/
views.py
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/
views.py
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import json
from colorama import Back, Fore, Style, init
from django.contrib.auth import authenticate, login, logout
from django.contrib.auth.decorators import login_required
from django.contrib.auth.models import Group
from django.db.models import Count
from django.db.utils import IntegrityError
from django.dispatch import receiver
import statistics
from django.forms.models import model_to_dict
# Create your views here.
from django.http import JsonResponse
from django.middleware.csrf import get_token
from django.shortcuts import HttpResponse, HttpResponseRedirect, render
from django.utils.decorators import method_decorator
from django.views import View
from django.views.decorators.csrf import csrf_exempt
from drf_yasg.utils import swagger_auto_schema
from rest_framework import generics, viewsets
from rest_framework.authentication import (BasicAuthentication,
SessionAuthentication)
from rest_framework.decorators import api_view, parser_classes
from rest_framework.parsers import FormParser, JSONParser, MultiPartParser
from rest_framework.permissions import IsAuthenticated
from rest_framework.request import Request
from rest_framework.response import Response
from rest_framework.views import APIView
from actor.serializers import LoginSerializer, UserSerializer
from helpers.decorators import user_passes_test
from initial.models import (Course, CourseSection, MarkSheet,
SectionAttendance, SectionMarks, Semester,
StudentAttendance, StudentMarks, Transcript,
split_scsddc)
from initial.serializers import (
SectionAttendanceSerializer,
StudentInfoSectionModelSerializerGetAttendance,CourseSectionSerializer,SectionMarksSerializer)
from student_portal.models import Student
from .forms import TeacherForm
from .models import Teacher
from .serializers import TeacherSerializer
from .signals import attendance_of_day_for_student, marks_for_student
def get_sddc(semester, degree, department, campus, city):
return semester + "_" + degree + "_" + department + "_" + campus + "_" + city
def check_if_teacher(user):
return bool(user.is_teacher)
# Create your views here.
# class TeacherSignupView(View):
# def post(self, request):
# form = TeacherFormValidate(request.POST)
# if form.is_valid():
# print(form.cleaned_data)
# form.save()
# return JsonResponse({'status':"Success"})
# else:
# return JsonResponse(form.errors.get_json_data())
class BaseTeacherLoginView(APIView):
not_user_response = {'message': 'Login Required',
'condtion': False, 'status': 'failure'}
not_teacher_response = {'message': 'User Logged in is Not a Teacher',
'condtion': False, 'status': 'failure'}
@ method_decorator(user_passes_test(lambda u: u.is_authenticated, on_failure_json_response=JsonResponse(not_user_response, status=401)))
@ method_decorator(user_passes_test(check_if_teacher, on_failure_json_response=JsonResponse(not_teacher_response, status=401)))
def dispatch(self, request, *args, **kwargs):
return super().dispatch(request, *args, **kwargs)
class TeacherAttendanceView(BaseTeacherLoginView):
parser_classes = [JSONParser, MultiPartParser]
@csrf_exempt
@swagger_auto_schema()
def post(self, request):
try:
query = request.data
print('Request From : ' + str(request.user))
except json.JSONDecodeError as err:
print(request)
return JsonResponse({'status': 'Failure', 'message': 'Inavlid JSON Object', 'conditon': False, 'error': str(err)})
try:
city = query['city'] # "city":"Karachi"
campus = query['campus'] # "campus":"MainCampus",
# "department":"ComputerSciences",
department = query['department']
degree = query['degree'] # "degree":"BS(CS)",
# "semester_code":"FALL2019",
semester_code = query['semester_code']
course_code = query['course_code'] # "course_code":"CS309",
section = query['section'] # "section":"E"
except KeyError as err:
return JsonResponse({'status': 'Failure', 'message': 'Malformed Query', 'conditon': False, 'missing key': str(err)}, 400)
sddc = get_sddc(semester_code, degree, department, campus, city)
try:
section_object = CourseSection.objects.get(
section_name=section, course_code=course_code, semester_code=sddc, teacher__user__username=str(request.user))
# section_object = CourseSection.objects.get(
# section_name="E", course_code="CS309", semester_code="FALL2019_BS(CS)_ComputerSciences_MainCampus_Karachi", teacher__user__username=str('Abdul.Rehman'))
print(section_object)
except CourseSection.DoesNotExist as err:
return JsonResponse({'status': 'Failure', 'message': 'Invalid Values', 'conditon': False, 'error': str(err)})
students = StudentInfoSectionModelSerializerGetAttendance(
section_object.student_info, many=True, context={'request': (request)}).data
# print(students)
scsddc = section + '_' + course_code + '_' + sddc
try:
attendance_list = SectionAttendance.objects.filter(scsddc=scsddc)
except SectionAttendance.DoesNotExist as err:
return JsonResponse({'status': 'Failure', 'message': 'Invalid Values', 'conditon': False, 'error': str(err)})
class_attendance = SectionAttendanceSerializer(
attendance_list, many=True, context={'request': (request)}).data
print('Atteddance for this section : ' + str(len(attendance_list)))
print('Students in this Section : ' + str(len(students)))
# print(class_attendance)
attendance_data = {
'campus_name': city,
'semester': semester_code,
'course_code': course_code,
'student_cnt': len(students),
'attendance_cnt': len(attendance_list),
'student_sheets': students,
'class_sheet': class_attendance,
'section': query['section']
}
return JsonResponse({'status': 'success', 'attendance_data': attendance_data})
class TeacherMarksView(BaseTeacherLoginView):
def post(self, request):
marks_type = request.POST['marks_type']
scsddc = request.POST['scsddc']
if marks_type == None or marks_type == "" or scsddc == None or scsddc == "" or scsddc == "null":
return JsonResponse({"Failure": "Parameters Are Not Valid"}, safe=False, status=403)
student_marks = StudentMarks.objects.filter(
marks_type=marks_type, scsddc=scsddc)
class_marks = SectionMarks.objects.filter(
marks_type=marks_type, scsddc=scsddc).values()
marks_data = []
for student_marks in student_marks:
obj = {
"id": student_marks.id,
"marks_type": student_marks.marks_type,
"total_marks": student_marks.total_marks,
"weightage": student_marks.weightage,
"obtained_marks": student_marks.obtained_marks,
"obtained_weightage": student_marks.obtained_weightage,
"student_id": student_marks.student.uid,
"student_name": student_marks.student.user.first_name+" "+student_marks.student.user.last_name,
}
marks_data.append(obj)
data = {
"studentMarks": marks_data,
"MarksInfo": list(class_marks)
}
return JsonResponse(data, safe=False)
def change_marks_dist(request):
scsddc = request.POST['scsddc']
marks_type = request.POST['marks_type']
new_marks_type = request.POST['new_type']
old_weightage = request.POST['old_weightage']
new_weightage = request.POST['new_weightage']
old_marks = request.POST['old_marks']
new_marks = request.POST['new_marks']
if scsddc == "null" or scsddc == "" or marks_type == "null" or marks_type == "" or new_marks_type == "null" or new_marks_type == "" or old_weightage == "null" or new_weightage == "null" or old_marks == "null" or new_marks == "null" or old_weightage == "" or new_weightage == "" or old_marks == "" or new_marks == "":
return JsonResponse({"Status":"Failed","Message":" Invalid Input"},status=403)
else:
check = MarkSheet.objects.filter(
scsddc=scsddc)
if check[0].finalized:
return JsonResponse({"Status":"Failed","Message":"Unable To Update Marks. Transcript Has been Generated"},status=403)
try:
section_marks = SectionMarks.objects.get(scsddc=scsddc,marks_type= marks_type)
if section_marks.max_marks>float(new_marks):
return JsonResponse({"Status":"Failed","Message":"Total Marks Are Less Than Max Marks Of Class"},status=200)
except:
return JsonResponse({"Status":"Failed","Message":"Marks Does Not Exist"},status=404)
section_marks.total_marks = float(new_marks)
section_marks.weightage = float(new_weightage)
section_marks.marks_type = new_marks_type
all_marks = []
all_weightage = []
student_marks = StudentMarks.objects.filter(
marks_type=marks_type, scsddc=scsddc)
for marks in student_marks:
marksheet = MarkSheet.objects.get(scsddc=scsddc,student = marks.student)
marks.marks_type = new_marks_type
marks.total_marks = new_marks
old_weight = marks.obtained_weightage
old_total = marks.weightage
marks.weightage = new_weightage
marks.obtained_weightage = marks.obtained_marks/float(new_marks)*float(new_weightage)
all_weightage.append(marks.obtained_marks/float(new_marks)*float(new_weightage))
marksheet.grand_total_marks-=float(old_total)
marksheet.grand_total_marks+=float(new_weightage)
marksheet.obtained_marks-=old_weight
marksheet.obtained_marks+=marks.obtained_marks/float(new_marks)*float(new_weightage)
marks.save()
marksheet.save()
if len(all_marks) > 1:
section_marks.weightage_mean = statistics.mean(all_weightage)
section_marks.weightage_standard_deviation = statistics.stdev(
all_weightage)
else:
section_marks.weightage_mean = all_weightage[0]
section_marks.weightage_standard_deviation = 0
section_marks.save()
return JsonResponse({"Status":"Success","Message":"Evaluation Updated Successfully"})
######################################
def update_marks(request):
scsddc = request.POST['scsddc']
marks_type = request.POST['marks_type']
marks_data = json.loads(request.POST['marks_data'])
if marks_type == None or marks_type == "" or scsddc == None or scsddc == "" or marks_data == None or marks_data == "":
return JsonResponse({"Failed": "Invalid Input Parameters"}, status=403)
else:
try:
all_marks = []
all_weightage = []
for i in range(len(marks_data)):
student_marks = StudentMarks.objects.get(
marks_type=marks_type, scsddc=scsddc, pk=marks_data[i]['id'])
print(student_marks)
old_weightage = student_marks.obtained_weightage
student_marks.obtained_marks = marks_data[i]['obtained_marks']
if float(student_marks.obtained_marks) > student_marks.total_marks:
return JsonResponse({"Failed": "Invalid Marks"}, status=403)
student_marks.obtained_weightage = marks_data[i]['obtained_weightage']
all_marks.append(float(marks_data[i]['obtained_marks']))
all_weightage.append(
float(marks_data[i]['obtained_weightage']))
student_marks.save()
mark_sheet = MarkSheet.objects.get(student=Student.objects.get(
uid=marks_data[i]['student_id']), scsddc=scsddc)
mark_sheet.obtained_marks -= int(old_weightage)
mark_sheet.obtained_marks += int(
marks_data[i]['obtained_weightage'])
mark_sheet.save()
# print(old_weightage)
# print(marks_data[i]['obtained_weightage'])
# print(mark_sheet.obtained_marks)
student_marks = StudentMarks.objects.filter(
marks_type=marks_type, scsddc=scsddc).values()
class_marks = SectionMarks.objects.get(
marks_type=marks_type, scsddc=scsddc)
if len(all_marks) > 1:
class_marks.marks_mean = statistics.mean(all_marks)
class_marks.marks_standard_deviation = statistics.stdev(
all_marks)
class_marks.weightage_mean = statistics.mean(all_weightage)
class_marks.weightage_standard_deviation = statistics.stdev(
all_weightage)
class_marks.min_marks = min(all_marks)
class_marks.max_marks = max(all_marks)
else:
class_marks.marks_mean = all_marks[0]
class_marks.marks_standard_deviation = 0
class_marks.weightage_mean = all_weightage[0]
class_marks.weightage_standard_deviation = 0
class_marks.min_marks = all_marks[0]
class_marks.max_marks = all_marks[0]
class_marks.save()
class_marks = SectionMarks.objects.filter(
marks_type=marks_type, scsddc=scsddc).values()
print("Len")
print(len(class_marks))
data = {
"Status": "Success",
"studentMarks": list(student_marks),
"MarksInfo": list(class_marks)
}
return JsonResponse(data, safe=False)
except:
data = {
"Status": "Failed",
"studentMarks": list(student_marks),
"MarksInfo": list(class_marks)
}
return JsonResponse(data, safe=False)
class AssignedSections(BaseTeacherLoginView):
def get(self, request):
sections = CourseSection.objects.filter(
teacher__user__username=str(request.user)).all()
serial_sections = CourseSectionSerializer(sections, many=True, context={
'request': request}).data
print(serial_sections)
if sections is None or serial_sections is None:
return JsonResponse({'message': 'Teacher has no assigned courses.', 'condition': True, 'sections': serial_sections}, status=200)
else:
return JsonResponse({'message': 'Teacher has assigned courses.', 'condition': True, 'sections': serial_sections}, status=200)
class StartSectionAttendance(BaseTeacherLoginView):
def post(self, request):
req_scsddc = request.POST['scsddc']
slot = request.POST['slot']
section = request.POST['scsddc'].split('_')[0]
course_code = request.POST['course_code']
if(slot == '' or slot == 'null' or req_scsddc == '' or section == ''):
return JsonResponse({'message': 'Invalid Form Inputs', 'condition': False, }, status=422)
print(request.POST)
print(section)
current_semester = Semester.objects.filter(
current_semester=True).latest()
req_scsddc = f'{section}_{request.POST["course_code"]}_{current_semester.semester_code}'
print(req_scsddc)
try:
sec_att = SectionAttendance(
scsddc=req_scsddc, attendance_slot=slot, section=section)
sec_att.save()
g = attendance_of_day_for_student.send(
StartSectionAttendance, scsddc=req_scsddc, coursesection=section, sectionattendance=sec_att, option='create')
print(g)
except IntegrityError as e:
print(Fore.RED + str(e))
sec_att2 = SectionAttendance.objects.get(
scsddc=req_scsddc, attendance_slot=slot, section=section, class_date=sec_att.class_date)
data = SectionAttendanceSerializer(
sec_att2, context={'request': request}).data
return JsonResponse({'message': 'Attendance Already Open For This Class.', 'condition': True, 'qr_json': data}, status=200)
data = SectionAttendanceSerializer(
sec_att, context={'request': request}).data
if sec_att is None:
return JsonResponse({'message': 'Teacher has no assigned courses or Invalid scsddc.', 'condition': True, 'qr_json': data}, status=200)
else:
return JsonResponse({'message': 'Attendance QR.', 'condition': True, 'qr_json': data}, status=200)
class AddSectionMarks(BaseTeacherLoginView):
def post(self, request):
req_scsddc = request.POST['scsddc']
marks_type = request.POST['marks_type']
total_marks = request.POST['total_marks']
weightage = request.POST['weightage']
section = request.POST['section']
if(total_marks is None or total_marks=="" or total_marks=="null" or weightage is None or weightage == "" or weightage == "null" or req_scsddc == "null" ):
return JsonResponse({'message': 'Invalid Form Inputs', 'condition': False, }, status=200)
if(marks_type is None or marks_type=="" or marks_type=="null" or req_scsddc is None or req_scsddc is "" or section is None or req_scsddc == "null" ):
return JsonResponse({'message': 'Invalid Form Inputs', 'condition': False, }, status=200)
if(marks_type is None or section=="" or section=="null" or req_scsddc is None or req_scsddc == "" or section is None or req_scsddc == "null" ):
return JsonResponse({'message': 'Invalid Form Inputs', 'condition': False, }, status=200)
print(request.POST)
try:
st1 = MarkSheet.objects.filter(scsddc=req_scsddc)
print(len(st1))
if len(st1)> 0 and st1[0].grand_total_marks + float(weightage)>100.0:
return JsonResponse({"message": "Grand Total Can't be greater than 100"})
if len(st1)> 0:
print(st1[0].grand_total_marks+ float(weightage))
sec_marks = SectionMarks(scsddc=req_scsddc, marks_type=marks_type,
section=section, total_marks=total_marks, weightage=weightage)
sec_marks.save()
g = marks_for_student.send(
AddSectionMarks, scsddc=req_scsddc, coursesection=section, sectionmarks=sec_marks, option='create')
print(g)
except IntegrityError as e:
# data = SectionMarksSerializer(
# sec_att2, context={'request': request}).data
return JsonResponse({'message': 'Marks Already Added For This Class.'}, status=200)
if sec_marks is None:
return JsonResponse({'message': 'Teacher has no assigned courses or Invalid scsddc.', 'condition': True, }, status=200)
else:
return JsonResponse({'message': 'Marks Open For This Section.', 'condition': True}, status=200)
@receiver(marks_for_student)
def generate_marks_for_student(**kwargs):
semester = Semester.objects.get(current_semester=True)
year = semester.semester_year
season = semester.semester_season
if kwargs['option'] == 'create':
print('Received Signal For Creation Marks for student')
SCSDDC_temp = str(kwargs['scsddc'])
section_marks = kwargs['sectionmarks']
section = kwargs['coursesection']
scsddc_dict = split_scsddc(SCSDDC_temp)
csection = CourseSection.objects.get(
section_name=scsddc_dict['section'], course_code=scsddc_dict['course_code'], semester_code="_".join(SCSDDC_temp.split('_')[2:]))
for student_info in csection.student_info.all():
new_a = StudentMarks(marks_type=section_marks.marks_type, total_marks=section_marks.total_marks, scsddc=section_marks.scsddc,
student=student_info.student, weightage=section_marks.weightage, section=section_marks.section)
new_a.save()
info = csection.student_info.get(student=student_info.student)
info.mark_sheet.Marks.add(new_a)
if info.mark_sheet.grand_total_marks == None:
info.mark_sheet.grand_total_marks = 0.0
info.mark_sheet.grand_total_marks += float(section_marks.weightage)
info.mark_sheet.year = year
info.mark_sheet.semester_season = season
info.mark_sheet.save()
return 'Success'
class Home_json(BaseTeacherLoginView):
def get(self, request):
print(dir(request))
data_dict = model_to_dict(Teacher.objects.filter(
user__username=request.user).first())
user_data = model_to_dict(request.user)
user_data.pop('groups', None)
user_data.pop('password', None)
print(data_dict)
print(user_data)
dat = {'status': 'success', **data_dict, **user_data}
return JsonResponse(dat)
class TeacherLoginView(APIView):
def get(self, request, *args, **kwargs):
return HttpResponse("PLease Login" + str(kwargs))
parser_classes = [MultiPartParser]
@swagger_auto_schema(request_body=LoginSerializer, responses={200: UserSerializer(many=True)})
def post(self, request, *args, **kwargs):
username = request.POST['username']
password = request.POST['password']
if username == "" or password == "":
return Response(data="Empty Usename or Password Field.", status=400)
user = authenticate(request, username=username, password=password)
if user is None:
return Response({'status': "Invalid Username of Password."}, status=403)
print(user)
if user is not None and user.is_teacher:
login(request, user)
dict_user = model_to_dict(user)
dict_user.pop('groups', None)
dict_user.pop('password', None)
return Response({'status': 'success', 'message': 'User Logged In', **dict_user})
else:
if not user.is_teacher:
return Response({'status': "User not a Teacher. Contact Admin"}, status=401)
return Response({'status': "Invalid Username of Password."}, status=403)
return HttpResponseRedirect('/home')
class TeacherLogoutView(View):
def post(self, request):
logout(request)
return JsonResponse({'status': 'success', 'message': 'User Logged Out'})
@receiver(attendance_of_day_for_student)
def generate_attendance_for_student(**kwargs):
if kwargs['option'] == 'create':
print('Received Signal For Creation Attendance of Day for student')
SCSDDC_temp = str(kwargs['scsddc'])
section_attendance = kwargs['sectionattendance']
section = kwargs['coursesection']
scsddc_dict = split_scsddc(SCSDDC_temp)
print(Fore.RED + scsddc_dict['section'])
print(scsddc_dict['course_code'])
print("_".join(SCSDDC_temp.split('_')[2:]))
csection = CourseSection.objects.get(
section_name=scsddc_dict['section'], course_code=scsddc_dict['course_code'], semester_code="_".join(SCSDDC_temp.split('_')[2:]))
for student_info in csection.student_info.all():
new_a = StudentAttendance(attendance_type='M', state='A', scsddc=section_attendance.scsddc, student=student_info.student, class_date=section_attendance.class_date,
attendance_slot=section_attendance.attendance_slot, duration_hour=section_attendance.duration_hour, section=section_attendance.section)
new_a.save()
info = csection.student_info.get(student=student_info.student)
info.attendance_sheet.attendance.add(new_a)
print(new_a)
return 'Success'
def marks_info(request):
scsddc = request.POST['scsddc']
print(scsddc)
if scsddc == None or scsddc == "" or scsddc == "null":
return JsonResponse({"Failed": "Invalid Input Parameters"}, status=403)
print(scsddc)
marks = SectionMarks.objects.filter(scsddc=scsddc).values()
return JsonResponse(list(marks), safe=False)
def generate_grades(request):
grades = {
1: "A+",
2: "A",
3: "A-",
4: "B+",
5: "B",
6: "B-",
7: "C+",
8: "C",
9: "C-",
10: "D+",
11: "D",
12: "F",
}
gpas = {
1: 4.00,
2: 4.00,
3: 3.67,
4: 3.33,
5: 3.00,
6: 2.67,
7: 2.33,
8: 2.00,
9: 1.67,
10: 1.33,
11: 1.00,
12: 0.00
}
#grading_type = request.POST['Type']
scheme = 0
scsddc = request.POST['scsddc']
if scsddc == None or scsddc == "" or scsddc == "null":
return JsonResponse({"Error": "Invalid scsddc"}, status=403)
csection = CourseSection.objects.get(scsddc=scsddc)
for student_info in csection.student_info.all():
info = csection.student_info.get(student=student_info.student)
weight = info.mark_sheet.obtained_marks
old_gpa = info.mark_sheet.gpa
if(weight >= 90):
info.mark_sheet.grade = grades[1-scheme]
info.mark_sheet.gpa = gpas[1-scheme]
elif(weight < 90 and weight > 85):
info.mark_sheet.grade = grades[2-scheme]
info.mark_sheet.gpa = gpas[2-scheme]
elif(weight < 86 and weight > 81):
info.mark_sheet.grade = grades[3-scheme]
info.mark_sheet.gpa = gpas[3-scheme]
elif(weight < 82 and weight > 77):
info.mark_sheet.grade = grades[4-scheme]
info.mark_sheet.gpa = gpas[4-scheme]
elif(weight < 78 and weight > 73):
info.mark_sheet.grade = grades[5-scheme]
info.mark_sheet.gpa = gpas[5-scheme]
elif(weight < 74 and weight > 69):
info.mark_sheet.grade = grades[6-scheme]
info.mark_sheet.gpa = gpas[6-scheme]
elif(weight < 70 and weight > 65):
info.mark_sheet.grade = grades[7-scheme]
info.mark_sheet.gpa = gpas[7-scheme]
elif(weight < 66 and weight > 61):
info.mark_sheet.grade = grades[8-scheme]
info.mark_sheet.gpa = gpas[8-scheme]
elif(weight < 62 and weight > 57):
info.mark_sheet.grade = grades[9-scheme]
info.mark_sheet.gpa = gpas[9-scheme]
elif(weight < 58 and weight > 53):
info.mark_sheet.grade = grades[10-scheme]
info.mark_sheet.gpa = gpas[10-scheme]
elif(weight < 54 and weight > 49):
info.mark_sheet.grade = grades[11-scheme]
info.mark_sheet.gpa = gpas[11-scheme]
else:
info.mark_sheet.grade = grades[12-scheme]
info.mark_sheet.gpa = gpas[12-scheme]
print(str(info.mark_sheet.grade)+" "+str(info.mark_sheet.gpa)+" "+str(weight))
final_status = info.mark_sheet.finalized
info.mark_sheet.finalized = True
info.mark_sheet.save()
current_sem = Semester.objects.get(current_semester=True)
transcript = Transcript.objects.get(
student=student_info.student, semester=current_sem)
sum = 0
count = 0
last_course_being_final = True
results = transcript.course_result.all()
total_cr = 0
for sheet in results:
if last_course_being_final and sheet.finalized == False:
last_course_being_final = False
sum += sheet.gpa*sheet.course.credit_hour
count += 1
total_cr += sheet.course.credit_hour
print(last_course_being_final)
sgpa = sum/(total_cr)
transcript.sgpa = sgpa
if final_status is False:
if weight > 49:
transcript.credit_hours_earned += info.mark_sheet.course.credit_hour
transcript.credit_hours_attempted += info.mark_sheet.course.credit_hour
elif old_gpa == 0 and weight > 49 :
transcript.credit_hours_earned += info.mark_sheet.course.credit_hour
elif weight < 50:
transcript.credit_hours_earned -= info.mark_sheet.course.credit_hour
transcript.save()
all_transcript = Transcript.objects.filter(
student=student_info.student)
print(all_transcript)
sum = 0
count = 0
for tr in all_transcript:
if last_course_being_final:
tr.last = False
sum += tr.sgpa
count += 1
transcript.cgpa = sum/count
if last_course_being_final:
transcript.last = True
transcript.save()
return JsonResponse("Success", safe=False)