django 保存数据时重写？

Question

classArticle(Model.model):
title=''
title_hash=hash(title)
保存title时自动生成title_hash

Answer 1

在model重写save方法大概是这样：defsave(self,*args,**kwargs):self.title_hash=hash(self.title)super(Article,self).save(*args,**kwargs)

Answer 2

defsave_title_hash(self):title_hash=hash(title)returntitle_hashtitle_hash=property(save_title_hash)