如何在django中从signal中获取父模型对象

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

@receiver(post_save, sender=ParentModel)
def my_signal_receiver(sender, instance, **kwargs):
    # 在这里可以访问到父模型对象instance
    # 进行你想要的操作
    pass

from django.apps import AppConfig

class YourAppConfig(AppConfig):
    default_auto_field = 'django.db.models.BigAutoField'
    name = 'your_app_name'

    def ready(self):
        import your_app_name.signals