add user type to groups

# models.py.

from django.db import models
from django.contrib.auth.models import AbstractUser, Group, Permission
from django.contrib.contenttypes.models import ContentType

# Create your models here.

class CustomUser(AbstractUser):
    is_admin = models.BooleanField(default=False)
    is_insurer = models.BooleanField(default=False)

    def __str__(self):
        return self.username


#management/commands/add_groups.py

from django.contrib.auth.models import AbstractUser, Group, Permission
from django.contrib.contenttypes.models import ContentType
from django.core.management.base import BaseCommand
from customuser.models import CustomUser

class Command(BaseCommand):
    help = 'Adding RBAC to the system..'
    def handle(self, *args, **options):

        is_insurer = CustomUser.objects.filter(is_insurer=True)
        is_admin = CustomUser.objects.filter(is_admin=True)


        admin_group , created = Group.objects.get_or_create(name='admin_group')
        insurer_group, created = Group.objects.get_or_create(name='insurer_group')


        ct = ContentType.objects.get_for_model(CustomUser)

        permission = Permission.objects.create(codename='can_view_user', name='Can view user', content_type=ct)

        insurer_group.permissions.add(permission)

        get_custom_user_permissions = ContentType.objects.get_for_model(CustomUser)
        all_custom_user_permissions = Permission.objects.filter(content_type=get_custom_user_permissions)

        admin_group.permissions.add(*all_custom_user_permissions)

        if is_admin == True: # <==================================== HERE
            admin_group = Group.objects.get(name='admin_group')
            admin_group.user_set.add(self.is_admin)