Django信号如何正确地连接发送者和接收者

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

from django.db import models

class MyModel(models.Model):
    name = models.CharField(max_length=100)
    # 其他字段...

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

@receiver(post_save, sender=MyModel)
def my_receiver(sender, instance, created, **kwargs):
    if created:
        # 处理逻辑...

from django.apps import AppConfig

class MyAppConfig(AppConfig):
    default_auto_field = 'django.db.models.BigAutoField'
    name = 'myapp'

    def ready(self):
        import myapp.signals  # 信号文件的导入

default_app_config = 'myapp.MyAppConfig'

INSTALLED_APPS = [
    # 其他应用...
    'myapp',
]