搜索集合和检索模型backbonejs [英] Search collection and retrieve model backbonejs

问题描述

我试图寻找一个集合的模型属性，然后抓住并返回整个模式？

I am trying to search a collection for a model attribute and then grab and return the entire model ?

var myModel = Backbone.Model.extend({
  defaults: {
      a: '',
      b: '',
      c: '',
      d: '',
      e: ''
  }
});

我收藏有大约myModels 100。

My collection has around 100 of myModels.

我想通过通过收集来搜索，找到它，然后返回的整个基于myModel A 这样我就可以访问其他属性？

I am trying to search through the collection by a, find it and then return the entire myModel of a so I can access the other attributes ?

推荐答案

如果我正确地理解你的问题，你要使用的骨干集合在其中，方法，在这里文档：

If I understand your question correctly, you want to use the where method on Backbone collections, here in the docs:

http://backbonejs.org/#Collection-where

因此​​，考虑到MyCollection的名为MyCollection的实例有MyModels在里面，你可以说：

So, given an instance of MyCollection called myCollection that has MyModels in it, you can say:

var foundModels = myCollection.where({a:'some value'});

和 foundModels 将包含你所寻求的车型阵列

and foundModels will contain an array of the models you seek

顺便说一句，如果你正在做一个更复杂的搜索，使用过滤器方法来代替，传递函数返回所需的匹配真正的第一个参数：

BTW, if you are doing a more complex search, use the filter method instead, passing a function as the first argument that returns true on the desired match:

var modelsWhoseAStartsWithA = myCollection.filter(function(anyModel) {
    var startsWithA = new RegExp(/^[aA]/);
    return startsWithA.test(anyModel.get('a'));
});

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