将模型添加到 Marionette CollectionView 的集合不会触发 onItemAdd 回调

Question

所以，我不确定我是否完全理解应该如何触发此回调。如果您采用准系统模型、集合和视图：

PatchModel = Backbone.Model.extend({});

PatchCollection = Backbone.Collection.extend({model: PatchModel});

PatchView = Backbone.Marionette.ItemView.extend({template:'#patchview'});

PatchCollectionView = Backbone.Marionette.CollectionView.extend({
  itemView:PatchView
  ,onItemAdded: function(itemView){
    console.log("item was added");
  }
});

然后像这样实例化它们：

Patch0 = new PatchModel({});
Patch1 = new PatchModel({});
Patches = new PatchCollection();        

PatchesView = new PatchCollectionView({collection:Patches,el:"dom_id"});    

Patches.add(Patch0);
PatchesView.render();
Patches.add(Patch1);

PatchesView onItemAdded 回调永远不会触发。嗯……

Answer 1

文档似乎已过时。您应该使用 onAfterItemAdded 或 onBeforeItemAdded

这在 v1.0.0-rc2 中已更改

*中断：* 将 item:added 事件更改为 before:item:added 和 after:item:added

Link

这是对您的示例进行了修改的小提琴。 http://jsfiddle.net/puleos/axJg4/

var PatchCollectionView = Backbone.Marionette.CollectionView.extend({
    itemView: PatchView,
    initialize: function() {
        _.bindAll(this);  
    },
    onAfterItemAdded: function(itemView){
        console.log("item was added");
    },
    onRender: function(){
        console.log("render");   
    }
});