backbone.js - 将模型添加到集合时不触发添加事件

Question

当我通过集合方法add或push向集合添加新模型时，有没有办法不触发add事件 示例:

collection.add({name: 'any name'})

我尝试过给予

collection.add({name: 'xyz'}, {add: false})

但它不起作用

Answer 1

@idbehold 完美地回答了这个问题。您可以在选项中传递 {silent: true} 来抑制 add 事件。我只想添加文档中的一些信息。阅读其中内容

Generally speaking, when calling a function that emits an event (model.set, collection.add, and so on...), if you'd like to prevent the event from being triggered, you may pass {silent: true} as an option.

Note that this is rarely, perhaps even never, a good idea.

Passing through a specific flag in the options for your event callback to look at, and choose to ignore, will usually work out better.

因此，请考虑在选项中传递一个附加标志，并在事件监听器中检查该标志以忽略您不需要的内容。

检查这个Jsbin Example

var M = Backbone.Model.extend({ defaults: { a: 5 } });
var C = Backbone.Collection.extend({ model: M });

var c = new C();
var m = new M({a:1});

c.on('add', function(model, collection, options) { 
  console.log(options); 
  if (!options.flag) { return; }
});

c.add(m, {flag: false});