首先在 app 目录下新建 signals.py 文件，写入类似于以下的内容
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| from django.dispatch import receiver
from [models] import [XXModel]
from [signals] import [XXSignal]
@receiver([XXSignal], sender=[XXSignal], dispatch_uid='some string')
def parse_signal(sender, **kwargs):
# do something
pass
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其中，[XXModel] 为发送信号的实例（不一定是 model、不一定必须设置）；[XXSignal] 是信号
设置完后，在相应应用的 apps.py 文件中注册此 receiver 即可
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| from django.apps import AppConfig
class XXXConfig(AppConfig):
name = 'xxx'
verbose_name = 'XXX'
def ready(self):
super().ready()
from . import signals
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附：当 User 创建时自动创建 UserInfo
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| from django.db.models.signals import post_save
from django.dispatch import receiver
from .models import User, UserInfo
@receiver(post_save, sender=User, dispatch_uid='user_post_save')
def user_save(sender, instance, created, **kwargs):
if created:
ui = UserInfo(user=instance)
ui.save()
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