主干添加事件 [英] Backbone add event

问题描述

我有一个集合，其中有是在添加模型是被解雇的事件。我在阅读文档，它应该有一个选项参数，但没能得到它。
我基本上是想找到该指数模型的收藏。
里面我的收藏我有这个。

 初始化：功能（）{
        this.bind（添加，this.onModelAddedd，这一点）;
    }，    onModelAddedd：功能（模型，期权）{           的console.log（选项=选项）;
    }
 

解决方案

该文档是对这个有点不清楚所以你的困惑是可以理解的。从精细的手工：

  

活动的目录

  
  

下面是所有内置的事件Backbone.js的能火的列表。你也可以自由地触发模型和视图自己的事件，你认为合适。

  
  

  
• 添加（模型，收藏，选项） - 当一个模型被添加到集合

  
• ...

  

所以，第二个参数添加的处理程序是集合本身。无处不在选项您正在寻找的总是最后一个参数，所以你想这样的：

  onModelAddedd：功能（模型，收集，期权）{
    的console.log（选项=选项）;
}
 

示范（打开控制台请）： http://jsfiddle.net/ambiguous/Das2t/

最后选项参数暗示是整个文档的最后一个参数，但它没有明确列明的任何地方。

I have a collection where is has an event that gets fired when a model is added. I have read in the docs where it should have an options parameter but not able to get to it. I basically want to find the index the model is at in the collection. Inside my collection I have this.

    initialize: function( ) {
        this.bind( 'add', this.onModelAddedd, this );
    },

    onModelAddedd: function( model, options ){

           console.log("options = ", options);
    }

解决方案

The documentation is a little unclear on this so your confusion is understandable. From the fine manual:

Catalog of Events

Here's a list of all of the built-in events that Backbone.js can fire. You're also free to trigger your own events on Models and Views as you see fit.

• "add" (model, collection, options) — when a model is added to a collection.
• ...

So the second argument to the add handler is the collection itself. The ubiquitous options that you're looking for is always the last argument so you want this:

onModelAddedd: function(model, collection, options) {
    console.log("options = ", options);
}

Demo (open your console please): http://jsfiddle.net/ambiguous/Das2t/

The final options argument is implied to be the last argument throughout the documentation but it isn't explicitly spelled out anywhere.

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