小编Can*_*and的帖子

Backbone没有使用为集合指定的模型.我肯定错过了什么.

App.Models.Folder = Backbone.Model.extend({
  initialize: function() {
    _.extend(this, Backbone.Events);

    this.url = "/folders";
    this.items = new App.Collections.FolderItems();
    this.items.url = '/folders/' + this.id + '/items';
  },

  get_item: function(id) {
    return this.items.get(id);
  }
});

App.Collections.FolderItems = Backbone.Collection.extend({
  model: App.Models.FolderItem
});

App.Models.FolderItem = Backbone.Model.extend({
  initialize: function() {
    console.log("FOLDER ITEM INIT");
  }
});


var folder = new App.Models.Folder({id:id})
folder.fetch();

// later on change event in a view
folder.items.fetch();

加载文件夹,然后加载项目,但它们不是FolderItem对象,永远不会调用FOLDER ITEM INIT.它们是基本的Model对象.

我错过了什么？我应该这样做吗？

编辑: 不知道为什么这对文档有效,但以下工作.骨干5.3

App.Collections.FolderItems = Backbone.Collection.extend({
  model: function(attributes) {
    return new App.Models.FolderItem(attributes);
  } 
});