模型内的主干集合

Question

我是骨干新手，我想知道是否有办法将以前的模型保存在集合中作为模型本身的属性。例如，

var history = Backbone.Collection.extend({});

var myModel = Backbone.Model.extend({
  defaults: {
         id: '',
         name: '',
         history: history //history is a collection of myModel
          },

  //override setter so when set method is called, it will save the previous model inside history collection.

})

Answer 1

这将是短暂的历史

var myModel = Backbone.Model.extend({    
    defaults:{
        id:''
    },
    constructor: function(){
       this.history = new Backbone.Collection();
    },

    set: function(){
      var args = Array.prototype.slice.call(arguments);
      this.history.add(this.toJSON());
      return Backbone.Model.prototype.set.apply(this, args);
    }
});