Нужна помощь Реализация подсчета, получение оценки от пользователя, увеличение подсчета, затем нахождение средней реализации Django Python

CrystalPrototype_Django_WebsiteV1/prototype/HomeScreen/admin.py

from django.contrib import admin
from .models import *
# Register your models here.
admin.site.register(Profile)
admin.site.register(Element)
admin.site.register(Edit)
admin.site.register(TOS)

"""
    This function allows for deletion of elementTexts and will update the auto
    ranking score after deletion. 
"""
@admin.action(description = 'Delete elements for one TOS and reset weight')
def deleteElementText(modeladmin, request, queryset):
    allElement = Element.objects.all()
    # allText = ElementText.objects.filter(tos = instance) 
    # filter to get all elements in tos
    tosElements =  allElement.filter(tos = queryset[0].tos)
    queryElements = queryset.values_list('element', flat = True)
    excluded = tosElements.exclude(id__in = queryElements)
    weights = excluded.values_list('weight', flat = True)
    # get absolute weight
        
    absTotal = sum(abs(w) for w in weights) 
    regTotal = sum(weights)
    # get total
    total = absTotal + regTotal 
    # set rating
    TOS.objects.filter(pk=queryset[0].tos.pk).update(weightRating = round((total / absTotal) * 100))
    queryset.delete()

class ElementTextAdmin(admin.ModelAdmin):
    actions = [deleteElementText]

admin.site.register(ElementText, ElementTextAdmin)

CrystalPrototype_Django_WebsiteV1/prototype/HomeScreen/models.py