new users must be allowed by admin django code example

Example 1: how to set default user group in django

from django.contrib.auth.models import User, Group
from django.db.models.signals import post_save
from django.dispatch import receiver

@receiver(post_save, sender=User)
def create_user_profile(sender, instance, created, **kwargs):
    if created:
        instance.groups.add(Group.objects.get(name='group_name'))

Example 2: staff user is not restricting permission in django

class UserAdmin(BaseUserAdmin):
    ...
    def has_add_permission(self, request, obj=None):
        return request.user.is_superuser

    def has_delete_permission(self, request, obj=None):
        return request.user.is_superuser