如何在Django中为新创建的用户创建唯一id

from django.contrib.auth.models import User
import uuid

from django.db.models.signals import post_save
from django.dispatch import receiver

@receiver(post_save, sender=User)
def create_unique_id(sender, instance, created, **kwargs):
    if created:
        instance.unique_id = uuid.uuid4().hex
        instance.save()

# settings.py

INSTALLED_APPS = [
    ...
    'your_app_name',
]

python manage.py makemigrations
python manage.py migrate