擅长:python、mysql、java
<p>您可以使用django信号。pre_save:</p>
<pre><code>from django.db.models.signals import post_save, post_delete, pre_save
class TodoList(models.Model):
@staticmethod
def pre_save(sender, instance, **kwargs):
#do anything you want
pre_save.connect(TodoList.pre_save, TodoList, dispatch_uid="sightera.yourpackage.models.TodoList")
</code></pre>