如何检查实例更新是否已保存？

Question

在 nodes 14.x 中使用 sqeuelizejs 6.5，对于模型实例，有没有办法检查实例是否已经 saved/updated（类似于 model.saved() in ruby ORM）？这是一个代码示例：

let art = await Artwork.findByPk(req.body.id);  //art is an instance of Artwork model
if (!art) return false;

//do some update with instance art, such as : 
//art.name = "a new name";
//art.description = "a new description";
//await art.save();

//.....some code here

if (art.saved()) {. //<<==is there art.saved()/art.updated() to check if the instance update has been saved?
  //do something
} else {
  //if art not updated, do something else
}

Answer 1

if(art.changed()) { // need save
} else {
  // no updated
}

如何检查实例更新是否已保存？

How to check if an instance update has been saved?

sequelize.js