.all() - context = {'papers': [], - 'quiz': None, - 'quizzes': quizzes} - return my_render_to_response('exam/show_quiz.html', context, - context_instance=ci) - - elif request.method == 'POST' and request.POST.get('edit') == 'edit': - data = request.POST.getlist('quiz') - forms = [] - for j in data: - d = Quiz.objects.get(id=j) - form = QuizForm() - form.initial['start_date'] = d.start_date - form.initial['duration'] = d.duration - form.initial['active'] = d.active - form.initial['description'] = d.description - form.initial['pass_criteria'] = d.pass_criteria - form.initial['language'] = d.language - form.initial['prerequisite'] = d.prerequisite_id - forms.append(form) - return my_render_to_response('exam/edit_quiz.html', - {'forms': forms, 'data': data}, - context_instance=ci) - else: - quizzes = Quiz.objects.all() - context = {'papers': [], - 'quiz': None, - 'quizzes': quizzes} - return my_render_to_response('exam/show_quiz.html', context, - context_instance=ci) - - -@csrf_exempt -def ajax_questions_filter(request): - """Ajax call made when filtering displayed questions.""" - - filter_dict = {} - question_type = request.POST.get('question_type') - marks = request.POST.get('marks') - language = request.POST.get('language') - - if question_type != "select": - filter_dict['type'] = str(question_type) - - if marks != "select": - filter_dict['points'] = marks - - if language != "select": - filter_dict['language'] = str(language) - - questions = list(Question.objects.filter(**filter_dict)) - - return my_render_to_response('exam/ajax_question_filter.html', - {'questions': questions}) - - -def show_all_questions(request): - """Show a list of all the questions currently in the databse.""" - - user = request.user - ci = RequestContext(request) - if not user.is_authenticated() or not is_moderator(user): - raise Http404("You are not allowed to view this page !") - - if request.method == 'POST' and request.POST.get('delete') == 'delete': - data = request.POST.getlist('question') - if data is None: - questions = Question.objects.all() - form = QuestionFilterForm() - context = {'papers': [], - 'question': None, - 'questions': questions, - 'form': form - } - return my_render_to_response('exam/showquestions.html', context, - context_instance=ci) - else: - for i in data: - question = Question.objects.get(id=i).delete() - questions = Question.objects.all() - form = QuestionFilterForm() - context = {'papers': [], - 'question': None, - 'questions': questions, - 'form': form - } - return my_render_to_response('exam/showquestions.html', context, - context_instance=ci) - elif request.method == 'POST' and request.POST.get('edit') == 'edit': - data = request.POST.getlist('question') - - forms = [] - formsets = [] - for j in data: - d = Question.objects.get(id=j) - form = QuestionForm() - form.initial['summary'] = d.summary - form.initial['description'] = d.description - form.initial['points'] = d.points - form.initial['options'] = d.options - form.initial['type'] = d.type - form.initial['active'] = d.active - form.initial['language'] = d.language - form.initial['snippet'] = d.snippet - form.initial['ref_code_path'] = d.ref_code_path - form.initial['test'] = d.test - form_tags = d.tags.all() - form_tags_split = form_tags.values('name') - initial_tags = "" - for tag in form_tags_split: - initial_tags = initial_tags + str(tag['name']).strip() + "," - if (initial_tags == ","): - initial_tags = "" - form.initial['tags'] = initial_tags - forms.append(form) - test_case_formset = TestCaseFormSet(prefix='test', instance=d) - formsets.append(test_case_formset) - data_list = zip(forms, formsets) - - return my_render_to_response('exam/edit_question.html', - {'data': data, - 'data_list': data_list}, - context_instance=ci) - else: - questions = Question.objects.all() - form = QuestionFilterForm() - context = {'papers': [], - 'question': None, - 'questions': questions, - 'form': form - } - return my_render_to_response('exam/showquestions.html', context, - context_instance=ci) - - -def user_data(request, username): - """Render user data.""" - - current_user = request.user - if not current_user.is_authenticated() or not is_moderator(current_user): - raise Http404('You are not allowed to view this page!') - - data = get_user_data(username) - - context = {'data': data} - return my_render_to_response('exam/user_data.html', context, - context_instance=RequestContext(request)) - - -def grade_user(request, username): - """Present an interface with which we can easily grade a user's papers - and update all their marks and also give comments for each paper. - """ - current_user = request.user - ci = RequestContext(request) - if not current_user.is_authenticated() or not is_moderator(current_user): - raise Http404('You are not allowed to view this page!') - - data = get_user_data(username) - if request.method == 'POST': - papers = data['papers'] - for paper in papers: - for question, answers in paper.get_question_answers().iteritems(): - marks = float(request.POST.get('q%d_marks' % question.id)) - last_ans = answers[-1] - last_ans.marks = marks - last_ans.save() - paper.comments = request.POST.get( - 'comments_%d' % paper.question_paper.id) - paper.save() - - context = {'data': data} - return my_render_to_response('exam/user_data.html', context, - context_instance=ci) - else: - context = {'data': data} - return my_render_to_response('exam/grade_user.html', context, - context_instance=ci) - - -@csrf_exempt -def ajax_questionpaper(request, query): - """ - During question paper creation, ajax call made to get question details. - """ - if query == 'marks': - question_type = request.POST.get('question_type') - questions = Question.objects.filter(type=question_type) - marks = questions.values_list('points').distinct() - return my_render_to_response('exam/ajax_marks.html', {'marks': marks}) - elif query == 'questions': - question_type = request.POST['question_type'] - marks_selected = request.POST['marks'] - fixed_questions = request.POST.getlist('fixed_list[]') - fixed_question_list = ",".join(fixed_questions).split(',') - random_questions = request.POST.getlist('random_list[]') - random_question_list = ",".join(random_questions).split(',') - question_list = fixed_question_list + random_question_list - questions = list(Question.objects.filter(type=question_type, - points=marks_selected)) - questions = [question for question in questions \ - if not str(question.id) in question_list] - return my_render_to_response('exam/ajax_questions.html', - {'questions': questions}) - - -def design_questionpaper(request): - user = request.user - ci = RequestContext(request) - - if not user.is_authenticated() or not is_moderator(user): - raise Http404('You are not allowed to view this page!') - - if request.method == 'POST': - fixed_questions = request.POST.getlist('fixed') - random_questions = request.POST.getlist('random') - random_number = request.POST.getlist('number') - is_shuffle = request.POST.get('shuffle_questions', False) - if is_shuffle == 'on': - is_shuffle = True - - question_paper = QuestionPaper(shuffle_questions=is_shuffle) - quiz = Quiz.objects.order_by("-id")[0] - tot_marks = 0 - question_paper.quiz = quiz - question_paper.total_marks = tot_marks - question_paper.save() - if fixed_questions: - fixed_questions_ids = ",".join(fixed_questions) - fixed_questions_ids_list = fixed_questions_ids.split(',') - for question_id in fixed_questions_ids_list: - question_paper.fixed_questions.add(question_id) - if random_questions: - for random_question, num in zip(random_questions, random_number): - qid = random_question.split(',')[0] - question = Question.objects.get(id=int(qid)) - marks = question.points - question_set = QuestionSet(marks=marks, num_questions=num) - question_set.save() - for question_id in random_question.split(','): - question_set.questions.add(question_id) - question_paper.random_questions.add(question_set) - question_paper.update_total_marks() - question_paper.save() - return my_redirect('/exam/manage/showquiz') - else: - form = RandomQuestionForm() - context = {'form': form} - return my_render_to_response('exam/design_questionpaper.html', - context, context_instance=ci) |