对收集的模型射击骨干事件（二次烧成） [英] Backbone events on model firing on collection (Double firing)

问题描述

我正在开发一个骨干应用程序有一个集合和一个模型，并为每个项目的相关意见。

A Backbone app which I'm developing has a collection and a model, and associated views for each item.

https://gist.github.com/2255959

当我点击后览，不料，在集合的事件触发不受任何线路。

When I click on the PostView, unexpectedly, the event fires on the collection without any wiring.

我想我需要一个事件绑定到模型，然后让那场大火对收集的事件。是不是这样的？并集合自动地继承事件发射它的子模式？

I figured I'd need to bind an event to the model, then have that fire an event on the collection. Is that not the case? Does a collection automagically inherit events fired its child models?

我不确定，但是我认为它是与嵌套的意见，也许事件被两个地方，而不仅仅是内部报约束

I'm uncertain, but I think it has something to do with the nested views, and maybe the event is being bound on both places instead of just the inner el.

推荐答案

从精细的手工：

这是触发集合中的一个模型中的任何事件也将被收集直接触发，方便。

Any event that is triggered on a model in a collection will also be triggered on the collection directly, for convenience.

所以，是的，集监听事件对旗下所有车型，并转发。

So yes, the collection listens to events on all of its models and forwards them.

例如，给出一个简单的设置是这样的：

For example, given a simple set up like this:

class M extends Backbone.Model

class C extends Backbone.Collection
    model: M

c = new C
c.on('change', (model, opts) -> console.log('Change on collection'))

做 c.first（）。集（...）将触发事件处理程序。

演示： http://jsfiddle.net/ambiguous/wwjnK/

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