def retrieve(self, request, pk):
"""
Get the difficult questions for a particular quiz.
"""
group_id = request.GET.get("group_id", None)
# Only return logs when the learner has submitted the Quiz OR
# the coach has deactivated the Quiz. Do not return logs when Quiz is still
# in-progress.
queryset = ExamAttemptLog.objects.filter(
Q(examlog__closed=True) | Q(examlog__exam__active=False),
examlog__exam=pk)
if group_id is not None:
queryset = HierarchyRelationsFilter(queryset).filter_by_hierarchy(
ancestor_collection=group_id, target_user=F("user"))
collection_id = group_id
else:
collection_id = Exam.objects.get(pk=pk).collection_id
data = queryset.values("item",
"content_id").annotate(correct=Sum("correct"))
# Instead of inferring the totals from the number of logs, use the total
# number of people who submitted (if quiz is active) or started the exam
# (if quiz is inactive) as our guide, as people who started the exam
# but did not attempt the question are still important.
total = (HierarchyRelationsFilter(
ExamLog.objects.filter(Q(closed=True) | Q(exam__active=False),
exam_id=pk)).filter_by_hierarchy(
ancestor_collection=collection_id,
target_user=F("user")).count())
for datum in data:
datum["total"] = total
return Response(data)
def retrieve(self, request, pk):
"""
Get the difficult questions for a particular quiz.
"""
group_id = request.GET.get("group_id", None)
queryset = ExamAttemptLog.objects.filter(examlog__exam=pk)
if group_id is not None:
queryset = HierarchyRelationsFilter(queryset).filter_by_hierarchy(
ancestor_collection=group_id, target_user=F("user")
)
collection_id = group_id
else:
collection_id = Exam.objects.get(pk=pk).collection_id
data = queryset.values("item", "content_id").annotate(correct=Sum("correct"))
# Instead of inferring the totals from the number of logs, use the total
# number of people who took the exam as our guide, as people who started the exam
# but did not attempt the question are still important.
total = (
HierarchyRelationsFilter(ExamLog.objects.filter(exam_id=pk))
.filter_by_hierarchy(
ancestor_collection=collection_id, target_user=F("user")
)
.count()
)
for datum in data:
datum["total"] = total
return Response(data)
def get_or_create_classroom_users(**options):
classroom = options["classroom"]
n_users = options["n_users"]
user_data = options["user_data"]
facility = options["facility"]
device_name = options.get("device_name", "")
verbosity = options.get("verbosity", 1)
# The headers in the user_data.csv file that we use to generate user Full Names
# Note, we randomly pick from these to give deliberately varied (and sometimes idiosyncratic)
# Full names - because we should never assume that users have names like us
user_data_name_fields = ["GivenName", "MiddleInitial", "Surname"]
n_in_classroom = (HierarchyRelationsFilter(
FacilityUser.objects.all()).filter_by_hierarchy(
ancestor_collection=classroom, target_user=F("id")).count())
# Only generate new users if there are fewer users than requested.
current_year = datetime.datetime.now().year
n_to_create = n_users - n_in_classroom
if n_to_create > 0:
logger_info(
"Generating {n} user object(s) for class: {classroom} in facility: {facility}"
.format(n=n_to_create, classroom=classroom, facility=facility),
verbosity=verbosity,
)
for i in range(0, n_to_create):
# Get the first base data that does not have a matching user already
base_data = user_data[n_in_classroom + i]
# Randomly create the name from 1 to 3 of the three user name fields
name = " ".join([
base_data[key] for key in random.sample(
user_data_name_fields, random.randint(1, 3))
if base_data[key]
])
if device_name:
# If specified, prepend the device name to the user.
name = "{0} {1}".format(device_name, name)
# calculate birth year
birth_year = str(current_year - int(base_data["Age"]))
# randomly assign gender
gender = random.choice(demographics.choices)[0]
user = FacilityUser.objects.create(
facility=facility,
full_name=name,
username=base_data["Username"],
gender=gender,
birth_year=birth_year,
)
# Set a dummy password so that if we want to login as this learner later, we can.
user.set_password("password")
user.save()
# Add the user to the current classroom
classroom.add_member(user)
return HierarchyRelationsFilter(
FacilityUser.objects.all()).filter_by_hierarchy(
target_user=F("id"), ancestor_collection=classroom)[0:n_users]
def retrieve(self, request, pk):
"""
Get the difficult questions for a particular exercise.
pk maps to the content_id of the exercise in question.
"""
classroom_id = request.GET.get("classroom_id", None)
group_id = request.GET.get("group_id", None)
lesson_id = request.GET.get("lesson_id", None)
queryset = AttemptLog.objects.filter(masterylog__summarylog__content_id=pk)
if lesson_id is not None:
collection_ids = Lesson.objects.get(
id=lesson_id
).lesson_assignments.values_list("collection_id", flat=True)
if group_id is not None:
if (
group_id not in collection_ids
and classroom_id not in collection_ids
):
# In the special case that the group is not in the lesson assignments
# nor the containing classroom, just return an empty queryset.
queryset = AttemptLog.objects.none()
else:
# Only filter by all the collections in the lesson if we are not also
# filtering by a specific group. Otherwise the group should be sufficient.
base_queryset = queryset
# Set starting queryset to null, then OR.
queryset = AttemptLog.objects.none()
for collection_id in collection_ids:
queryset |= HierarchyRelationsFilter(
base_queryset
).filter_by_hierarchy(
ancestor_collection=collection_id, target_user=F("user")
)
queryset = queryset.distinct()
if group_id is not None:
collection_id = group_id or classroom_id
queryset = HierarchyRelationsFilter(queryset).filter_by_hierarchy(
ancestor_collection=collection_id, target_user=F("user")
)
data = (
queryset.values("item")
.annotate(total=Count("correct"))
.annotate(correct=Sum("correct"))
)
return Response(data)
def get_assignments(self, instance):
"""
Returns all Exams and Lessons (and progress) assigned to the requesting User
"""
current_user = self.context["request"].user
# Return only active Lessons that are assigned to the requesting user's groups
# TODO move this to a permission_class on Lesson
lesson_assignments = HierarchyRelationsFilter(
LessonAssignment.objects.all()
).filter_by_hierarchy(
target_user=current_user, ancestor_collection=F("collection")
)
filtered_lessons = Lesson.objects.filter(
lesson_assignments__in=lesson_assignments,
is_active=True,
collection=instance,
).distinct()
exam_assignments = HierarchyRelationsFilter(
ExamAssignment.objects.all()
).filter_by_hierarchy(
target_user=current_user, ancestor_collection=F("collection")
)
filtered_exams = (
Exam.objects.filter(assignments__in=exam_assignments, collection=instance)
.filter(Q(active=True) | Q(examlogs__user=current_user))
.distinct()
)
return {
"lessons": LessonProgressSerializer(
filtered_lessons, many=True, context={"user": current_user}
).data,
"exams": ExamProgressSerializer(
filtered_exams, many=True, context={"user": current_user}
).data,
}
def filter_learner_group(self, queryset, name, value):
return HierarchyRelationsFilter(queryset).filter_by_hierarchy(
ancestor_collection=value, target_user=F("user"))
def filter_collection(self, queryset, name, collection):
return HierarchyRelationsFilter(queryset).filter_by_hierarchy(
target_user=F("user"), ancestor_collection=collection)
