def _calculate_results_impl(course):
"""Calculates the result data for a single course. Returns a list of
`ResultSection` tuples. Each of those tuples contains the questionnaire, the
contributor (or None), a list of (Rating|YesNo|Text|Heading)Result tuples,
the average grade and distribution for that section (or None)."""
# there will be one section per relevant questionnaire--contributor pair
sections = []
# calculate the median values of how many people answered a questionnaire type (lecturer, tutor, ...)
questionnaire_med_answers = defaultdict(list)
questionnaire_max_answers = {}
questionnaire_warning_thresholds = {}
for questionnaire, contribution in questionnaires_and_contributions(course):
max_answers = max([get_number_of_answers(contribution, question) for question in questionnaire.rating_questions], default=0)
questionnaire_max_answers[(questionnaire, contribution)] = max_answers
questionnaire_med_answers[questionnaire].append(max_answers)
for questionnaire, max_answers in questionnaire_med_answers.items():
questionnaire_warning_thresholds[questionnaire] = max(settings.RESULTS_WARNING_PERCENTAGE * median(max_answers), settings.RESULTS_WARNING_COUNT)
for questionnaire, contribution in questionnaires_and_contributions(course):
# will contain one object per question
results = []
for question in questionnaire.question_set.all():
if question.is_rating_question:
answer_counters = get_answers(contribution, question)
answers = get_answers_from_answer_counters(answer_counters)
total_count = len(answers)
average = avg(answers) if total_count > 0 else None
counts = get_counts(answer_counters) if total_count > 0 else None
warning = total_count > 0 and total_count < questionnaire_warning_thresholds[questionnaire]
if question.is_yes_no_question:
if not counts:
approval_count = None
else:
if question.is_positive_yes_no_question:
approval_count = counts[0]
else:
approval_count = counts[4]
results.append(YesNoResult(question, total_count, average, counts, warning, approval_count))
else:
results.append(RatingResult(question, total_count, average, counts, warning))
elif question.is_text_question:
answers = get_textanswers(contribution, question, COMMENT_STATES_REQUIRED_FOR_VISIBILITY)
results.append(TextResult(question=question, answers=answers))
elif question.is_heading_question:
results.append(HeadingResult(question=question))
section_warning = 0 < questionnaire_max_answers[(questionnaire, contribution)] < questionnaire_warning_thresholds[questionnaire]
sections.append(ResultSection(questionnaire, contribution.contributor, contribution.label, results, section_warning))
return sections
def _calculate_results_impl(course):
"""Calculates the result data for a single course. Returns a list of
`ResultSection` tuples. Each of those tuples contains the questionnaire, the
contributor (or None), a list of single result elements, the average grade and
deviation for that section (or None). The result elements are either
`RatingResult` or `TextResult` instances."""
# there will be one section per relevant questionnaire--contributor pair
sections = []
# calculate the median values of how many people answered a questionnaire type (lecturer, tutor, ...)
questionnaire_med_answers = defaultdict(list)
questionnaire_max_answers = {}
questionnaire_warning_thresholds = {}
for questionnaire, contribution in questionnaires_and_contributions(course):
max_answers = max([get_number_of_answers(contribution, question) for question in questionnaire.rating_questions], default=0)
questionnaire_max_answers[(questionnaire, contribution)] = max_answers
questionnaire_med_answers[questionnaire].append(max_answers)
for questionnaire, max_answers in questionnaire_med_answers.items():
questionnaire_warning_thresholds[questionnaire] = max(settings.RESULTS_WARNING_PERCENTAGE * median(max_answers), settings.RESULTS_WARNING_COUNT)
for questionnaire, contribution in questionnaires_and_contributions(course):
# will contain one object per question
results = []
for question in questionnaire.question_set.all():
if question.is_rating_question:
answer_counters = get_answers(contribution, question)
answers = get_answers_from_answer_counters(answer_counters)
total_count = len(answers)
average = avg(answers) if total_count > 0 else None
deviation = pstdev(answers, average) if total_count > 0 else None
counts = get_counts(question, answer_counters)
warning = total_count > 0 and total_count < questionnaire_warning_thresholds[questionnaire]
if question.is_yes_no_question:
if question.is_positive_yes_no_question:
approval_count = counts[1]
else:
approval_count = counts[5]
results.append(YesNoResult(question, total_count, average, deviation, counts, warning, approval_count))
else:
results.append(RatingResult(question, total_count, average, deviation, counts, warning))
elif question.is_text_question:
allowed_states = [TextAnswer.PRIVATE, TextAnswer.PUBLISHED]
answers = get_textanswers(contribution, question, allowed_states)
results.append(TextResult(question=question, answers=answers))
section_warning = questionnaire_max_answers[(questionnaire, contribution)] < questionnaire_warning_thresholds[questionnaire]
sections.append(ResultSection(questionnaire, contribution.contributor, contribution.label, results, section_warning))
return sections
def course_comments(request, semester_id, course_id):
semester = get_object_or_404(Semester, id=semester_id)
course = get_object_or_404(Course, id=course_id)
filter = request.GET.get('filter', None)
if filter is None: # if no parameter is given take session value
filter = request.session.get('filter_comments', False) # defaults to False if no session value exists
else:
filter = {'true': True, 'false': False}.get(filter.lower()) # convert parameter to boolean
request.session['filter_comments'] = filter # store value for session
filter_states = [TextAnswer.NOT_REVIEWED] if filter else None
course_sections = []
contributor_sections = []
for questionnaire, contribution in questionnaires_and_contributions(course):
text_results = []
for question in questionnaire.text_questions:
answers = get_textanswers(contribution, question, filter_states)
if answers:
text_results.append(TextResult(question=question, answers=answers))
if not text_results:
continue
section_list = course_sections if contribution.is_general else contributor_sections
section_list.append(CommentSection(questionnaire, contribution.contributor, contribution.responsible, text_results))
template_data = dict(semester=semester, course=course, course_sections=course_sections, contributor_sections=contributor_sections, filter=filter)
return render(request, "staff_course_comments.html", template_data)
def course_preview(request, semester_id, course_id):
semester = get_object_or_404(Semester, id=semester_id)
course = get_object_or_404(Course, id=course_id)
# build forms
forms = OrderedDict()
for questionnaire, contribution in questionnaires_and_contributions(course):
form = QuestionsForm(request.POST or None, contribution=contribution, questionnaire=questionnaire)
forms[(contribution, questionnaire)] = form
return render_to_response("fsr_course_preview.html", dict(forms=forms.values(), course=course, semester=semester), context_instance=RequestContext(request))
def course_preview(request, semester_id, course_id):
semester = get_object_or_404(Semester, id=semester_id)
course = get_object_or_404(Course, id=course_id)
# build forms
forms = SortedDict()
for questionnaire, contribution in questionnaires_and_contributions(course):
form = QuestionsForm(request.POST or None, contribution=contribution, questionnaire=questionnaire)
forms[(contribution, questionnaire)] = form
return render_to_response("fsr_course_preview.html", dict(forms=forms.values(), course=course, semester=semester), context_instance=RequestContext(request))
def course_preview(request, course_id):
user = request.user
course = get_object_or_404(Course, id=course_id)
# build forms
forms = SortedDict()
for questionnaire, contribution in questionnaires_and_contributions(course):
form = QuestionsForm(request.POST or None, contribution=contribution, questionnaire=questionnaire)
forms[(contribution, questionnaire)] = form
return render_to_response("contributor_course_preview.html", dict(forms=forms.values(), course=course), context_instance=RequestContext(request))
def vote(request, course_id):
# retrieve course and make sure that the user is allowed to vote
course = get_object_or_404(Course, id=course_id)
if not course.can_user_vote(request.user):
raise PermissionDenied
# build forms
forms = SortedDict()
for questionnaire, contribution in questionnaires_and_contributions(
course):
form = QuestionsForm(request.POST or None,
contribution=contribution,
questionnaire=questionnaire)
forms[(contribution, questionnaire)] = form
if all(form.is_valid() for form in forms.values()):
# begin vote operation
with transaction.commit_on_success():
for (contribution, questionnaire), form in forms.items():
for question in questionnaire.question_set.all():
identifier = make_form_identifier(contribution,
questionnaire, question)
value = form.cleaned_data.get(identifier)
if type(value) in [str, unicode]:
value = value.strip()
if value == 6: #no answer
value = None
# store the answer if one was given
if value:
question.answer_class.objects.create(
contribution=contribution,
question=question,
answer=value)
# remember that the user voted already
course.voters.add(request.user)
messages.add_message(request, messages.INFO,
_("Your vote was recorded."))
return redirect('evap.student.views.index')
else:
return render_to_response("student_vote.html",
dict(forms=forms.values(), course=course),
context_instance=RequestContext(request))
def vote(request, course_id):
# retrieve course and make sure that the user is allowed to vote
course = get_object_or_404(Course, id=course_id)
if not course.can_user_vote(request.user):
raise PermissionDenied
# build forms
forms = SortedDict()
for questionnaire, contribution in questionnaires_and_contributions(course):
form = QuestionsForm(request.POST or None, contribution=contribution, questionnaire=questionnaire)
forms[(contribution, questionnaire)] = form
if all(form.is_valid() for form in forms.values()):
# begin vote operation
with transaction.commit_on_success():
for (contribution, questionnaire), form in forms.items():
for question in questionnaire.question_set.all():
identifier = make_form_identifier(contribution, questionnaire, question)
value = form.cleaned_data.get(identifier)
if type(value) in [str, unicode]:
value = value.strip()
if value == 6: #no answer
value = None
# store the answer if one was given
if value:
question.answer_class.objects.create(
contribution=contribution,
question=question,
answer=value)
# remember that the user voted already
course.voters.add(request.user)
messages.add_message(request, messages.INFO, _("Your vote was recorded."))
return redirect('evap.student.views.index')
else:
return render_to_response(
"student_vote.html",
dict(forms=forms.values(),
course=course),
context_instance=RequestContext(request))
def course_comments(request, semester_id, course_id):
semester = get_object_or_404(Semester, id=semester_id)
course = get_object_or_404(Course, id=course_id)
filter = request.GET.get('filter', None)
if filter == None: # if no parameter is given take session value
filter = request.session.get(
'filter_comments',
False) # defaults to False if no session value exists
else:
filter = {
'true': True,
'false': False
}.get(filter.lower()) # convert parameter to boolean
request.session['filter_comments'] = filter # store value for session
filter_states = [TextAnswer.NOT_REVIEWED] if filter else None
course_sections = []
contributor_sections = []
for questionnaire, contribution in questionnaires_and_contributions(
course):
text_results = []
for question in questionnaire.text_questions:
answers = get_textanswers(contribution, question, filter_states)
if answers:
text_results.append(
TextResult(question=question, answers=answers))
if not text_results:
continue
section_list = course_sections if contribution.is_general else contributor_sections
section_list.append(
CommentSection(questionnaire, contribution.contributor,
contribution.responsible, text_results))
template_data = dict(semester=semester,
course=course,
course_sections=course_sections,
contributor_sections=contributor_sections,
filter=filter)
return render(request, "staff_course_comments.html", template_data)
def _calculate_results_impl(course):
"""Calculates the result data for a single course. Returns a list of
`ResultSection` tuples. Each of those tuples contains the questionnaire, the
contributor (or None), a list of single result elements, the average grade and
deviation for that section (or None). The result elements are either
`RatingResult` or `TextResult` instances."""
# there will be one section per relevant questionnaire--contributor pair
sections = []
# calculate the median values of how many people answered a questionnaire type (lecturer, tutor, ...)
questionnaire_med_answers = defaultdict(list)
questionnaire_max_answers = {}
questionnaire_warning_thresholds = {}
for questionnaire, contribution in questionnaires_and_contributions(
course):
max_answers = max([
get_number_of_answers(contribution, question)
for question in questionnaire.rating_questions
],
default=0)
questionnaire_max_answers[(questionnaire, contribution)] = max_answers
questionnaire_med_answers[questionnaire].append(max_answers)
for questionnaire, max_answers in questionnaire_med_answers.items():
questionnaire_warning_thresholds[
questionnaire] = settings.RESULTS_WARNING_PERCENTAGE * median(
max_answers)
for questionnaire, contribution in questionnaires_and_contributions(
course):
# will contain one object per question
results = []
for question in questionnaire.question_set.all():
if question.is_rating_question:
answer_counters = get_answers(contribution, question)
answers = get_answers_from_answer_counters(answer_counters)
total_count = len(answers)
average = avg(answers) if total_count > 0 else None
deviation = pstdev(answers,
average) if total_count > 0 else None
counts = get_counts(answer_counters)
warning = total_count > 0 and total_count < questionnaire_warning_thresholds[
questionnaire]
results.append(
RatingResult(question, total_count, average, deviation,
counts, warning))
elif question.is_text_question:
allowed_states = [TextAnswer.PRIVATE, TextAnswer.PUBLISHED]
answers = get_textanswers(contribution, question,
allowed_states)
results.append(TextResult(question=question, answers=answers))
section_warning = questionnaire_max_answers[(
questionnaire,
contribution)] < questionnaire_warning_thresholds[questionnaire]
sections.append(
ResultSection(questionnaire, contribution.contributor,
contribution.label, results, section_warning))
return sections
