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在model定义中添加如下示例代码

from django.db.models.signals import pre_save,post_savefrom django.dispatch import receiver

@receiver(pre_save, sender=Student)def pre_save_student(sender, **kwargs):    print('-------pre_save_student---------', kwargs)@receiver(post_save, sender=Student)def post_save_student(sender, **kwargs):    print('id=', kwargs['instance'].id)    print('-------post_save_student---------', kwargs)

也可以写在APPConfig里面：

from django.apps import AppConfigfrom django.db.models.signals import pre_savedef pre_save_student(sender, **kwargs):    print('-------+++++++++++++pre_save_student---------', kwargs)class MyappConfig(AppConfig):    name='app'    verbose_name = u'我的应用'    def ready(self):        MyModel = self.get_model('Student')        pre_save.connect(pre_save_student, sender='app.Student')

参考文档：

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