def start_demo_exam(request, test_id):
demogrp = Group.get_demo_group()
test = Test.objects.get(id=int(test_id))
if not test.is_demo: return HttpResponse(status=400)
# Is the student writing an exam right now?
try:
tbw = TestBeingWritten.objects.get(written_by=request.user)
except TestBeingWritten.DoesNotExist:
pass
else:
messages.add_message(request, messages.ERROR, u'Egzamin już jest pisany!')
# Try to automatically detect an exam and term for this one, a demo one
try:
exam = Exam.objects.get(test=test, group=demogrp)
except Exam.DoesNotExist:
exam = Exam(test=test, group=demogrp, name=u'DEMO EGZAMIN', owner=demogrp.teacher)
exam.save()
# Fetch term for this one
try:
term = exam.term_set.all()[0]
except:
term = Term(exam=exam, name=u'DEMO TERMIN', term_time=datetime.now(),
is_progressing=True)
term.save()
# Create a TBW for this student now
tbw = TestBeingWritten(term=term, written_by=request.user)
tbw.save()
tbw.set_test_written(TestWritten(test))
return redirect('/test/')
def setup_ajax(request, exam_id, term_id):
"""POST variable 'students' should be a JSON-encoded list of student IDs
to partake in the test"""
if 'students' not in request.POST: raise HttpResponse(status=400)
try:
trm = Term.objects.get(id=int(term_id))
except:
raise Http404
if trm.exam.group.teacher != request.user:
return HttpResponse(status=403)
# Ok, now we will take those students take these damn exams
try:
students = set([User.objects.get(id=x) for x in json.loads(request.POST['students'])])
except User.DoesNotExist:
return HttpResponse(status=400)
applicable_students = set(get_applicable_students(trm, dont_sort=True))
if not students.issubset(applicable_students):
return HttpResponse(status=403)
# Students can attempt writing exams!
for student in students:
tbw = TestBeingWritten(term=trm, written_by=student)
tbw.save()
tbw.set_test_written(TestWritten(trm.exam.test))
trm.is_progressing = True
trm.save()
# all ready, redirect to supervision
return redirect('/teacher/exams/%s/terms/%s/supervise/' % (trm.exam.id, trm.id))