def result(request, quiz_code):
try:
quiz = get_object_or_404(Quiz, quiz_code=quiz_code)
if not quiz.submitted:
# quiz is not submitted yet
return render(request, "what/result.html", {
"student": quiz.student,
"quiz_url": Utils.get_quiz_url(quiz_code),
"user_message": _("Hello,"),
"message": "quiz_not_submitted"
})
else:
# display results
try:
score = round(quiz.score * 100 / quiz.max_score)
except ZeroDivisionError:
score = 0
return render(request, "what/result.html", {
"quiz_code": quiz_code,
"quiz_name": quiz.annal.annal_name,
"score": score,
"start_time": quiz.start_time,
"finish_time": Utils.format_duration(
quiz.annal.annal_duration - quiz.finish_time),
"number_of_questions": quiz.number_of_questions,
"student": quiz.student,
"user_message": _("Hello,"),
"message": "show_result",
})
except Quiz.MultipleObjectsReturned:
# shouldn't happen because quiz_code must be unique
raise
def signin(request):
try:
if request.method == "POST" and "form-username" in request.POST:
if request.POST['form-username'] and request.POST['form-password']:
user = authenticate(username=request.POST['form-username'],
password=request.POST['form-password'])
if user and user.is_active:
# account exists and is enabled
request.session['username'] = user.username
request.session['userid'] = user.id
return render(
request, "what/redirect.html", {
"redirect_url": Utils.get_app_url(),
"message": "login_success",
})
elif user:
# account exists but is disabled
return render(request, "what/login.html",
{"message": "account_disabled"})
else:
# username or password incorrect
return render(request, "what/login.html",
{"message": "login_error"})
else:
# username and/or password missing
return render(request, "what/login.html", {
"message": "login_missing",
})
else:
# show the login form
return render(request, "what/login.html", {
"message": "form_login",
})
except KeyError:
return render(request, "what/login.html", {"message": "login_missing"})
def signin(request):
try:
if request.method == "POST" and "form-username" in request.POST:
if request.POST['form-username'] and request.POST['form-password']:
user = authenticate(username=request.POST['form-username'],
password=request.POST['form-password'])
if user and user.is_active:
# account exists and is enabled
request.session['username'] = user.username
request.session['userid'] = user.id
return render(request, "what/redirect.html", {
"redirect_url": Utils.get_app_url(),
"message": "login_success",
})
elif user:
# account exists but is disabled
return render(request, "what/login.html",
{"message": "account_disabled"})
else:
# username or password incorrect
return render(request, "what/login.html",
{"message": "login_error"})
else:
# username and/or password missing
return render(request, "what/login.html", {
"message": "login_missing",
})
else:
# show the login form
return render(request, "what/login.html", {
"message": "form_login",
})
except KeyError:
return render(request, "what/login.html", {"message": "login_missing"})
def func_wrapper(*args, **kwargs):
request = Utils.prepare_request(args[0])
if len(args) > 1:
(*args, ) = (request, ) + args[1:]
else:
(*args, ) = (request, )
return func(*args, **kwargs)
def cp_student_quizzes(request, eid, qindex=0):
"""for AJAX calls"""
quizzes = Quiz.objects.filter(student__id=eid).values(
"annal", "submitted", "number_of_questions", "start_time",
"finish_time", "score", "max_score")
try:
q = quizzes[int(qindex)]
if q['max_score']:
q['score'] = "{}/100".format(
round(100 * q['score'] / q['max_score']))
else:
q['score'] = "0/100"
annal = Annal.objects.filter(id=q['annal'])
if annal:
q['annal'] = annal[0].annal_name
else:
q['annal'] = "--"
if not q['start_time']:
q['start_time'] = "--"
else:
q['start_time'] = q['start_time'].strftime("%d/%m/%Y %H:%M")
q['submitted'] = _("Yes") if q['submitted'] else _("No")
q['finish_time'] = Utils.format_duration(annal[0].annal_duration -
q['finish_time'])
q['student_id'] = eid
return HttpResponse(json.dumps(q), content_type="application/json")
except:
return HttpResponse(json.dumps({}), content_type="application/json")
def cp_student_quizzes(request, eid, qindex=0):
"""for AJAX calls"""
quizzes = Quiz.objects.filter(student__id=eid).values("annal", "submitted",
"number_of_questions", "start_time", "finish_time", "score", "max_score")
try:
q = quizzes[int(qindex)]
if q['max_score']:
q['score'] = "{}/100".format(round(100 * q['score'] / q['max_score']))
else:
q['score'] = "0/100"
annal = Annal.objects.filter(id=q['annal'])
if annal:
q['annal'] = annal[0].annal_name
else:
q['annal'] = "--"
if not q['start_time']:
q['start_time'] = "--"
else:
q['start_time'] = q['start_time'].strftime("%d/%m/%Y %H:%M")
q['submitted'] = _("Yes") if q['submitted'] else _("No")
q['finish_time'] = Utils.format_duration(annal[0].annal_duration - q['finish_time'])
q['student_id'] = eid
return HttpResponse(json.dumps(q), content_type="application/json")
except:
return HttpResponse(json.dumps({}), content_type="application/json")
def func_wrapper(*args, **kwargs): request = Utils.prepare_request(args[0]) if len(args) > 1: (*args,) = (request,) + args[1:] else: (*args,) = (request,) return func(*args, **kwargs)
def func_wrapper(*args, **kwargs):
request = Utils.prepare_request(args[0])
if not "userid" in request.session:
return redirect("login")
if len(args) > 1:
(*args, ) = (request, ) + args[1:]
else:
(*args, ) = (request, )
return func(*args, **kwargs)
def func_wrapper(*args, **kwargs):
request = Utils.prepare_request(args[0])
if not "userid" in request.session:
return redirect("login")
if len(args) > 1:
(*args,) = (request,) + args[1:]
else:
(*args,) = (request,)
return func(*args, **kwargs)
def signout(request):
logout(request)
if "username" in request.session:
del request.session['username']
if "userid" in request.session:
del request.session['userid']
return render(request, "what/redirect.html", {
"redirect_url": Utils.get_app_url(),
"message": "logout_success",
})
def result(request, quiz_code):
try:
quiz = get_object_or_404(Quiz, quiz_code=quiz_code)
if not quiz.submitted:
# quiz is not submitted yet
return render(
request, "what/result.html", {
"student": quiz.student,
"quiz_url": Utils.get_quiz_url(quiz_code),
"user_message": _("Hello,"),
"message": "quiz_not_submitted"
})
else:
# display results
try:
score = round(quiz.score * 100 / quiz.max_score)
except ZeroDivisionError:
score = 0
return render(
request, "what/result.html", {
"quiz_code":
quiz_code,
"quiz_name":
quiz.annal.annal_name,
"score":
score,
"start_time":
quiz.start_time,
"finish_time":
Utils.format_duration(quiz.annal.annal_duration -
quiz.finish_time),
"number_of_questions":
quiz.number_of_questions,
"student":
quiz.student,
"user_message":
_("Hello,"),
"message":
"show_result",
})
except Quiz.MultipleObjectsReturned:
# shouldn't happen because quiz_code must be unique
raise
def signout(request):
logout(request)
if "username" in request.session:
del request.session['username']
if "userid" in request.session:
del request.session['userid']
return render(request, "what/redirect.html", {
"redirect_url": Utils.get_app_url(),
"message": "logout_success",
})
def cp_annals(request):
alert_status = ""
message = ""
if request.method == "GET":
# search annal
if "q" in request.GET and request.GET['q']:
annals = Annal.objects.filter(
annal_name__icontains=request.GET['q'])
if annals:
message = _(
"<strong>{} annals</strong> found matching your search.".
format(len(annals)))
alert_status = "alert-info"
else:
message = _(
"<strong>No annals</strong> found matching your search.")
alert_status = "alert-warning"
try:
page_num = int(request.GET['page'])
except:
page_num = 1
[pages_count, page_num,
annals] = Utils.get_from_page(annals, page_num)
Utils.process_annals(annals)
return render(
request, "what/cp_annals.html", {
"not_index_page":
True,
"message":
mark_safe(message),
"alert_status":
alert_status,
"page_num":
page_num,
"previous_page":
max(1, page_num - 1),
"next_page":
min(pages_count, page_num + 1),
"displayed_pages":
Utils.get_displayed_pages(pages_count, page_num),
"search_term":
request.GET['q'],
"annals":
annals,
})
if request.method == "POST":
# delete annal
if "changelist-action" in request.POST and request.POST[
'changelist-action'] == "delete":
annal_ids = []
for element in request.POST:
if element.startswith("sel-annal-") and request.POST[element]:
try:
annal_ids.append(int(element[10:]))
except:
continue
try:
Annal.objects.filter(id__in=annal_ids).delete()
message = _("{} annal(s) deleted.".format(len(annal_ids)))
alert_status = "alert-success"
except:
message = _(
"Due to an unknown error, the selected annal(s) could not be deleted."
)
alert_status = "alert-danger"
elif "annal-action" in request.POST:
# add annal
if request.POST['annal-action'] == "add":
# TODO: check for teacher access
try:
this_teacher = Teacher.objects.get(
user__username=request.session['username'])
if "annal_enabled" in request.POST and request.POST[
'annal_enabled'] == 'on':
enabled = True
else:
enabled = False
# TODO: use html.escape for 'rules' and allow markdown or rst instead of html
rules = request.POST['annal_rules']
# TODO: convert from different units of times to seconds for 'duration'
duration = request.POST['annal_duration']
if "annal_reveal_answers" in request.POST and request.POST[
'annal_reveal_answers'] == 'on':
show_answers = True
else:
show_answers = False
if "annal_starts_on_hidden" in request.POST and request.POST[
'annal_starts_on_hidden']:
auto_enable = True
auto_enable_date = Utils.convert_datetime(
request.POST['annal_starts_on_text'])
else:
auto_enable = False
auto_enable_date = None
if "annal_ends_on_hidden" in request.POST and request.POST[
'annal_ends_on_hidden']:
auto_disable = True
auto_disable_date = Utils.convert_datetime(
request.POST['annal_ends_on_text'])
else:
auto_disable = False
auto_disable_date = None
new_annal = Annal(
annal_name=(request.POST['annal_name']).strip(),
teacher=this_teacher,
enabled=enabled,
rules=rules,
annal_duration=duration,
show_correct_answers_at_end=show_answers,
auto_enable=auto_enable,
auto_enable_date=auto_enable_date,
auto_disable=auto_disable,
auto_disable_date=auto_disable_date)
new_annal.save()
message = _(
"Annal <strong>{}</strong> is successfully added.".
format(request.POST['annal_name']))
alert_status = "alert-success"
except:
message = _(
"Due to an unknown error, the annal could not be created."
)
alert_status = "alert-danger"
# edit annal
elif request.POST['annal-action'] == "edit":
try:
# TODO: check for teacher access
this_teacher = Teacher.objects.get(
user__username=request.session['username'])
edited_annal = Annal(id=request.POST['annal_id'])
edited_annal.annal_name = request.POST['annal_name']
if "annal_enabled" in request.POST:
edited_annal.enabled = request.POST['annal_enabled']
else:
edited_annal.enabled = False
if "annal_reveal_answers" in request.POST:
edited_annal.show_correct_answers_at_end = request.POST[
'annal_reveal_answers']
else:
edited_annal.show_correct_answers_at_end = False
edited_annal.annal_duration = int(
request.POST['annal_duration'])
# TODO: safely escape 'rules' content
# TODO: deal with different datetime formats
edited_annal.rules = request.POST['annal_rules']
if "annal_starts_on_checkbox" in request.POST:
if request.POST['annal_starts_on_checkbox'] == "on":
edited_annal.auto_enable = True
starts_on_date = request.POST[
'annal_starts_on_text'].replace(
"midnight", "12:00 am")
edited_annal.auto_enable_date = datetime.strptime(
starts_on_date, "%m/%d/%Y %I:%M %p")
else:
edited_annal.auto_enable = False
else:
edited_annal.auto_enable = False
if "annal_ends_on_checkbox" in request.POST:
if request.POST['annal_ends_on_checkbox'] == "on":
edited_annal.auto_disable = True
ends_on_date = request.POST[
'annal_ends_on_text'].replace(
"midnight", "12:00 am")
edited_annal.auto_disable_date = datetime.strptime(
ends_on_date, "%m/%d/%Y %I:%M %p")
else:
edited_annal.auto_disable = False
else:
edited_annal.auto_disable = False
edited_annal.teacher = this_teacher
edited_annal.save()
message = _(
"Annal <strong>{}</strong> is successfully saved.".
format(request.POST['annal_name']))
alert_status = "alert-success"
except:
message = _(
"Due to an unknown error, the annal could not be saved to database."
)
alert_status = "alert-danger"
annals = Annal.objects.all().order_by("annal_name")
try:
page_num = int(request.GET['page'])
except:
page_num = 1
[pages_count, page_num, annals] = Utils.get_from_page(annals, page_num)
Utils.process_annals(annals)
return render(
request, "what/cp_annals.html", {
"not_index_page": True,
"alert_status": alert_status,
"message": mark_safe(message),
"page_num": page_num,
"previous_page": max(1, page_num - 1),
"next_page": min(pages_count, page_num + 1),
"displayed_pages": Utils.get_displayed_pages(
pages_count, page_num),
"annals": annals,
})
def cp_annals(request):
alert_status = ""
message = ""
if request.method == "GET":
# search annal
if "q" in request.GET and request.GET['q']:
annals = Annal.objects.filter(annal_name__icontains=request.GET['q'])
if annals:
message = _("<strong>{} annals</strong> found matching your search.".format(len(annals)))
alert_status = "alert-info"
else:
message = _("<strong>No annals</strong> found matching your search.")
alert_status = "alert-warning"
try:
page_num = int(request.GET['page'])
except:
page_num = 1
[pages_count, page_num, annals] = Utils.get_from_page(annals, page_num)
Utils.process_annals(annals)
return render(request, "what/cp_annals.html", {
"not_index_page": True,
"message": mark_safe(message),
"alert_status": alert_status,
"page_num": page_num,
"previous_page": max(1, page_num - 1),
"next_page": min(pages_count, page_num + 1),
"displayed_pages": Utils.get_displayed_pages(pages_count, page_num),
"search_term": request.GET['q'],
"annals": annals,
})
if request.method == "POST":
# delete annal
if "changelist-action" in request.POST and request.POST['changelist-action'] == "delete":
annal_ids = []
for element in request.POST:
if element.startswith("sel-annal-") and request.POST[element]:
try:
annal_ids.append(int(element[10:]))
except:
continue
try:
Annal.objects.filter(id__in=annal_ids).delete()
message = _("{} annal(s) deleted.".format(len(annal_ids)))
alert_status = "alert-success"
except:
message = _("Due to an unknown error, the selected annal(s) could not be deleted.")
alert_status = "alert-danger"
elif "annal-action" in request.POST:
# add annal
if request.POST['annal-action'] == "add":
# TODO: check for teacher access
try:
this_teacher = Teacher.objects.get(user__username=request.session['username'])
if "annal_enabled" in request.POST and request.POST['annal_enabled'] == 'on':
enabled = True
else:
enabled = False
# TODO: use html.escape for 'rules' and allow markdown or rst instead of html
rules = request.POST['annal_rules']
# TODO: convert from different units of times to seconds for 'duration'
duration = request.POST['annal_duration']
if "annal_reveal_answers" in request.POST and request.POST['annal_reveal_answers'] == 'on':
show_answers = True
else:
show_answers = False
if "annal_starts_on_hidden" in request.POST and request.POST['annal_starts_on_hidden']:
auto_enable = True
auto_enable_date = Utils.convert_datetime(request.POST['annal_starts_on_text'])
else:
auto_enable = False
auto_enable_date = None
if "annal_ends_on_hidden" in request.POST and request.POST['annal_ends_on_hidden']:
auto_disable = True
auto_disable_date = Utils.convert_datetime(request.POST['annal_ends_on_text'])
else:
auto_disable = False
auto_disable_date = None
new_annal = Annal(annal_name=(request.POST['annal_name']).strip(), teacher=this_teacher,
enabled=enabled, rules=rules, annal_duration=duration, show_correct_answers_at_end=show_answers,
auto_enable=auto_enable, auto_enable_date=auto_enable_date,
auto_disable=auto_disable, auto_disable_date=auto_disable_date)
new_annal.save()
message = _("Annal <strong>{}</strong> is successfully added.".format(request.POST['annal_name']))
alert_status = "alert-success"
except:
message = _("Due to an unknown error, the annal could not be created.")
alert_status = "alert-danger"
# edit annal
elif request.POST['annal-action'] == "edit":
try:
# TODO: check for teacher access
this_teacher = Teacher.objects.get(user__username=request.session['username'])
edited_annal = Annal(id=request.POST['annal_id'])
edited_annal.annal_name = request.POST['annal_name']
if "annal_enabled" in request.POST:
edited_annal.enabled = request.POST['annal_enabled']
else:
edited_annal.enabled = False
if "annal_reveal_answers" in request.POST:
edited_annal.show_correct_answers_at_end = request.POST['annal_reveal_answers']
else:
edited_annal.show_correct_answers_at_end = False
edited_annal.annal_duration = int(request.POST['annal_duration'])
# TODO: safely escape 'rules' content
# TODO: deal with different datetime formats
edited_annal.rules = request.POST['annal_rules']
if "annal_starts_on_checkbox" in request.POST:
if request.POST['annal_starts_on_checkbox'] == "on":
edited_annal.auto_enable = True
starts_on_date = request.POST['annal_starts_on_text'].replace("midnight", "12:00 am")
edited_annal.auto_enable_date = datetime.strptime(starts_on_date, "%m/%d/%Y %I:%M %p")
else:
edited_annal.auto_enable = False
else:
edited_annal.auto_enable = False
if "annal_ends_on_checkbox" in request.POST:
if request.POST['annal_ends_on_checkbox'] == "on":
edited_annal.auto_disable = True
ends_on_date = request.POST['annal_ends_on_text'].replace("midnight", "12:00 am")
edited_annal.auto_disable_date = datetime.strptime(ends_on_date, "%m/%d/%Y %I:%M %p")
else:
edited_annal.auto_disable = False
else:
edited_annal.auto_disable = False
edited_annal.teacher = this_teacher
edited_annal.save()
message = _("Annal <strong>{}</strong> is successfully saved.".format(request.POST['annal_name']))
alert_status = "alert-success"
except:
message = _("Due to an unknown error, the annal could not be saved to database.")
alert_status = "alert-danger"
annals = Annal.objects.all().order_by("annal_name")
try:
page_num = int(request.GET['page'])
except:
page_num = 1
[pages_count, page_num, annals] = Utils.get_from_page(annals, page_num)
Utils.process_annals(annals)
return render(request, "what/cp_annals.html", {
"not_index_page": True,
"alert_status": alert_status,
"message": mark_safe(message),
"page_num": page_num,
"previous_page": max(1, page_num - 1),
"next_page": min(pages_count, page_num + 1),
"displayed_pages": Utils.get_displayed_pages(pages_count, page_num),
"annals": annals,
})
def quiz(request, quiz_code):
try:
if request.method == "POST" and "remaining-time-heidden" in request.POST:
# quiz answered are POSTed
quiz = get_object_or_404(Quiz, quiz_code=quiz_code)
quiz.submitted = True
if quiz.start_time and Utils.quiz_expired(quiz):
# quiz has already expired
quiz.save()
return render(request, "what/quiz.html", {
"student": quiz.student,
"rules": quiz.annal.rules,
"result_url": Utils.get_result_url(quiz_code),
"user_message": _("Hello,"),
"message": "quiz_expired",
})
elif quiz.start_time:
# calculate the score
score = 0
max_score = 0
student_answers = []
for key in request.POST.keys():
if key.startswith("chosen-answer-q"):
try:
question = get_object_or_404(Question, id=int(key[15:]))
max_score += question.points_rewarded
answer = get_object_or_404(Answer, id=int(request.POST[key]))
student_answers.append(answer)
if answer.answer_is_correct:
score += question.points_rewarded
except ValueError:
# non-int instead of question/answer id
continue
quiz.student_answers = student_answers
quiz.score = score
quiz.max_score = max_score
try:
quiz.finish_time = max(int(request.POST.get("remaining-time-hidden", 0)), 0)
except:
quiz.finish_time = 0
quiz.save()
return redirect("result", quiz_code=quiz_code)
else:
# dude, how did you get here?!
raise Http404
else:
quiz = get_object_or_404(Quiz, quiz_code=quiz_code)
is_enabled = quiz.annal.enabled
if quiz.annal.auto_enable and quiz.annal.auto_enable_date:
if Utils.date_is_in_past(quiz.annal.auto_enable_date):
is_enabled = True
if quiz.annal.auto_disable and quiz.annal.auto_disable_date:
if Utils.date_is_in_past(quiz.annal.auto_disable_date):
is_enabled = False
quiz.annal.enabled = is_enabled
quiz.annal.save()
quiz.save()
if not is_enabled:
# Quiz is disabled
return render(request, "what/quiz.html", {
"student": quiz.student,
"rules": quiz.annal.rules,
"result_url": Utils.get_result_url(quiz_code),
"user_message": _("Hello,"),
"message": "quiz_disabled",
})
if quiz.submitted:
# User cannot take the quiz twice
return render(request, "what/quiz.html", {
"student": quiz.student,
"rules": quiz.annal.rules,
"result_url": Utils.get_result_url(quiz_code),
"user_message": _("Hello,"),
"message": "quiz_submitted",
})
else:
if quiz.start_time and Utils.quiz_expired(quiz):
# quiz time has already expired
quiz.submitted = True
quiz.save()
return render(request, "what/quiz.html", {
"student": quiz.student,
"rules": quiz.annal.rules,
"result_url": Utils.get_result_url(quiz_code),
"user_message": _("Hello,"),
"message": "quiz_expired",
})
# show the questions and start the quiz
quiz.start_time = datetime.now()
if quiz.selected_questions.all():
questions = quiz.selected_questions.all()
else:
questions = Question.objects.filter(annal=quiz.annal).order_by(
"?")[:quiz.number_of_questions]
quiz.selected_questions.add(*questions)
quiz.save()
answers = []
for q in questions:
answers.append(Answer.objects.filter(question=q).order_by("?"))
return render(request, "what/quiz.html", {
"quiz": quiz,
"rules": quiz.annal.rules,
"teacher": quiz.annal.teacher.user,
"duration": Utils.format_duration(quiz.annal.annal_duration),
"student": quiz.student,
"indexes": range(len(questions)),
"questions": list(questions),
"answers": answers,
"user_message": _("Good luck,"),
"message": "show_quiz",
})
except Quiz.MultipleObjectsReturned:
# shouldn't happen because quiz_code must be unique
raise
def cp_students(request):
alert_status = ""
message = ""
if request.method == "GET":
# search student
if "q" in request.GET and request.GET['q']:
students = Student.objects.filter(
student_name__icontains=request.GET['q'])
if students:
message = _(
"<strong>{} students</strong> found matching your search.".
format(len(students)))
alert_status = "alert-info"
else:
message = _(
"<strong>No students</strong> found matching your search.")
alert_status = "alert-warning"
try:
page_num = int(request.GET['page'])
except:
page_num = 1
[pages_count, page_num,
students] = Utils.get_from_page(students, page_num)
return render(
request, "what/cp_students.html", {
"not_index_page":
True,
"message":
mark_safe(message),
"alert_status":
alert_status,
"page_num":
page_num,
"previous_page":
max(1, page_num - 1),
"next_page":
min(pages_count, page_num + 1),
"displayed_pages":
Utils.get_displayed_pages(pages_count, page_num),
"search_term":
request.GET['q'],
"students":
students,
})
elif request.method == "POST":
# delete student
if "changelist-action" in request.POST and request.POST[
'changelist-action'] == "delete":
student_ids = []
for element in request.POST:
if element.startswith(
"sel-student-") and request.POST[element]:
try:
student_ids.append(int(element[12:]))
except:
continue
try:
Student.objects.filter(id__in=student_ids).delete()
message = _("{} student(s) deleted.".format(len(student_ids)))
alert_status = "alert-success"
except:
message = _(
"Due to an unknown error, the selected student(s) could not be deleted."
)
alert_status = "alert-danger"
elif "student-action" in request.POST:
# add student
if request.POST['student-action'] == "add":
try:
new_student = Student(
student_name=(request.POST['student_name']).strip())
new_student.save()
message = _(
"Student <strong>{}</strong> is successfully added.".
format(request.POST['student_name']))
alert_status = "alert-success"
except IntegrityError:
message = _("Student already exists in database.")
alert_status = "alert-danger"
except:
message = _(
"Due to an unknown error, the student could not be created."
)
alert_status = "alert-danger"
# edit student
elif request.POST['student-action'] == "edit":
try:
# no need to check for teacher access on changing students
edited_student = Student(id=request.POST['student_id'])
edited_student.student_name = request.POST['student_name']
edited_student.save()
message = _(
"Student <strong>{}</strong> is successfully saved.".
format(request.POST['annal_name']))
alert_status = "alert-success"
except IntegrityError:
message = _(
"Student with same name already exists in database.")
alert_status = "alert-danger"
except:
message = _(
"Due to an unknown error, the student could not be saved to database."
)
alert_status = "alert-danger"
students = Student.objects.all().order_by("student_name")
try:
page_num = int(request.GET['page'])
except:
page_num = 1
[pages_count, page_num, students] = Utils.get_from_page(students, page_num)
return render(
request, "what/cp_students.html", {
"not_index_page": True,
"alert_status": alert_status,
"message": mark_safe(message),
"page_num": page_num,
"previous_page": max(1, page_num - 1),
"next_page": min(pages_count, page_num + 1),
"displayed_pages": Utils.get_displayed_pages(
pages_count, page_num),
"students": students,
})
def save_model(self, request, obj, form, change): if not obj.id: obj.quiz_code = Utils.generate_quiz_code() obj.student.number_of_quizzes += 1 obj.student.save() obj.save()
def quiz(request, quiz_code):
try:
if request.method == "POST" and "remaining-time-heidden" in request.POST:
# quiz answered are POSTed
quiz = get_object_or_404(Quiz, quiz_code=quiz_code)
quiz.submitted = True
if quiz.start_time and Utils.quiz_expired(quiz):
# quiz has already expired
quiz.save()
return render(
request, "what/quiz.html", {
"student": quiz.student,
"rules": quiz.annal.rules,
"result_url": Utils.get_result_url(quiz_code),
"user_message": _("Hello,"),
"message": "quiz_expired",
})
elif quiz.start_time:
# calculate the score
score = 0
max_score = 0
student_answers = []
for key in request.POST.keys():
if key.startswith("chosen-answer-q"):
try:
question = get_object_or_404(Question,
id=int(key[15:]))
max_score += question.points_rewarded
answer = get_object_or_404(Answer,
id=int(
request.POST[key]))
student_answers.append(answer)
if answer.answer_is_correct:
score += question.points_rewarded
except ValueError:
# non-int instead of question/answer id
continue
quiz.student_answers = student_answers
quiz.score = score
quiz.max_score = max_score
try:
quiz.finish_time = max(
int(request.POST.get("remaining-time-hidden", 0)), 0)
except:
quiz.finish_time = 0
quiz.save()
return redirect("result", quiz_code=quiz_code)
else:
# dude, how did you get here?!
raise Http404
else:
quiz = get_object_or_404(Quiz, quiz_code=quiz_code)
is_enabled = quiz.annal.enabled
if quiz.annal.auto_enable and quiz.annal.auto_enable_date:
if Utils.date_is_in_past(quiz.annal.auto_enable_date):
is_enabled = True
if quiz.annal.auto_disable and quiz.annal.auto_disable_date:
if Utils.date_is_in_past(quiz.annal.auto_disable_date):
is_enabled = False
quiz.annal.enabled = is_enabled
quiz.annal.save()
quiz.save()
if not is_enabled:
# Quiz is disabled
return render(
request, "what/quiz.html", {
"student": quiz.student,
"rules": quiz.annal.rules,
"result_url": Utils.get_result_url(quiz_code),
"user_message": _("Hello,"),
"message": "quiz_disabled",
})
if quiz.submitted:
# User cannot take the quiz twice
return render(
request, "what/quiz.html", {
"student": quiz.student,
"rules": quiz.annal.rules,
"result_url": Utils.get_result_url(quiz_code),
"user_message": _("Hello,"),
"message": "quiz_submitted",
})
else:
if quiz.start_time and Utils.quiz_expired(quiz):
# quiz time has already expired
quiz.submitted = True
quiz.save()
return render(
request, "what/quiz.html", {
"student": quiz.student,
"rules": quiz.annal.rules,
"result_url": Utils.get_result_url(quiz_code),
"user_message": _("Hello,"),
"message": "quiz_expired",
})
# show the questions and start the quiz
quiz.start_time = datetime.now()
if quiz.selected_questions.all():
questions = quiz.selected_questions.all()
else:
questions = Question.objects.filter(
annal=quiz.annal).order_by(
"?")[:quiz.number_of_questions]
quiz.selected_questions.add(*questions)
quiz.save()
answers = []
for q in questions:
answers.append(
Answer.objects.filter(question=q).order_by("?"))
return render(
request, "what/quiz.html", {
"quiz":
quiz,
"rules":
quiz.annal.rules,
"teacher":
quiz.annal.teacher.user,
"duration":
Utils.format_duration(quiz.annal.annal_duration),
"student":
quiz.student,
"indexes":
range(len(questions)),
"questions":
list(questions),
"answers":
answers,
"user_message":
_("Good luck,"),
"message":
"show_quiz",
})
except Quiz.MultipleObjectsReturned:
# shouldn't happen because quiz_code must be unique
raise
def get_url(self, obj): return Utils.get_quiz_url(obj.quiz_code)
def get_finish_time(self, obj): return Utils.format_duration(obj.annal.annal_duration - obj.finish_time)
def cp_students(request):
alert_status = ""
message = ""
if request.method == "GET":
# search student
if "q" in request.GET and request.GET['q']:
students = Student.objects.filter(student_name__icontains=request.GET['q'])
if students:
message = _("<strong>{} students</strong> found matching your search.".format(len(students)))
alert_status = "alert-info"
else:
message = _("<strong>No students</strong> found matching your search.")
alert_status = "alert-warning"
try:
page_num = int(request.GET['page'])
except:
page_num = 1
[pages_count, page_num, students] = Utils.get_from_page(students, page_num)
return render(request, "what/cp_students.html", {
"not_index_page": True,
"message": mark_safe(message),
"alert_status": alert_status,
"page_num": page_num,
"previous_page": max(1, page_num - 1),
"next_page": min(pages_count, page_num + 1),
"displayed_pages": Utils.get_displayed_pages(pages_count, page_num),
"search_term": request.GET['q'],
"students": students,
})
elif request.method == "POST":
# delete student
if "changelist-action" in request.POST and request.POST['changelist-action'] == "delete":
student_ids = []
for element in request.POST:
if element.startswith("sel-student-") and request.POST[element]:
try:
student_ids.append(int(element[12:]))
except:
continue
try:
Student.objects.filter(id__in=student_ids).delete()
message = _("{} student(s) deleted.".format(len(student_ids)))
alert_status = "alert-success"
except:
message = _("Due to an unknown error, the selected student(s) could not be deleted.")
alert_status = "alert-danger"
elif "student-action" in request.POST:
# add student
if request.POST['student-action'] == "add":
try:
new_student = Student(student_name=(request.POST['student_name']).strip())
new_student.save()
message = _("Student <strong>{}</strong> is successfully added.".format(request.POST['student_name']))
alert_status = "alert-success"
except IntegrityError:
message = _("Student already exists in database.")
alert_status = "alert-danger"
except:
message = _("Due to an unknown error, the student could not be created.")
alert_status = "alert-danger"
# edit student
elif request.POST['student-action'] == "edit":
try:
# no need to check for teacher access on changing students
edited_student = Student(id=request.POST['student_id'])
edited_student.student_name = request.POST['student_name']
edited_student.save()
message = _("Student <strong>{}</strong> is successfully saved.".format(request.POST['annal_name']))
alert_status = "alert-success"
except IntegrityError:
message = _("Student with same name already exists in database.")
alert_status = "alert-danger"
except:
message = _("Due to an unknown error, the student could not be saved to database.")
alert_status = "alert-danger"
students = Student.objects.all().order_by("student_name")
try:
page_num = int(request.GET['page'])
except:
page_num = 1
[pages_count, page_num, students] = Utils.get_from_page(students, page_num)
return render(request, "what/cp_students.html", {
"not_index_page": True,
"alert_status": alert_status,
"message": mark_safe(message),
"page_num": page_num,
"previous_page": max(1, page_num - 1),
"next_page": min(pages_count, page_num + 1),
"displayed_pages": Utils.get_displayed_pages(pages_count, page_num),
"students": students,
})
