import os import csv from django.http import HttpResponse, JsonResponse from django.contrib.auth import login, logout, authenticate from django.shortcuts import render, get_object_or_404, redirect from django.template import Context, Template from django.http import Http404 from django.db.models import Max, Q, F from django.views.decorators.csrf import csrf_exempt from django.contrib.auth.decorators import login_required from django.contrib.auth.models import Group from django.forms.models import inlineformset_factory from django.utils import timezone from django.core.exceptions import ( MultipleObjectsReturned, ObjectDoesNotExist ) from taggit.models import Tag import json import six from textwrap import dedent import zipfile from markdown import Markdown try: from StringIO import StringIO as string_io except ImportError: from io import BytesIO as string_io import re # Local imports. from yaksh.code_server import get_result as get_result_from_code_server from yaksh.models import ( Answer, AnswerPaper, AssignmentUpload, Course, FileUpload, FloatTestCase, HookTestCase, IntegerTestCase, McqTestCase, Profile, QuestionPaper, QuestionSet, Quiz, Question, StandardTestCase, StdIOBasedTestCase, StringTestCase, TestCase, User, get_model_class, FIXTURES_DIR_PATH, MOD_GROUP_NAME, Lesson, LessonFile, LearningUnit, LearningModule, CourseStatus, question_types ) from yaksh.forms import ( UserRegisterForm, UserLoginForm, QuizForm, QuestionForm, QuestionFilterForm, CourseForm, ProfileForm, UploadFileForm, FileForm, QuestionPaperForm, LessonForm, LessonFileForm, LearningModuleForm, ExerciseForm ) from yaksh.settings import SERVER_POOL_PORT, SERVER_HOST_NAME from .settings import URL_ROOT from .file_utils import extract_files, is_csv from .send_emails import (send_user_mail, generate_activation_key, send_bulk_mail) from .decorators import email_verified, has_profile 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(request, 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(request, template, context, **kwargs) def is_moderator(user, group_name=MOD_GROUP_NAME): """Check if the user is having moderator rights""" try: group = Group.objects.get(name=group_name) return user.profile.is_moderator and user in group.user_set.all() except Profile.DoesNotExist: return False except Group.DoesNotExist: return False def add_as_moderator(users, group_name=MOD_GROUP_NAME): """ add users to moderator group """ try: Group.objects.get(name=group_name) except Group.DoesNotExist: raise Http404('The Group {0} does not exist.'.format(group_name)) for user in users: if not is_moderator(user): user.profile.is_moderator = True user.profile.save() CSV_FIELDS = ['name', 'username', 'roll_number', 'institute', 'department', 'questions', 'marks_obtained', 'out_of', 'percentage', 'status'] def get_html_text(md_text): """Takes markdown text and converts it to html""" return Markdown().convert(md_text) @email_verified def index(request, next_url=None): """The start page. """ user = request.user if user.is_authenticated(): if is_moderator(user): return my_redirect('/exam/manage/' if not next_url else next_url) return my_redirect("/exam/quizzes/" if not next_url else next_url) 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 if user.is_authenticated(): return my_redirect("/exam/quizzes/") context = {} if request.method == "POST": form = UserRegisterForm(request.POST) if form.is_valid(): u_name, pwd, user_email, key = form.save() new_user = authenticate(username=u_name, password=pwd) login(request, new_user) if user_email and key: success, msg = send_user_mail(user_email, key) context = {'activation_msg': msg} return my_render_to_response( request, 'yaksh/activation_status.html', context ) return index(request) else: return my_render_to_response( request, 'yaksh/register.html', {'form': form} ) else: form = UserRegisterForm() return my_render_to_response( request, 'yaksh/register.html', {'form': form} ) def user_logout(request): """Show a page to inform user that the quiz has been compeleted.""" logout(request) context = {'message': "You have been logged out successfully"} return my_render_to_response(request, 'yaksh/complete.html', context) @login_required @has_profile @email_verified def quizlist_user(request, enrolled=None, msg=None): """Show All Quizzes that is available to logged-in user.""" user = request.user if request.method == "POST": course_code = request.POST.get('course_code') hidden_courses = Course.objects.get_hidden_courses(code=course_code) courses = hidden_courses if hidden_courses else None title = 'Search' elif enrolled is not None: courses = user.students.all() title = 'Enrolled Courses' else: courses = Course.objects.filter( active=True, is_trial=False ).exclude( ~Q(requests=user), ~Q(rejected=user), hidden=True ) title = 'All Courses' context = { 'user': user, 'courses': courses, 'title': title, 'msg': msg } return my_render_to_response(request, "yaksh/quizzes_user.html", context) @login_required @email_verified def results_user(request): """Show list of Results of Quizzes that is taken by logged-in user.""" user = request.user papers = AnswerPaper.objects.get_user_answerpapers(user) context = {'papers': papers} return my_render_to_response(request, "yaksh/results_user.html", context) @login_required @email_verified def add_question(request, question_id=None): user = request.user test_case_type = None if question_id is None: question = Question(user=user) question.save() else: question = Question.objects.get(id=question_id) if request.method == "POST" and 'delete_files' in request.POST: remove_files_id = request.POST.getlist('clear') if remove_files_id: files = FileUpload.objects.filter(id__in=remove_files_id) for file in files: file.remove() if request.method == 'POST': qform = QuestionForm(request.POST, instance=question) fileform = FileForm(request.POST, request.FILES) files = request.FILES.getlist('file_field') extract_files_id = request.POST.getlist('extract') hide_files_id = request.POST.getlist('hide') if files: for file in files: FileUpload.objects.get_or_create(question=question, file=file) if extract_files_id: files = FileUpload.objects.filter(id__in=extract_files_id) for file in files: file.set_extract_status() if hide_files_id: files = FileUpload.objects.filter(id__in=hide_files_id) for file in files: file.toggle_hide_status() formsets = [] for testcase in TestCase.__subclasses__(): formset = inlineformset_factory(Question, testcase, extra=0, fields='__all__') formsets.append(formset( request.POST, request.FILES, instance=question ) ) files = request.FILES.getlist('file_field') uploaded_files = FileUpload.objects.filter(question_id=question.id) if qform.is_valid(): question = qform.save(commit=False) question.user = user question.save() # many-to-many field save function used to save the tags qform.save_m2m() for formset in formsets: if formset.is_valid(): formset.save() test_case_type = request.POST.get('case_type', None) else: context = { 'qform': qform, 'fileform': fileform, 'question': question, 'formsets': formsets, 'uploaded_files': uploaded_files } return my_render_to_response( request, "yaksh/add_question.html", context ) qform = QuestionForm(instance=question) fileform = FileForm() uploaded_files = FileUpload.objects.filter(question_id=question.id) formsets = [] for testcase in TestCase.__subclasses__(): if test_case_type == testcase.__name__.lower(): formset = inlineformset_factory( Question, testcase, extra=1, fields='__all__' ) else: formset = inlineformset_factory( Question, testcase, extra=0, fields='__all__' ) formsets.append( formset( instance=question, initial=[{'type': test_case_type}] ) ) context = {'qform': qform, 'fileform': fileform, 'question': question, 'formsets': formsets, 'uploaded_files': uploaded_files} return my_render_to_response( request, "yaksh/add_question.html", context ) @login_required @email_verified def add_quiz(request, quiz_id=None, course_id=None): """To add a new quiz in the database. Create a new quiz and store it.""" user = request.user if not is_moderator(user): raise Http404('You are not allowed to view this course !') if quiz_id: quiz = get_object_or_404(Quiz, pk=quiz_id) if quiz.creator != user and not course_id: raise Http404('This quiz does not belong to you') else: quiz = None if course_id: course = get_object_or_404(Course, pk=course_id) if not course.is_creator(user) and not course.is_teacher(user): raise Http404('This quiz does not belong to you') context = {} if request.method == "POST": form = QuizForm(request.POST, instance=quiz) if form.is_valid(): if quiz is None: form.instance.creator = user form.save() if not course_id: return my_redirect("/exam/manage/courses/all_quizzes/") else: return my_redirect("/exam/manage/courses/") else: form = QuizForm(instance=quiz) context["course_id"] = course_id context["quiz"] = quiz context["form"] = form return my_render_to_response(request, 'yaksh/add_quiz.html', context) @login_required @email_verified def add_exercise(request, quiz_id=None, course_id=None): user = request.user if not is_moderator(user): raise Http404('You are not allowed to view this course !') if quiz_id: quiz = get_object_or_404(Quiz, pk=quiz_id) if quiz.creator != user and not course_id: raise Http404('This quiz does not belong to you') else: quiz = None if course_id: course = get_object_or_404(Course, pk=course_id) if not course.is_creator(user) and not course.is_teacher(user): raise Http404('This Course does not belong to you') context = {} if request.method == "POST": form = ExerciseForm(request.POST, instance=quiz) if form.is_valid(): if quiz is None: form.instance.creator = user quiz = form.save(commit=False) quiz.is_exercise = True quiz.time_between_attempts = 0 quiz.weightage = 0 quiz.allow_skip = False quiz.attempts_allowed = -1 quiz.duration = 1000 quiz.pass_criteria = 0 quiz.save() if not course_id: return my_redirect("/exam/manage/courses/all_quizzes/") else: return my_redirect("/exam/manage/courses/") else: form = ExerciseForm(instance=quiz) context["exercise"] = quiz context["course_id"] = course_id context["form"] = form return my_render_to_response(request, 'yaksh/add_exercise.html', context) @login_required @has_profile @email_verified def prof_manage(request, msg=None): """Take credentials of the user with professor/moderator rights/permissions and log in.""" user = request.user if not user.is_authenticated(): return my_redirect('/exam/login') if not is_moderator(user): return my_redirect('/exam/') courses = Course.objects.filter(Q(creator=user) | Q(teachers=user), is_trial=False) trial_paper = AnswerPaper.objects.filter( user=user, question_paper__quiz__is_trial=True, course__is_trial=True ) if request.method == "POST": delete_paper = request.POST.getlist('delete_paper') for answerpaper_id in delete_paper: answerpaper = AnswerPaper.objects.get(id=answerpaper_id) qpaper = answerpaper.question_paper answerpaper.course.remove_trial_modules() answerpaper.course.delete() if qpaper.quiz.is_trial: qpaper.quiz.delete() else: if qpaper.answerpaper_set.count() == 1: qpaper.quiz.delete() else: answerpaper.delete() context = {'user': user, 'courses': courses, 'trial_paper': trial_paper, 'msg': msg } return my_render_to_response( request, 'yaksh/moderator_dashboard.html', context ) def user_login(request): """Take the credentials of the user and log the user in.""" user = request.user context = {} if user.is_authenticated(): return index(request) next_url = request.GET.get('next') if request.method == "POST": form = UserLoginForm(request.POST) if form.is_valid(): user = form.cleaned_data login(request, user) return index(request, next_url) else: context = {"form": form} else: form = UserLoginForm() context = {"form": form} return my_render_to_response(request, 'yaksh/login.html', context) @login_required @email_verified def start(request, questionpaper_id=None, attempt_num=None, course_id=None, module_id=None): """Check the user cedentials and if any quiz is available, start the exam.""" user = request.user # check conditions try: quest_paper = QuestionPaper.objects.get(id=questionpaper_id) except QuestionPaper.DoesNotExist: msg = 'Quiz not found, please contact your '\ 'instructor/administrator.' if is_moderator(user): return prof_manage(request, msg=msg) return view_module(request, module_id=module_id, course_id=course_id, msg=msg) if not quest_paper.has_questions(): msg = 'Quiz does not have Questions, please contact your '\ 'instructor/administrator.' if is_moderator(user): return prof_manage(request, msg=msg) return view_module(request, module_id=module_id, course_id=course_id, msg=msg) course = Course.objects.get(id=course_id) learning_module = course.learning_module.get(id=module_id) learning_unit = learning_module.learning_unit.get(quiz=quest_paper.quiz.id) # unit module active status if not learning_module.active: return view_module(request, module_id, course_id) # unit module prerequiste check if learning_module.has_prerequisite(): if not learning_module.is_prerequisite_passed(user, course): msg = "You have not completed the module previous to {0}".format( learning_module.name) return course_modules(request, course_id, msg) # is user enrolled in the course if not course.is_enrolled(user): msg = 'You are not enrolled in {0} course'.format(course.name) if is_moderator(user): return prof_manage(request, msg=msg) return quizlist_user(request, msg=msg) # if course is active and is not expired if not course.active or not course.is_active_enrollment(): msg = "{0} is either expired or not active".format(course.name) if is_moderator(user): return prof_manage(request, msg=msg) return quizlist_user(request, msg=msg) # is quiz is active and is not expired if quest_paper.quiz.is_expired() or not quest_paper.quiz.active: msg = "{0} is either expired or not active".format( quest_paper.quiz.description) if is_moderator(user): return prof_manage(request, msg=msg) return view_module(request, module_id=module_id, course_id=course_id, msg=msg) # prerequisite check and passing criteria for quiz if learning_unit.has_prerequisite(): if not learning_unit.is_prerequisite_passed( user, learning_module, course): msg = "You have not completed the previous Lesson/Quiz/Exercise" if is_moderator(user): return prof_manage(request, msg=msg) return view_module(request, module_id=module_id, course_id=course_id, msg=msg) # update course status with current unit _update_unit_status(course_id, user, learning_unit) # if any previous attempt last_attempt = AnswerPaper.objects.get_user_last_attempt( quest_paper, user, course_id) if last_attempt and last_attempt.is_attempt_inprogress(): return show_question( request, last_attempt.current_question(), last_attempt, course_id=course_id, module_id=module_id, previous_question=last_attempt.current_question() ) # allowed to start if not quest_paper.can_attempt_now(user, course_id)[0]: msg = quest_paper.can_attempt_now(user, course_id)[1] if is_moderator(user): return prof_manage(request, msg=msg) return view_module(request, module_id=module_id, course_id=course_id, msg=msg) if not last_attempt: attempt_number = 1 else: attempt_number = last_attempt.attempt_number + 1 if attempt_num is None and not quest_paper.quiz.is_exercise: context = { 'user': user, 'questionpaper': quest_paper, 'attempt_num': attempt_number, 'course': course, 'module': learning_module, } if is_moderator(user): context["status"] = "moderator" return my_render_to_response(request, 'yaksh/intro.html', context) else: ip = request.META['REMOTE_ADDR'] if not hasattr(user, 'profile'): msg = 'You do not have a profile and cannot take the quiz!' raise Http404(msg) new_paper = quest_paper.make_answerpaper(user, ip, attempt_number, course_id) if new_paper.status == 'inprogress': return show_question( request, new_paper.current_question(), new_paper, course_id=course_id, module_id=module_id, previous_question=None ) else: msg = 'You have already finished the quiz!' raise Http404(msg) @login_required @email_verified def show_question(request, question, paper, error_message=None, notification=None, course_id=None, module_id=None, previous_question=None): """Show a question if possible.""" quiz = paper.question_paper.quiz quiz_type = 'Exam' can_skip = False if previous_question: delay_time = paper.time_left_on_question(previous_question) else: delay_time = paper.time_left_on_question(question) if previous_question and quiz.is_exercise: if (delay_time <= 0 or previous_question in paper.questions_answered.all()): can_skip = True question = previous_question if not question: msg = 'Congratulations! You have successfully completed the quiz.' return complete( request, msg, paper.attempt_number, paper.question_paper.id, course_id=course_id, module_id=module_id ) if not quiz.active: reason = 'The quiz has been deactivated!' return complete( request, reason, paper.attempt_number, paper.question_paper.id, course_id=course_id, module_id=module_id ) if not quiz.is_exercise: if paper.time_left() <= 0: reason = 'Your time is up!' return complete( request, reason, paper.attempt_number, paper.question_paper.id, course_id, module_id=module_id ) else: quiz_type = 'Exercise' if question in paper.questions_answered.all(): notification = ( 'You have already attempted this question successfully' if question.type == "code" else 'You have already attempted this question' ) if question.type in ['mcc', 'mcq', 'arrange']: test_cases = question.get_ordered_test_cases(paper) else: test_cases = question.get_test_cases() files = FileUpload.objects.filter(question_id=question.id, hide=False) course = Course.objects.get(id=course_id) module = course.learning_module.get(id=module_id) all_modules = course.get_learning_modules() all_question_types = [types[0] for types in question_types] context = { 'question': question, 'paper': paper, 'quiz': quiz, 'error_message': error_message, 'test_cases': test_cases, 'files': files, 'notification': notification, 'last_attempt': question.snippet.encode('unicode-escape'), 'course': course, 'module': module, 'can_skip': can_skip, 'delay_time': delay_time, 'quiz_type': quiz_type, 'all_modules': all_modules, "question_types": all_question_types } answers = paper.get_previous_answers(question) if answers: last_attempt = answers[0].answer if last_attempt: context['last_attempt'] = last_attempt.encode('unicode-escape') return my_render_to_response(request, 'yaksh/question.html', context) @login_required @email_verified def skip(request, q_id, next_q=None, attempt_num=None, questionpaper_id=None, course_id=None, module_id=None): paper = get_object_or_404( AnswerPaper, user=request.user, attempt_number=attempt_num, question_paper=questionpaper_id, course_id=course_id ) question = get_object_or_404(Question, pk=q_id) if paper.question_paper.quiz.is_exercise: paper.start_time = timezone.now() paper.save() if request.method == 'POST' and question.type == 'code': if not paper.answers.filter(question=question, correct=True).exists(): user_code = request.POST.get('answer') new_answer = Answer( question=question, answer=user_code, correct=False, skipped=True, error=json.dumps([]) ) new_answer.save() paper.answers.add(new_answer) if next_q is not None: next_q = get_object_or_404(Question, pk=next_q) else: next_q = paper.next_question(q_id) return show_question(request, next_q, paper, course_id=course_id, module_id=module_id) @login_required @email_verified def check(request, q_id, attempt_num=None, questionpaper_id=None, course_id=None, module_id=None): """Checks the answers of the user for particular question""" user = request.user paper = get_object_or_404( AnswerPaper, user=request.user, attempt_number=attempt_num, question_paper=questionpaper_id, course_id=course_id ) current_question = get_object_or_404(Question, pk=q_id) if request.method == 'POST': # Add the answer submitted, regardless of it being correct or not. if current_question.type == 'mcq': user_answer = request.POST.get('answer') elif current_question.type == 'integer': try: user_answer = int(request.POST.get('answer')) except ValueError: msg = "Please enter an Integer Value" return show_question( request, current_question, paper, notification=msg, course_id=course_id, module_id=module_id, previous_question=current_question ) elif current_question.type == 'float': try: user_answer = float(request.POST.get('answer')) except ValueError: msg = "Please enter a Float Value" return show_question(request, current_question, paper, notification=msg, course_id=course_id, module_id=module_id, previous_question=current_question) elif current_question.type == 'string': user_answer = str(request.POST.get('answer')) elif current_question.type == 'mcc': user_answer = request.POST.getlist('answer') elif current_question.type == 'arrange': user_answer_ids = request.POST.get('answer').split(',') user_answer = [int(ids) for ids in user_answer_ids] elif current_question.type == 'upload': # if time-up at upload question then the form is submitted without # validation assignment_filename = request.FILES.getlist('assignment') if not assignment_filename: msg = "Please upload assignment file" return show_question( request, current_question, paper, notification=msg, course_id=course_id, module_id=module_id, previous_question=current_question ) for fname in assignment_filename: fname._name = fname._name.replace(" ", "_") assignment_files = AssignmentUpload.objects.filter( assignmentQuestion=current_question, course_id=course_id, assignmentFile__icontains=fname, user=user, question_paper=questionpaper_id) if assignment_files.exists(): assign_file = assignment_files.first() if os.path.exists(assign_file.assignmentFile.path): os.remove(assign_file.assignmentFile.path) assign_file.delete() AssignmentUpload.objects.create( user=user, assignmentQuestion=current_question, course_id=course_id, assignmentFile=fname, question_paper_id=questionpaper_id ) user_answer = 'ASSIGNMENT UPLOADED' if not current_question.grade_assignment_upload: new_answer = Answer( question=current_question, answer=user_answer, correct=False, error=json.dumps([]) ) new_answer.save() paper.answers.add(new_answer) next_q = paper.add_completed_question(current_question.id) return show_question(request, next_q, paper, course_id=course_id, module_id=module_id, previous_question=current_question) else: user_answer = request.POST.get('answer') if not user_answer: msg = "Please submit a valid answer." return show_question( request, current_question, paper, notification=msg, course_id=course_id, module_id=module_id, previous_question=current_question ) if current_question in paper.get_questions_answered()\ and current_question.type not in ['code', 'upload']: new_answer = paper.get_latest_answer(current_question.id) new_answer.answer = user_answer new_answer.correct = False else: new_answer = Answer( question=current_question, answer=user_answer, correct=False, error=json.dumps([]) ) new_answer.save() uid = new_answer.id 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. json_data = current_question.consolidate_answer_data( user_answer, user) if current_question.type == 'code' or \ current_question.type == 'upload' else None result = paper.validate_answer( user_answer, current_question, json_data, uid ) if current_question.type in ['code', 'upload']: if (paper.time_left() <= 0 and not paper.question_paper.quiz.is_exercise): url = '{0}:{1}'.format(SERVER_HOST_NAME, SERVER_POOL_PORT) result_details = get_result_from_code_server(url, uid, block=True) result = json.loads(result_details.get('result')) next_question, error_message, paper = _update_paper( request, uid, result) return show_question(request, next_question, paper, error_message, course_id=course_id, module_id=module_id, previous_question=current_question) else: return JsonResponse(result) else: next_question, error_message, paper = _update_paper( request, uid, result) return show_question(request, next_question, paper, error_message, course_id=course_id, module_id=module_id, previous_question=current_question) else: return show_question(request, current_question, paper, course_id=course_id, module_id=module_id, previous_question=current_question) @csrf_exempt def get_result(request, uid, course_id, module_id): result = {} url = '{0}:{1}'.format(SERVER_HOST_NAME, SERVER_POOL_PORT) result_state = get_result_from_code_server(url, uid) result['status'] = result_state.get('status') if result['status'] == 'done': result = json.loads(result_state.get('result')) template_path = os.path.join(*[os.path.dirname(__file__), 'templates', 'yaksh', 'error_template.html' ] ) next_question, error_message, paper = _update_paper(request, uid, result ) answer = Answer.objects.get(id=uid) current_question = answer.question if result.get('success'): return show_question(request, next_question, paper, error_message, course_id=course_id, module_id=module_id, previous_question=current_question) else: with open(template_path) as f: template_data = f.read() template = Template(template_data) context = Context({"error_message": result.get('error')}) render_error = template.render(context) result["error"] = render_error return JsonResponse(result) def _update_paper(request, uid, result): new_answer = Answer.objects.get(id=uid) current_question = new_answer.question paper = new_answer.answerpaper_set.first() if result.get('success'): new_answer.marks = (current_question.points * result['weight'] / current_question.get_maximum_test_case_weight()) \ if current_question.partial_grading and \ current_question.type == 'code' or \ current_question.type == 'upload' else current_question.points new_answer.correct = result.get('success') error_message = None new_answer.error = json.dumps(result.get('error')) next_question = paper.add_completed_question(current_question.id) else: new_answer.marks = (current_question.points * result['weight'] / current_question.get_maximum_test_case_weight()) \ if current_question.partial_grading and \ current_question.type == 'code' or \ current_question.type == 'upload' \ else 0 error_message = result.get('error') \ if current_question.type == 'code' or \ current_question.type == 'upload' \ else None new_answer.error = json.dumps(result.get('error')) next_question = current_question if current_question.type == 'code' \ or current_question.type == 'upload' \ else paper.add_completed_question(current_question.id) new_answer.save() paper.update_marks('inprogress') paper.set_end_time(timezone.now()) return next_question, error_message, paper @login_required @email_verified def quit(request, reason=None, attempt_num=None, questionpaper_id=None, course_id=None, module_id=None): """Show the quit page when the user logs out.""" paper = AnswerPaper.objects.get(user=request.user, attempt_number=attempt_num, question_paper=questionpaper_id, course_id=course_id) context = {'paper': paper, 'message': reason, 'course_id': course_id, 'module_id': module_id} return my_render_to_response(request, 'yaksh/quit.html', context) @login_required @email_verified def complete(request, reason=None, attempt_num=None, questionpaper_id=None, course_id=None, module_id=None): """Show a page to inform user that the quiz has been completed.""" user = request.user if questionpaper_id is None: message = reason or "An Unexpected Error occurred. Please contact your '\ 'instructor/administrator.'" context = {'message': message} return my_render_to_response(request, 'yaksh/complete.html', context) else: q_paper = QuestionPaper.objects.get(id=questionpaper_id) paper = AnswerPaper.objects.get( user=user, question_paper=q_paper, attempt_number=attempt_num, course_id=course_id ) course = Course.objects.get(id=course_id) learning_module = course.learning_module.get(id=module_id) learning_unit = learning_module.learning_unit.get(quiz=q_paper.quiz) paper.update_marks() paper.set_end_time(timezone.now()) message = reason or "Quiz has been submitted" context = {'message': message, 'paper': paper, 'module_id': learning_module.id, 'course_id': course_id, 'learning_unit': learning_unit} if is_moderator(user): context['user'] = "moderator" return my_render_to_response(request, 'yaksh/complete.html', context) @login_required @email_verified def add_course(request, course_id=None): user = request.user if course_id: course = Course.objects.get(id=course_id) if not course.is_creator(user) and not course.is_teacher(user): raise Http404("You are not allowed to view this course") else: course = None if not is_moderator(user): raise Http404('You are not allowed to view this page') if request.method == 'POST': form = CourseForm(request.POST, instance=course) if form.is_valid(): new_course = form.save(commit=False) if course_id is None: new_course.creator = user new_course.save() return my_redirect('/exam/manage/courses') else: return my_render_to_response( request, 'yaksh/add_course.html', {'form': form} ) else: form = CourseForm(instance=course) return my_render_to_response( request, 'yaksh/add_course.html', {'form': form} ) @login_required @email_verified def enroll_request(request, course_id): user = request.user course = get_object_or_404(Course, pk=course_id) if not course.is_active_enrollment() and course.hidden: msg = ( 'Unable to add enrollments for this course, please contact your ' 'instructor/administrator.' ) return complete(request, msg, attempt_num=None, questionpaper_id=None) course.request(user) if is_moderator(user): return my_redirect('/exam/manage/courses') else: return my_redirect('/exam/quizzes/') @login_required @email_verified def self_enroll(request, course_id): user = request.user course = get_object_or_404(Course, pk=course_id) if course.is_self_enroll(): was_rejected = False course.enroll(was_rejected, user) if is_moderator(user): return my_redirect('/exam/manage/') else: return my_redirect('/exam/quizzes/') @login_required @email_verified def courses(request): user = request.user if not is_moderator(user): raise Http404('You are not allowed to view this page') courses = Course.objects.filter( creator=user, is_trial=False).order_by('-active', '-id') allotted_courses = Course.objects.filter( teachers=user, is_trial=False).order_by('-active', '-id') context = {'courses': courses, "allotted_courses": allotted_courses, "type": "courses"} return my_render_to_response(request, 'yaksh/courses.html', context) @login_required @email_verified def course_detail(request, course_id): user = request.user if not is_moderator(user): raise Http404('You are not allowed to view this page') course = get_object_or_404(Course, pk=course_id) if not course.is_creator(user) and not course.is_teacher(user): raise Http404('This course does not belong to you') return my_render_to_response( request, 'yaksh/course_detail.html', {'course': course} ) @login_required @email_verified def enroll(request, course_id, user_id=None, was_rejected=False): user = request.user if not is_moderator(user): raise Http404('You are not allowed to view this page') course = get_object_or_404(Course, pk=course_id) if not course.is_active_enrollment(): msg = ( 'Enrollment for this course has been closed,' ' please contact your ' 'instructor/administrator.' ) return complete(request, msg, attempt_num=None, questionpaper_id=None) if not course.is_creator(user) and not course.is_teacher(user): raise Http404('This course does not belong to you') if request.method == 'POST': enroll_ids = request.POST.getlist('check') else: enroll_ids = [user_id] if not enroll_ids: return my_render_to_response( request, 'yaksh/course_detail.html', {'course': course} ) users = User.objects.filter(id__in=enroll_ids) course.enroll(was_rejected, *users) return course_detail(request, course_id) @login_required @email_verified def send_mail(request, course_id, user_id=None): user = request.user if not is_moderator(user): raise Http404('You are not allowed to view this page') course = get_object_or_404(Course, pk=course_id) if not course.is_creator(user) and not course.is_teacher(user): raise Http404('This course does not belong to you') message = None if request.method == 'POST': user_ids = request.POST.getlist('check') if request.POST.get('send_mail') == 'send_mail': users = User.objects.filter(id__in=user_ids) recipients = [student.email for student in users] email_body = request.POST.get('body') subject = request.POST.get('subject') attachments = request.FILES.getlist('email_attach') message = send_bulk_mail( subject, email_body, recipients, attachments ) context = { 'course': course, 'message': message, 'state': 'mail' } return my_render_to_response(request, 'yaksh/course_detail.html', context) @login_required @email_verified def reject(request, course_id, user_id=None, was_enrolled=False): user = request.user if not is_moderator(user): raise Http404('You are not allowed to view this page') course = get_object_or_404(Course, pk=course_id) if not course.is_creator(user) and not course.is_teacher(user): raise Http404('This course does not belong to you') if request.method == 'POST': reject_ids = request.POST.getlist('check') else: reject_ids = [user_id] if not reject_ids: message = "Please select atleast one User" return my_render_to_response( request, 'yaksh/course_detail.html', {'course': course, 'message': message}, ) users = User.objects.filter(id__in=reject_ids) course.reject(was_enrolled, *users) return course_detail(request, course_id) @login_required @email_verified def toggle_course_status(request, course_id): user = request.user if not is_moderator(user): raise Http404('You are not allowed to view this page') course = get_object_or_404(Course, pk=course_id) if not course.is_creator(user) and not course.is_teacher(user): raise Http404('This course does not belong to you') if course.active: course.deactivate() else: course.activate() course.save() return my_redirect("/exam/manage/courses") @login_required @email_verified def show_statistics(request, questionpaper_id, attempt_number=None, course_id=None): user = request.user if not is_moderator(user): raise Http404('You are not allowed to view this page') attempt_numbers = AnswerPaper.objects.get_attempt_numbers( questionpaper_id, course_id) quiz = get_object_or_404(QuestionPaper, pk=questionpaper_id).quiz if attempt_number is None: context = {'quiz': quiz, 'attempts': attempt_numbers, 'questionpaper_id': questionpaper_id, 'course_id': course_id} return my_render_to_response( request, 'yaksh/statistics_question.html', context ) total_attempt = AnswerPaper.objects.get_count(questionpaper_id, attempt_number, course_id) if not AnswerPaper.objects.has_attempt(questionpaper_id, attempt_number, course_id): return my_redirect('/exam/manage/') question_stats = AnswerPaper.objects.get_question_statistics( questionpaper_id, attempt_number, course_id ) context = {'question_stats': question_stats, 'quiz': quiz, 'questionpaper_id': questionpaper_id, 'attempts': attempt_numbers, 'total': total_attempt, 'course_id': course_id} return my_render_to_response( request, 'yaksh/statistics_question.html', context ) @login_required @email_verified def monitor(request, quiz_id=None, course_id=None): """Monitor the progress of the papers taken so far.""" user = request.user if not user.is_authenticated() or not is_moderator(user): raise Http404('You are not allowed to view this page!') if quiz_id is None: course_details = Course.objects.filter( Q(creator=user) | Q(teachers=user), is_trial=False ).distinct() context = { "papers": [], "course_details": course_details, "msg": "Monitor" } return my_render_to_response(request, 'yaksh/monitor.html', context) # quiz_id is not None. try: quiz = get_object_or_404(Quiz, id=quiz_id) course = get_object_or_404(Course, id=course_id) if not course.is_creator(user) and not course.is_teacher(user): raise Http404('This course does not belong to you') q_paper = QuestionPaper.objects.filter(quiz__is_trial=False, quiz_id=quiz_id).distinct() except (QuestionPaper.DoesNotExist, Course.DoesNotExist): papers = [] q_paper = None latest_attempts = [] attempt_numbers = [] else: if q_paper: attempt_numbers = AnswerPaper.objects.get_attempt_numbers( q_paper.last().id, course.id) else: attempt_numbers = [] latest_attempts = [] papers = AnswerPaper.objects.filter(question_paper=q_paper, course_id=course_id).order_by( 'user__profile__roll_number' ) users = papers.values_list('user').distinct() for auser in users: last_attempt = papers.filter(user__in=auser).aggregate( last_attempt_num=Max('attempt_number') ) latest_attempts.append( papers.get( user__in=auser, attempt_number=last_attempt['last_attempt_num'] ) ) csv_fields = CSV_FIELDS context = { "papers": papers, "quiz": quiz, "msg": "Quiz Results", "latest_attempts": latest_attempts, "csv_fields": csv_fields, "attempt_numbers": attempt_numbers, "course": course } return my_render_to_response(request, 'yaksh/monitor.html', context) @csrf_exempt def ajax_questions_filter(request): """Ajax call made when filtering displayed questions.""" user = request.user filter_dict = {"user_id": user.id, "active": True} question_type = request.POST.get('question_type') marks = request.POST.get('marks') language = request.POST.get('language') if question_type: filter_dict['type'] = str(question_type) if marks: filter_dict['points'] = marks if language: filter_dict['language'] = str(language) questions = Question.objects.filter(**filter_dict) return my_render_to_response( request, 'yaksh/ajax_question_filter.html', {'questions': questions} ) def _get_questions(user, question_type, marks): if question_type is None and marks is None: return None if question_type: questions = Question.objects.filter( type=question_type, user=user, active=True ) if marks: questions = questions.filter(points=marks) return questions def _remove_already_present(questionpaper_id, questions): if questionpaper_id is None: return questions questionpaper = QuestionPaper.objects.get(pk=questionpaper_id) questions = questions.exclude( id__in=questionpaper.fixed_questions.values_list('id', flat=True)) for random_set in questionpaper.random_questions.all(): questions = questions.exclude( id__in=random_set.questions.values_list('id', flat=True)) return questions def _get_questions_from_tags(question_tags, user): search_tags = [] for tags in question_tags: search_tags.extend(re.split('[; |, |\*|\n]', tags)) return Question.objects.filter(tags__name__in=search_tags, user=user).distinct() @login_required @email_verified def design_questionpaper(request, quiz_id, questionpaper_id=None, course_id=None): user = request.user que_tags = Question.objects.filter( active=True, user=user).values_list('tags', flat=True).distinct() all_tags = Tag.objects.filter(id__in=que_tags) if not is_moderator(user): raise Http404('You are not allowed to view this page!') if quiz_id: quiz = get_object_or_404(Quiz, pk=quiz_id) if quiz.creator != user and not course_id: raise Http404('This quiz does not belong to you') if course_id: course = get_object_or_404(Course, pk=course_id) if not course.is_creator(user) and not course.is_teacher(user): raise Http404('This Course does not belong to you') filter_form = QuestionFilterForm(user=user) questions = None marks = None state = None if questionpaper_id is None: question_paper = QuestionPaper.objects.get_or_create( quiz_id=quiz_id)[0] else: question_paper = get_object_or_404(QuestionPaper, id=questionpaper_id, quiz_id=quiz_id) qpaper_form = QuestionPaperForm(instance=question_paper) if request.method == 'POST': filter_form = QuestionFilterForm(request.POST, user=user) qpaper_form = QuestionPaperForm(request.POST, instance=question_paper) question_type = request.POST.get('question_type', None) marks = request.POST.get('marks', None) state = request.POST.get('is_active', None) tags = request.POST.get('question_tags', None) if 'add-fixed' in request.POST: question_ids = request.POST.get('checked_ques', None) if question_ids: if question_paper.fixed_question_order: ques_order = ( question_paper.fixed_question_order.split(",") + question_ids.split(",") ) questions_order = ",".join(ques_order) else: questions_order = question_ids questions = Question.objects.filter( id__in=question_ids.split(',') ) question_paper.fixed_question_order = questions_order question_paper.save() question_paper.fixed_questions.add(*questions) if 'remove-fixed' in request.POST: question_ids = request.POST.getlist('added-questions', None) if question_paper.fixed_question_order: que_order = question_paper.fixed_question_order.split(",") for qid in question_ids: que_order.remove(qid) if que_order: question_paper.fixed_question_order = ",".join(que_order) else: question_paper.fixed_question_order = "" question_paper.save() question_paper.fixed_questions.remove(*question_ids) if 'add-random' in request.POST: question_ids = request.POST.getlist('random_questions', None) num_of_questions = request.POST.get('num_of_questions', 1) if question_ids and marks: random_set = QuestionSet(marks=marks, num_questions=num_of_questions) random_set.save() random_ques = Question.objects.filter(id__in=question_ids) random_set.questions.add(*random_ques) question_paper.random_questions.add(random_set) if 'remove-random' in request.POST: random_set_ids = request.POST.getlist('random_sets', None) question_paper.random_questions.remove(*random_set_ids) if 'save' in request.POST or 'back' in request.POST: qpaper_form.save() return my_redirect('/exam/manage/courses/all_quizzes/') if marks: questions = _get_questions(user, question_type, marks) elif tags: que_tags = request.POST.getlist('question_tags', None) questions = _get_questions_from_tags(que_tags, user) if questions: questions = _remove_already_present(questionpaper_id, questions) question_paper.update_total_marks() question_paper.save() random_sets = question_paper.random_questions.all() fixed_questions = question_paper.get_ordered_questions() context = { 'qpaper_form': qpaper_form, 'filter_form': filter_form, 'qpaper': question_paper, 'questions': questions, 'fixed_questions': fixed_questions, 'state': state, 'random_sets': random_sets, 'course_id': course_id, 'all_tags': all_tags } return my_render_to_response( request, 'yaksh/design_questionpaper.html', context ) @login_required @email_verified def show_all_questions(request): """Show a list of all the questions currently in the database.""" user = request.user context = {} if not is_moderator(user): raise Http404("You are not allowed to view this page !") questions = Question.objects.filter(user_id=user.id, active=True) form = QuestionFilterForm(user=user) user_tags = questions.values_list('tags', flat=True).distinct() all_tags = Tag.objects.filter(id__in=user_tags) upload_form = UploadFileForm() context['questions'] = questions context['all_tags'] = all_tags context['papers'] = [] context['question'] = None context['form'] = form context['upload_form'] = upload_form if request.method == 'POST': if request.POST.get('delete') == 'delete': data = request.POST.getlist('question') if data is not None: questions = Question.objects.filter( id__in=data, user_id=user.id, active=True) for question in questions: question.active = False question.save() if request.POST.get('upload') == 'upload': form = UploadFileForm(request.POST, request.FILES) if form.is_valid(): questions_file = request.FILES['file'] file_extension = questions_file.name.split('.')[-1] ques = Question() if file_extension == "zip": files, extract_path = extract_files(questions_file) context['message'] = ques.read_yaml(extract_path, user, files) elif file_extension in ["yaml", "yml"]: questions = questions_file.read() context['message'] = ques.load_questions(questions, user) else: message = "Please Upload a ZIP file" context['message'] = message if request.POST.get('download') == 'download': question_ids = request.POST.getlist('question') if question_ids: question = Question() zip_file = question.dump_questions(question_ids, user) response = HttpResponse(content_type='application/zip') response['Content-Disposition'] = dedent( '''attachment; filename={0}_questions.zip'''.format(user) ) zip_file.seek(0) response.write(zip_file.read()) return response else: context['msg'] = ("Please select atleast" + "one question to download") if request.POST.get('test') == 'test': question_ids = request.POST.getlist("question") if question_ids: trial_paper, trial_course, trial_module = test_mode( user, False, question_ids, None) trial_paper.update_total_marks() trial_paper.save() return my_redirect("/exam/start/1/{0}/{1}/{2}".format( trial_module.id, trial_paper.id, trial_course.id)) else: context["msg"] = "Please select atleast one question to test" if request.POST.get('question_tags'): question_tags = request.POST.getlist("question_tags") search_result = _get_questions_from_tags(question_tags, user) context['questions'] = search_result return my_render_to_response(request, 'yaksh/showquestions.html', context) @login_required @email_verified def user_data(request, user_id, questionpaper_id=None, course_id=None): """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!') user = User.objects.get(id=user_id) data = AnswerPaper.objects.get_user_data(user, questionpaper_id, course_id) context = {'data': data, 'course_id': course_id} return my_render_to_response(request, 'yaksh/user_data.html', context) def _expand_questions(questions, field_list): i = field_list.index('questions') field_list.remove('questions') for question in questions: field_list.insert( i, '{0}-{1}'.format(question.summary, question.points)) return field_list @login_required @email_verified def download_quiz_csv(request, course_id, quiz_id): current_user = request.user if not is_moderator(current_user): raise Http404('You are not allowed to view this page!') course = get_object_or_404(Course, id=course_id) quiz = get_object_or_404(Quiz, id=quiz_id) if not course.is_creator(current_user) and \ not course.is_teacher(current_user): raise Http404('The quiz does not belong to your course') users = course.get_enrolled().order_by('first_name') if not users: return monitor(request, quiz_id) csv_fields = [] attempt_number = None question_paper = quiz.questionpaper_set.last() last_attempt_number = AnswerPaper.objects.get_attempt_numbers( question_paper.id, course.id).last() if request.method == 'POST': csv_fields = request.POST.getlist('csv_fields') attempt_number = request.POST.get('attempt_number', last_attempt_number) if not csv_fields: csv_fields = CSV_FIELDS if not attempt_number: attempt_number = last_attempt_number questions = question_paper.get_question_bank() answerpapers = AnswerPaper.objects.filter( question_paper=question_paper, attempt_number=attempt_number, course_id=course_id) if not answerpapers: return monitor(request, quiz_id, course_id) response = HttpResponse(content_type='text/csv') response['Content-Disposition'] = \ 'attachment; filename="{0}-{1}-attempt{2}.csv"'.format( course.name.replace('.', ''), quiz.description.replace('.', ''), attempt_number) writer = csv.writer(response) if 'questions' in csv_fields: csv_fields = _expand_questions(questions, csv_fields) writer.writerow(csv_fields) csv_fields_values = { 'name': 'user.get_full_name().title()', 'roll_number': 'user.profile.roll_number', 'institute': 'user.profile.institute', 'department': 'user.profile.department', 'username': 'user.username', 'marks_obtained': 'answerpaper.marks_obtained', 'out_of': 'question_paper.total_marks', 'percentage': 'answerpaper.percent', 'status': 'answerpaper.status'} questions_scores = {} for question in questions: questions_scores['{0}-{1}'.format(question.summary, question.points)] \ = 'answerpaper.get_per_question_score({0})'.format(question.id) csv_fields_values.update(questions_scores) users = users.exclude(id=course.creator.id).exclude( id__in=course.teachers.all()) for user in users: row = [] answerpaper = None papers = answerpapers.filter(user=user) if papers: answerpaper = papers.first() for field in csv_fields: try: row.append(eval(csv_fields_values[field])) except AttributeError: row.append('-') writer.writerow(row) return response @login_required @email_verified def grade_user(request, quiz_id=None, user_id=None, attempt_number=None, course_id=None): """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 if not current_user.is_authenticated() or not is_moderator(current_user): raise Http404('You are not allowed to view this page!') course_details = Course.objects.filter(Q(creator=current_user) | Q(teachers=current_user), is_trial=False).distinct() context = {"course_details": course_details} if quiz_id is not None: questionpaper_id = QuestionPaper.objects.filter( quiz_id=quiz_id ).values("id") user_details = AnswerPaper.objects.get_users_for_questionpaper( questionpaper_id, course_id ) quiz = get_object_or_404(Quiz, id=quiz_id) course = get_object_or_404(Course, id=course_id) if not course.is_creator(current_user) and not \ course.is_teacher(current_user): raise Http404('This course does not belong to you') has_quiz_assignments = AssignmentUpload.objects.filter( question_paper_id=questionpaper_id ).exists() context = { "users": user_details, "quiz_id": quiz_id, "quiz": quiz, "has_quiz_assignments": has_quiz_assignments, "course_id": course_id } if user_id is not None: attempts = AnswerPaper.objects.get_user_all_attempts( questionpaper_id, user_id, course_id ) try: if attempt_number is None: attempt_number = attempts[0].attempt_number except IndexError: raise Http404('No attempts for paper') has_user_assignments = AssignmentUpload.objects.filter( question_paper_id=questionpaper_id, user_id=user_id ).exists() user = User.objects.get(id=user_id) data = AnswerPaper.objects.get_user_data( user, questionpaper_id, course_id, attempt_number ) context = { "data": data, "quiz_id": quiz_id, "users": user_details, "attempts": attempts, "user_id": user_id, "has_user_assignments": has_user_assignments, "has_quiz_assignments": has_quiz_assignments, "course_id": course_id } if request.method == "POST": papers = data['papers'] for paper in papers: for question, answers in six.iteritems( paper.get_question_answers()): marks = float(request.POST.get('q%d_marks' % question.id, 0)) answer = answers[-1]['answer'] answer.set_marks(marks) answer.save() paper.update_marks() paper.comments = request.POST.get( 'comments_%d' % paper.question_paper.id, 'No comments') paper.save() course_status = CourseStatus.objects.filter(course=course, user=user) if course_status.exists(): course_status.first().set_grade() return my_render_to_response(request, 'yaksh/grade_user.html', context) @login_required @has_profile @email_verified def view_profile(request): """ view moderators and users profile """ user = request.user if is_moderator(user): template = 'manage.html' else: template = 'user.html' context = {'template': template, 'user': user} return my_render_to_response(request, 'yaksh/view_profile.html', context) @login_required @email_verified def edit_profile(request): """ edit profile details facility for moderator and students """ user = request.user if is_moderator(user): template = 'manage.html' else: template = 'user.html' context = {'template': template} try: profile = Profile.objects.get(user_id=user.id) except Profile.DoesNotExist: profile = None if request.method == 'POST': form = ProfileForm(request.POST, user=user, instance=profile) if form.is_valid(): form_data = form.save(commit=False) form_data.user = user form_data.user.first_name = request.POST['first_name'] form_data.user.last_name = request.POST['last_name'] form_data.user.save() form_data.save() return my_render_to_response(request, 'yaksh/profile_updated.html') else: context['form'] = form return my_render_to_response( request, 'yaksh/editprofile.html', context ) else: form = ProfileForm(user=user, instance=profile) context['form'] = form return my_render_to_response( request, 'yaksh/editprofile.html', context ) @login_required @email_verified def search_teacher(request, course_id): """ search teachers for the course """ user = request.user if not is_moderator(user): raise Http404('You are not allowed to view this page!') context = {'success': False} course = get_object_or_404(Course, pk=course_id) context['course'] = course if user != course.creator and user not in course.teachers.all(): raise Http404('You are not allowed to view this page!') if request.method == 'POST': u_name = request.POST.get('uname') if not len(u_name) == 0: teachers = User.objects.filter( Q(username__icontains=u_name) | Q(first_name__icontains=u_name) | Q(last_name__icontains=u_name) | Q(email__icontains=u_name) ).exclude( Q(id=user.id) | Q(is_superuser=1) | Q(id=course.creator.id) ) context['success'] = True context['teachers'] = teachers return my_render_to_response(request, 'yaksh/addteacher.html', context) @login_required @email_verified def toggle_moderator_role(request): """ Allow moderator to switch to student and back """ user = request.user try: group = Group.objects.get(name='moderator') except Group.DoesNotExist: raise Http404('The Moderator group does not exist') if not user.profile.is_moderator: raise Http404('You are not allowed to view this page!') if user not in group.user_set.all(): group.user_set.add(user) else: group.user_set.remove(user) return my_redirect('/exam/') @login_required @email_verified def add_teacher(request, course_id): """ add teachers to the course """ user = request.user if not is_moderator(user): raise Http404('You are not allowed to view this page!') context = {} course = get_object_or_404(Course, pk=course_id) if course.is_creator(user) or course.is_teacher(user): context['course'] = course else: raise Http404('You are not allowed to view this page!') if request.method == 'POST': teacher_ids = request.POST.getlist('check') teachers = User.objects.filter(id__in=teacher_ids) add_as_moderator(teachers) course.add_teachers(*teachers) context['status'] = True context['teachers_added'] = teachers return my_render_to_response(request, 'yaksh/addteacher.html', context) @login_required @email_verified def remove_teachers(request, course_id): """ remove user from a course """ user = request.user course = get_object_or_404(Course, pk=course_id) if not is_moderator(user) and (not course.is_creator(user) and course.is_teacher(user)): raise Http404('You are not allowed to view this page!') if request.method == "POST": teacher_ids = request.POST.getlist('remove') teachers = User.objects.filter(id__in=teacher_ids) course.remove_teachers(*teachers) return my_redirect('/exam/manage/courses') def test_mode(user, godmode=False, questions_list=None, quiz_id=None, course_id=None): """creates a trial question paper for the moderators""" if questions_list is not None: trial_course = Course.objects.create_trial_course(user) trial_quiz = Quiz.objects.create_trial_quiz(user) trial_questionpaper = QuestionPaper.objects. \ create_trial_paper_to_test_questions( trial_quiz, questions_list ) trial_unit, created = LearningUnit.objects.get_or_create( order=1, type="quiz", quiz=trial_quiz, check_prerequisite=False) module, created = LearningModule.objects.get_or_create( order=1, creator=user, check_prerequisite=False, name="Trial for {0}".format(trial_course.name)) module.learning_unit.add(trial_unit) trial_course.learning_module.add(module.id) else: trial_quiz, trial_course, module = Quiz.objects.create_trial_from_quiz( quiz_id, user, godmode, course_id ) trial_questionpaper = QuestionPaper.objects. \ create_trial_paper_to_test_quiz( trial_quiz, quiz_id ) return trial_questionpaper, trial_course, module @login_required @email_verified def test_quiz(request, mode, quiz_id, course_id=None): """creates a trial quiz for the moderators""" godmode = True if mode == "godmode" else False current_user = request.user quiz = Quiz.objects.get(id=quiz_id) if (quiz.is_expired() or not quiz.active) and not godmode: return my_redirect('/exam/manage') trial_questionpaper, trial_course, trial_module = test_mode( current_user, godmode, None, quiz_id, course_id) return my_redirect("/exam/start/{0}/{1}/{2}".format( trial_questionpaper.id, trial_module.id, trial_course.id)) @login_required @email_verified def view_answerpaper(request, questionpaper_id, course_id): user = request.user quiz = get_object_or_404(QuestionPaper, pk=questionpaper_id).quiz course = get_object_or_404(Course, pk=course_id) if quiz.view_answerpaper and user in course.students.all(): data = AnswerPaper.objects.get_user_data(user, questionpaper_id, course_id) has_user_assignment = AssignmentUpload.objects.filter( user=user, course_id=course.id, question_paper_id=questionpaper_id ).exists() context = {'data': data, 'quiz': quiz, 'course_id': course.id, "has_user_assignment": has_user_assignment} return my_render_to_response( request, 'yaksh/view_answerpaper.html', context ) else: return my_redirect('/exam/quizzes/') @login_required @email_verified def create_demo_course(request): """ creates a demo course for user """ user = request.user if not is_moderator(user): raise Http404("You are not allowed to view this page") demo_course = Course() success = demo_course.create_demo(user) if success: msg = "Created Demo course successfully" else: msg = "Demo course already created" return prof_manage(request, msg) @login_required @email_verified def grader(request, extra_context=None): user = request.user if not is_moderator(user): raise Http404('You are not allowed to view this page!') courses = Course.objects.filter(is_trial=False) user_courses = list(courses.filter(creator=user)) + \ list(courses.filter(teachers=user)) context = {'courses': user_courses} if extra_context: context.update(extra_context) return my_render_to_response(request, 'yaksh/regrade.html', context) @login_required @email_verified def regrade(request, course_id, question_id=None, answerpaper_id=None, questionpaper_id=None): user = request.user course = get_object_or_404(Course, pk=course_id) if not is_moderator(user) or (course.is_creator(user) and course.is_teacher(user)): raise Http404('You are not allowed to view this page!') details = [] if answerpaper_id is not None and question_id is None: answerpaper = get_object_or_404(AnswerPaper, pk=answerpaper_id) for question in answerpaper.questions.all(): details.append(answerpaper.regrade(question.id)) course_status = CourseStatus.objects.filter( user=answerpaper.user, course=answerpaper.course) if course_status.exists(): course_status.first().set_grade() if questionpaper_id is not None and question_id is not None: answerpapers = AnswerPaper.objects.filter( questions=question_id, question_paper_id=questionpaper_id, course_id=course_id) for answerpaper in answerpapers: details.append(answerpaper.regrade(question_id)) course_status = CourseStatus.objects.filter( user=answerpaper.user, course=answerpaper.course) if course_status.exists(): course_status.first().set_grade() if answerpaper_id is not None and question_id is not None: answerpaper = get_object_or_404(AnswerPaper, pk=answerpaper_id) details.append(answerpaper.regrade(question_id)) course_status = CourseStatus.objects.filter(user=answerpaper.user, course=answerpaper.course) if course_status.exists(): course_status.first().set_grade() return grader(request, extra_context={'details': details}) @login_required @email_verified def download_course_csv(request, course_id): user = request.user if not is_moderator(user): raise Http404('You are not allowed to view this page!') course = Course.objects.prefetch_related("learning_module").get( id=course_id) if not course.is_creator(user) and not course.is_teacher(user): raise Http404('The question paper does not belong to your course') students = course.get_only_students().annotate( roll_number=F('profile__roll_number'), institute=F('profile__institute') ).values( "id", "first_name", "last_name", "email", "institute", "roll_number" ) quizzes = course.get_quizzes() for student in students: total_course_marks = 0.0 user_course_marks = 0.0 for quiz in quizzes: quiz_best_marks = AnswerPaper.objects. \ get_user_best_of_attempts_marks(quiz, student["id"], course_id) user_course_marks += quiz_best_marks total_course_marks += quiz.questionpaper_set.values_list( "total_marks", flat=True)[0] student["{}".format(quiz.description)] = quiz_best_marks student["total_scored"] = user_course_marks student["out_of"] = total_course_marks response = HttpResponse(content_type='text/csv') response['Content-Disposition'] = 'attachment; filename="{0}.csv"'.format( (course.name).lower().replace('.', '')) header = ['first_name', 'last_name', "roll_number", "email", "institute"]\ + [quiz.description for quiz in quizzes] + ['total_scored', 'out_of'] writer = csv.DictWriter(response, fieldnames=header, extrasaction='ignore') writer.writeheader() for student in students: writer.writerow(student) return response def activate_user(request, key): profile = get_object_or_404(Profile, activation_key=key) context = {} context['success'] = False if profile.is_email_verified: context['activation_msg'] = "Your account is already verified" return my_render_to_response( request, 'yaksh/activation_status.html', context ) if timezone.now() > profile.key_expiry_time: context['msg'] = dedent(""" Your activation time expired. Please try again. """) else: context['success'] = True profile.is_email_verified = True profile.save() context['msg'] = "Your account is activated" return my_render_to_response( request, 'yaksh/activation_status.html', context ) def new_activation(request, email=None): context = {} if request.method == "POST": email = request.POST.get('email') try: user = User.objects.get(email=email) except MultipleObjectsReturned: context['email_err_msg'] = "Multiple entries found for this email"\ "Please change your email" return my_render_to_response( request, 'yaksh/activation_status.html', context ) except ObjectDoesNotExist: context['success'] = False context['msg'] = "Your account is not verified. \ Please verify your account" return my_render_to_response( request, 'yaksh/activation_status.html', context ) if not user.profile.is_email_verified: user.profile.activation_key = generate_activation_key(user.username) user.profile.key_expiry_time = timezone.now() + \ timezone.timedelta(minutes=20) user.profile.save() new_user_data = User.objects.get(email=email) success, msg = send_user_mail(new_user_data.email, new_user_data.profile.activation_key ) if success: context['activation_msg'] = msg else: context['msg'] = msg else: context['activation_msg'] = "Your account is already verified" return my_render_to_response( request, 'yaksh/activation_status.html', context ) def update_email(request): context = {} if request.method == "POST": email = request.POST.get('email') username = request.POST.get('username') user = get_object_or_404(User, username=username) user.email = email user.save() return new_activation(request, email) else: context['email_err_msg'] = "Please Update your email" return my_render_to_response( request, 'yaksh/activation_status.html', context ) @login_required @email_verified def download_assignment_file(request, quiz_id, course_id, question_id=None, user_id=None): user = request.user course = get_object_or_404(Course, pk=course_id) if (not course.is_creator(user) and not course.is_teacher(user) and not course.is_student(user)): raise Http404("You are not allowed to download files for {0}".format( course.name) ) qp = get_object_or_404(QuestionPaper, quiz_id=quiz_id) assignment_files, file_name = AssignmentUpload.objects.get_assignments( qp, question_id, user_id, course_id ) zipfile_name = string_io() zip_file = zipfile.ZipFile(zipfile_name, "w") for f_name in assignment_files: folder = f_name.user.get_full_name().replace(" ", "_") sub_folder = f_name.assignmentQuestion.summary.replace(" ", "_") folder_name = os.sep.join((folder, sub_folder, os.path.basename( f_name.assignmentFile.name)) ) zip_file.write( f_name.assignmentFile.path, folder_name ) zip_file.close() zipfile_name.seek(0) response = HttpResponse(content_type='application/zip') response['Content-Disposition'] = 'attachment; filename={0}.zip'.format( file_name.replace(" ", "_") ) response.write(zipfile_name.read()) return response @login_required @email_verified def upload_users(request, course_id): user = request.user course = get_object_or_404(Course, pk=course_id) context = {'course': course} if not (course.is_teacher(user) or course.is_creator(user)): msg = 'You do not have permissions to this course.' return complete(request, reason=msg) if request.method == 'POST': if 'csv_file' not in request.FILES: context['message'] = "Please upload a CSV file." return my_render_to_response( request, 'yaksh/course_detail.html', context ) csv_file = request.FILES['csv_file'] is_csv_file, dialect = is_csv(csv_file) if not is_csv_file: context['message'] = "The file uploaded is not a CSV file." return my_render_to_response( request, 'yaksh/course_detail.html', context ) required_fields = ['firstname', 'lastname', 'email'] try: reader = csv.DictReader( csv_file.read().decode('utf-8').splitlines(), dialect=dialect) except TypeError: context['message'] = "Bad CSV file" return my_render_to_response( request, 'yaksh/course_detail.html', context ) stripped_fieldnames = [ field.strip().lower() for field in reader.fieldnames] for field in required_fields: if field not in stripped_fieldnames: context['message'] = "The CSV file does not contain the"\ " required headers" return my_render_to_response( request, 'yaksh/course_detail.html', context ) reader.fieldnames = stripped_fieldnames context['upload_details'] = _read_user_csv(reader, course) return my_render_to_response(request, 'yaksh/course_detail.html', context) def _read_user_csv(reader, course): fields = reader.fieldnames upload_details = ["Upload Summary:"] counter = 0 for row in reader: counter += 1 (username, email, first_name, last_name, password, roll_no, institute, department, remove) = _get_csv_values(row, fields) if not email or not first_name or not last_name: upload_details.append("{0} -- Missing Values".format(counter)) continue users = User.objects.filter(username=username) if users.exists(): user = users[0] if remove.strip().lower() == 'true': if _remove_from_course(user, course): upload_details.append("{0} -- {1} -- User rejected".format( counter, user.username)) continue else: if _add_to_course(user, course): upload_details.append("{0} -- {1} -- User rejected".format( counter, user.username)) if user not in course.get_enrolled(): upload_details.append("{0} -- {1} not added to course".format( counter, user)) continue user_defaults = {'email': email, 'first_name': first_name, 'last_name': last_name} user, created = _create_or_update_user(username, password, user_defaults) profile_defaults = {'institute': institute, 'roll_number': roll_no, 'department': department, 'is_email_verified': True} _create_or_update_profile(user, profile_defaults) if created: state = "Added" course.students.add(user) else: state = "Updated" upload_details.append("{0} -- {1} -- User {2} Successfully".format( counter, user.username, state)) if counter == 0: upload_details.append("No rows in the CSV file") return upload_details def _get_csv_values(row, fields): roll_no, institute, department = "", "", "" remove = "false" email, first_name, last_name = map(str.strip, [row['email'], row['firstname'], row['lastname']]) password = email username = email if 'password' in fields and row['password']: password = row['password'].strip() if 'roll_no' in fields: roll_no = row['roll_no'].strip() if 'institute' in fields: institute = row['institute'].strip() if 'department' in fields: department = row['department'].strip() if 'remove' in fields: remove = row['remove'].strip() if 'username' in fields and row['username']: username = row['username'].strip() if 'remove' in fields: remove = row['remove'] return (username, email, first_name, last_name, password, roll_no, institute, department, remove) def _remove_from_course(user, course): if user in course.get_enrolled(): course.reject(True, user) return True def _add_to_course(user, course): if user in course.get_rejected(): course.enroll(True, user) return True def _create_or_update_user(username, password, defaults): user, created = User.objects.update_or_create(username=username, defaults=defaults) user.set_password(password) user.save() return user, created def _create_or_update_profile(user, defaults): Profile.objects.update_or_create(user=user, defaults=defaults) @login_required @email_verified def download_sample_csv(request): user = request.user if not is_moderator(user): raise Http404('You are not allowed to view this page!') csv_file_path = os.path.join(FIXTURES_DIR_PATH, "sample_user_upload.csv") with open(csv_file_path, 'rb') as csv_file: response = HttpResponse(csv_file.read(), content_type='text/csv') response['Content-Disposition'] = ( 'attachment; filename="sample_user_upload"' ) return response @login_required @email_verified def duplicate_course(request, course_id): user = request.user course = Course.objects.get(id=course_id) if not is_moderator(user): raise Http404('You are not allowed to view this page!') if course.is_teacher(user) or course.is_creator(user): # Create new entries of modules, lessons/quizzes # from current course to copied course course.create_duplicate_course(user) else: msg = dedent( '''\ You do not have permissions to clone {0} course, please contact your instructor/administrator.'''.format(course.name) ) return complete(request, msg, attempt_num=None, questionpaper_id=None) return my_redirect('/exam/manage/courses/') @login_required @email_verified def download_yaml_template(request): user = request.user if not is_moderator(user): raise Http404('You are not allowed to view this page!') template_path = os.path.join(os.path.dirname(__file__), "fixtures", "demo_questions.zip" ) yaml_file = zipfile.ZipFile(template_path, 'r') template_yaml = yaml_file.open('questions_dump.yaml', 'r') response = HttpResponse(template_yaml, content_type='text/yaml') response['Content-Disposition'] = ( 'attachment; filename="questions_dump.yaml"' ) return response @login_required @email_verified def edit_lesson(request, lesson_id=None, course_id=None): user = request.user if not is_moderator(user): raise Http404('You are not allowed to view this page!') if lesson_id: lesson = Lesson.objects.get(id=lesson_id) if not lesson.creator == user and not course_id: raise Http404('This Lesson does not belong to you') else: lesson = None if course_id: course = get_object_or_404(Course, id=course_id) if not course.is_creator(user) and not course.is_teacher(user): raise Http404('This Lesson does not belong to you') redirect_url = "/exam/manage/courses/" else: redirect_url = "/exam/manage/courses/all_lessons/" context = {} if request.method == "POST": if "Save" in request.POST: lesson_form = LessonForm(request.POST, request.FILES, instance=lesson) lesson_file_form = LessonFileForm(request.POST, request.FILES) lessonfiles = request.FILES.getlist('Lesson_files') clear = request.POST.get("video_file-clear") video_file = request.FILES.get("video_file") if (clear or video_file) and lesson: # Remove previous video file if new file is uploaded or # if clear is selected lesson.remove_file() if lesson_form.is_valid(): if lesson is None: lesson_form.instance.creator = user lesson = lesson_form.save() lesson.html_data = get_html_text(lesson.description) lesson.save() if lessonfiles: for les_file in lessonfiles: LessonFile.objects.get_or_create( lesson=lesson, file=les_file ) return my_redirect(redirect_url) else: context['lesson_form'] = lesson_form context['error'] = lesson_form["video_file"].errors context['lesson_file_form'] = lesson_file_form if 'Delete' in request.POST: remove_files_id = request.POST.getlist('delete_files') if remove_files_id: files = LessonFile.objects.filter(id__in=remove_files_id) for file in files: file.remove() return my_redirect(redirect_url) lesson_files = LessonFile.objects.filter(lesson=lesson) lesson_files_form = LessonFileForm() lesson_form = LessonForm(instance=lesson) context['lesson_form'] = lesson_form context['lesson_file_form'] = lesson_files_form context['lesson_files'] = lesson_files context['course_id'] = course_id return my_render_to_response(request, 'yaksh/add_lesson.html', context) @login_required @email_verified def show_lesson(request, lesson_id, module_id, course_id): user = request.user course = Course.objects.get(id=course_id) if user not in course.students.all(): raise Http404('This course does not belong to you') if not course.active or not course.is_active_enrollment(): msg = "{0} is either expired or not active".format(course.name) return quizlist_user(request, msg=msg) learn_module = course.learning_module.get(id=module_id) learn_unit = learn_module.learning_unit.get(lesson_id=lesson_id) learning_units = learn_module.get_learning_units() if not learn_module.active: return view_module(request, module_id, course_id) if not learn_unit.lesson.active: msg = "{0} is not active".format(learn_unit.lesson.name) return view_module(request, module_id, course_id, msg) if learn_module.has_prerequisite(): if not learn_module.is_prerequisite_passed(user, course): msg = "You have not completed the module previous to {0}".format( learn_module.name) return view_module(request, module_id, course_id, msg) # update course status with current unit _update_unit_status(course_id, user, learn_unit) all_modules = course.get_learning_modules() if learn_unit.has_prerequisite(): if not learn_unit.is_prerequisite_passed(user, learn_module, course): msg = "You have not completed previous Lesson/Quiz/Exercise" return view_module(request, learn_module.id, course_id, msg=msg) context = {'lesson': learn_unit.lesson, 'user': user, 'course': course, 'state': "lesson", "all_modules": all_modules, 'learning_units': learning_units, "current_unit": learn_unit, 'learning_module': learn_module} return my_render_to_response(request, 'yaksh/show_video.html', context) @login_required @email_verified def design_module(request, module_id, course_id=None): user = request.user if not is_moderator(user): raise Http404('You are not allowed to view this page!') context = {} if course_id: course = Course.objects.get(id=course_id) if not course.is_creator(user) and not course.is_teacher(user): raise Http404('This course does not belong to you') learning_module = LearningModule.objects.get(id=module_id) if request.method == "POST": if "Add" in request.POST: add_values = request.POST.get("chosen_list").split(',') to_add_list = [] if add_values: ordered_units = learning_module.get_learning_units() if ordered_units.exists(): start_val = ordered_units.last().order + 1 else: start_val = 1 for order, value in enumerate(add_values, start_val): learning_id, type = value.split(":") if type == "quiz": learning_unit = LearningUnit.objects.create( order=order, quiz_id=learning_id, type=type) else: learning_unit = LearningUnit.objects.create( order=order, lesson_id=learning_id, type=type) to_add_list.append(learning_unit) learning_module.learning_unit.add(*to_add_list) if "Change" in request.POST: order_list = request.POST.get("ordered_list").split(",") for order in order_list: learning_unit, learning_order = order.split(":") if learning_order: learning_unit = learning_module.learning_unit.get( id=learning_unit) learning_unit.order = learning_order learning_unit.save() if "Remove" in request.POST: remove_values = request.POST.getlist("delete_list") if remove_values: learning_module.learning_unit.remove(*remove_values) LearningUnit.objects.filter(id__in=remove_values).delete() if "Change_prerequisite" in request.POST: unit_list = request.POST.getlist("check_prereq") for unit in unit_list: learning_unit = learning_module.learning_unit.get(id=unit) learning_unit.toggle_check_prerequisite() learning_unit.save() added_quiz_lesson = learning_module.get_added_quiz_lesson() quizzes = [("quiz", quiz) for quiz in Quiz.objects.filter( creator=user, is_trial=False)] lessons = [("lesson", lesson) for lesson in Lesson.objects.filter(creator=user)] quiz_les_list = set(quizzes + lessons) - set(added_quiz_lesson) context['quiz_les_list'] = quiz_les_list context['learning_units'] = learning_module.get_learning_units() context['status'] = 'design' context['module_id'] = module_id context['course_id'] = course_id return my_render_to_response(request, 'yaksh/add_module.html', context) @login_required @email_verified def add_module(request, module_id=None, course_id=None): user = request.user if not is_moderator(user): raise Http404('You are not allowed to view this page!') redirect_url = "/exam/manage/courses/all_learning_module/" if course_id: course = Course.objects.get(id=course_id) if not course.is_creator(user) and not course.is_teacher(user): raise Http404('This course does not belong to you') redirect_url = "/exam/manage/courses/" if module_id: module = LearningModule.objects.get(id=module_id) if not module.creator == user and not course_id: raise Http404('This Learning Module does not belong to you') else: module = None context = {} if request.method == "POST": if "Save" in request.POST: module_form = LearningModuleForm(request.POST, instance=module) if module_form.is_valid(): if module is None: module_form.instance.creator = user module = module_form.save() module.html_data = get_html_text(module.description) module.save() return my_redirect(redirect_url) else: context['module_form'] = module_form module_form = LearningModuleForm(instance=module) context['module_form'] = module_form context['course_id'] = course_id context['status'] = "add" return my_render_to_response(request, "yaksh/add_module.html", context) @login_required @email_verified def show_all_quizzes(request): user = request.user if not is_moderator(user): raise Http404('You are not allowed to view this page!') quizzes = Quiz.objects.filter(creator=user, is_trial=False) context = {"quizzes": quizzes, "type": "quiz"} return my_render_to_response(request, 'yaksh/courses.html', context) @login_required @email_verified def show_all_lessons(request): user = request.user if not is_moderator(user): raise Http404('You are not allowed to view this page!') lessons = Lesson.objects.filter(creator=user) context = {"lessons": lessons, "type": "lesson"} return my_render_to_response(request, 'yaksh/courses.html', context) @login_required @email_verified def show_all_modules(request): user = request.user if not is_moderator(user): raise Http404('You are not allowed to view this page!') learning_modules = LearningModule.objects.filter( creator=user, is_trial=False) context = {"learning_modules": learning_modules, "type": "learning_module"} return my_render_to_response(request, 'yaksh/courses.html', context) @login_required @email_verified def preview_html_text(request): user = request.user if not is_moderator(user): raise Http404('You are not allowed to view this page!') response_kwargs = {} response_kwargs['content_type'] = 'application/json' request_data = json.loads(request.body.decode("utf-8")) html_text = get_html_text(request_data['description']) return HttpResponse(json.dumps({"data": html_text}), **response_kwargs) @login_required @email_verified def get_next_unit(request, course_id, module_id, current_unit_id=None, first_unit=None): user = request.user course = Course.objects.prefetch_related("learning_module").get( id=course_id) if user not in course.students.all(): raise Http404('You are not enrolled for this course!') learning_module = course.learning_module.prefetch_related( "learning_unit").get(id=module_id) if current_unit_id: current_learning_unit = learning_module.learning_unit.get( id=current_unit_id) else: next_module = course.next_module(learning_module.id) return my_redirect("/exam/quizzes/view_module/{0}/{1}".format( next_module.id, course_id)) if first_unit: next_unit = current_learning_unit else: next_unit = learning_module.get_next_unit(current_learning_unit.id) course_status, created = CourseStatus.objects.get_or_create( user=user, course_id=course_id, ) # Add learning unit to completed units list if not first_unit: course_status.completed_units.add(current_learning_unit.id) # Update course completion percentage _update_course_percent(course, user) # if last unit of current module go to next module is_last_unit = course.is_last_unit(learning_module, current_learning_unit.id) if is_last_unit: next_module = course.next_module(learning_module.id) return my_redirect("/exam/quizzes/view_module/{0}/{1}/".format( next_module.id, course.id)) if next_unit.type == "quiz": return my_redirect("/exam/start/{0}/{1}/{2}".format( next_unit.quiz.questionpaper_set.get().id, module_id, course_id)) else: return my_redirect("/exam/show_lesson/{0}/{1}/{2}".format( next_unit.lesson.id, module_id, course_id)) @login_required @email_verified def design_course(request, course_id): user = request.user if not is_moderator(user): raise Http404('You are not allowed to view this page!') course = Course.objects.get(id=course_id) if not course.is_creator(user) and not course.is_teacher(user): raise Http404('This course does not belong to you') context = {} if request.method == "POST": if "Add" in request.POST: add_values = request.POST.getlist("module_list") to_add_list = [] if add_values: ordered_modules = course.get_learning_modules() if ordered_modules.exists(): start_val = ordered_modules.last().order + 1 else: start_val = 1 for order, value in enumerate(add_values, start_val): learning_module = LearningModule.objects.get(id=int(value)) learning_module.order = order learning_module.save() to_add_list.append(learning_module) course.learning_module.add(*to_add_list) if "Change" in request.POST: order_list = request.POST.get("ordered_list").split(",") for order in order_list: learning_unit, learning_order = order.split(":") if learning_order: learning_module = course.learning_module.get( id=learning_unit) learning_module.order = learning_order learning_module.save() if "Remove" in request.POST: remove_values = request.POST.getlist("delete_list") if remove_values: course.learning_module.remove(*remove_values) if "Change_prerequisite" in request.POST: unit_list = request.POST.getlist("check_prereq") for unit in unit_list: learning_module = course.learning_module.get(id=unit) learning_module.toggle_check_prerequisite() learning_module.save() added_learning_modules = course.get_learning_modules() all_learning_modules = LearningModule.objects.filter( creator=user, is_trial=False) learning_modules = set(all_learning_modules) - set(added_learning_modules) context['added_learning_modules'] = added_learning_modules context['learning_modules'] = learning_modules context['course_id'] = course_id return my_render_to_response( request, 'yaksh/design_course_session.html', context ) @login_required @email_verified def view_module(request, module_id, course_id, msg=None): user = request.user course = Course.objects.get(id=course_id) if user not in course.students.all(): raise Http404('You are not enrolled for this course!') context = {} if not course.active or not course.is_active_enrollment(): msg = "{0} is either expired or not active".format(course.name) return course_modules(request, course_id, msg) learning_module = course.learning_module.get(id=module_id) if not learning_module.active: msg = "{0} is not active".format(learning_module.name) return course_modules(request, course_id, msg) all_modules = course.get_learning_modules() if learning_module.has_prerequisite(): if not learning_module.is_prerequisite_passed(user, course): msg = "You have not completed the module previous to {0}".format( learning_module.name) return course_modules(request, course_id, msg) learning_units = learning_module.get_learning_units() context['learning_units'] = learning_units context['learning_module'] = learning_module context['first_unit'] = learning_units.first() context['all_modules'] = all_modules context['user'] = user context['course'] = course context['state'] = "module" context['msg'] = msg return my_render_to_response(request, 'yaksh/show_video.html', context) @login_required @email_verified def course_modules(request, course_id, msg=None): user = request.user course = Course.objects.get(id=course_id) if user not in course.students.all(): msg = 'You are not enrolled for this course!' return quizlist_user(request, msg=msg) if not course.active or not course.is_active_enrollment(): msg = "{0} is either expired or not active".format(course.name) return quizlist_user(request, msg=msg) learning_modules = course.get_learning_modules() context = {"course": course, "user": user, "msg": msg} course_status = CourseStatus.objects.filter(course=course, user=user) context['course_percentage'] = course.get_completion_percent(user) context['modules'] = [ (module, module.get_module_complete_percent(course, user)) for module in learning_modules ] if course_status.exists(): course_status = course_status.first() if not course_status.grade: course_status.set_grade() context['grade'] = course_status.get_grade() return my_render_to_response(request, 'yaksh/course_modules.html', context) @login_required @email_verified def course_status(request, course_id): user = request.user if not is_moderator(user): raise Http404('You are not allowed to view this page!') course = get_object_or_404(Course, pk=course_id) if not course.is_creator(user) and not course.is_teacher(user): raise Http404('This course does not belong to you') students = course.get_only_students() stud_details = [(student, course.get_grade(student), course.get_completion_percent(student), course.get_current_unit(student)) for student in students] context = { 'course': course, 'student_details': stud_details, 'state': 'course_status' } return my_render_to_response(request, 'yaksh/course_detail.html', context) def _update_unit_status(course_id, user, unit): """ Update course status with current unit """ course_status, created = CourseStatus.objects.get_or_create( user=user, course_id=course_id, ) # make next available unit as current unit course_status.set_current_unit(unit) def _update_course_percent(course, user): course_status, created = CourseStatus.objects.get_or_create( user=user, course=course, ) # Update course completion percent modules = course.get_learning_modules() course_status.percent_completed = course.percent_completed(user, modules) course_status.save() @login_required @email_verified def preview_questionpaper(request, questionpaper_id): user = request.user if not is_moderator(user): raise Http404('You are not allowed to view this page!') paper = QuestionPaper.objects.get(id=questionpaper_id) if not paper.quiz.creator == user: raise Http404('This questionpaper does not belong to you') context = { 'questions': paper._get_questions_for_answerpaper(), 'paper': paper, } return my_render_to_response( request, 'yaksh/preview_questionpaper.html', context ) @login_required @email_verified def get_user_data(request, course_id, student_id): user = request.user data = {} response_kwargs = {} response_kwargs['content_type'] = 'application/json' course = Course.objects.get(id=course_id) if not is_moderator(user): data['msg'] = 'You are not a moderator' data['status'] = False elif not course.is_creator(user) and not course.is_teacher(user): msg = dedent( """\ You are neither course creator nor course teacher for {0} """.format(course.name) ) data['msg'] = msg data['status'] = False else: student = User.objects.get(id=student_id) data['status'] = True modules = course.get_learning_modules() module_percent = [ (module, module.get_module_complete_percent(course, student)) for module in modules ] data['modules'] = module_percent _update_course_percent(course, student) data['course_percentage'] = course.get_completion_percent(student) data['student'] = student template_path = os.path.join( os.path.dirname(__file__), "templates", "yaksh", "user_status.html" ) with open(template_path) as f: template_data = f.read() template = Template(template_data) context = Context(data) data = template.render(context) return HttpResponse(json.dumps({"user_data": data}), **response_kwargs) @login_required @email_verified def download_course(request, course_id): user = request.user course = get_object_or_404(Course, pk=course_id) if (not course.is_creator(user) and not course.is_teacher(user) and not course.is_student(user)): raise Http404("You are not allowed to download {0} course".format( course.name)) if not course.has_lessons(): raise Http404("{0} course does not have any lessons".format( course.name)) current_dir = os.path.dirname(__file__) course_name = course.name.replace(" ", "_") # Static files required for styling in html template static_files = {"js": ["bootstrap.min.js", "jquery-1.9.1.min.js", "video.js"], "css": ["bootstrap.min.css", "video-js.css", "offline.css"], "images": ["yaksh_banner.png"]} zip_file = course.create_zip(current_dir, static_files) zip_file.seek(0) response = HttpResponse(content_type='application/zip') response['Content-Disposition'] = 'attachment; filename={0}.zip'.format( course_name ) response.write(zip_file.read()) return response