在使用geddy保存數據前處理數據

Question

我的應用程序中有一些場景需要在保存數據之前處理數據。

我有一個CakePHP背景，所以我通常會在Model的beforeSave方法中執行此操作。

有什麼等價物，我可以在我的模型中做geddy？

Answer 1

查看Model events。

Both the base model 'constructors,' and model instances are EventEmitters. The emit events during the create/update/remove lifecycle of model instances. In all cases, the plain-named event is fired after the event in question, and the 'before'-prefixed event, of course happens before.

The 'constructor' for a model emits the following events:

• beforeCreate
• create
• beforeValidate
• validate
• beforeUpdateProperties
• updateProperties
• beforeSave (new instances, single and bulk)
• save (new instances, single and bulk)
• beforeUpdate (existing single instances, bulk updates)
• update (existing single instances, bulk updates)
• beforeRemove remove

例如：

var MyModel = function() { ... }; 

MyModel = geddy.model.register('MyModel', MyModel); 

MyModel.on('beforeSave', function(data){ 
    console.log(data); 
})