将多维json数组中的一组属性列入白名单，然后删除其余属性 [英] Whitelist a set of properties from a multidimensional json array and delete the rest

问题描述

举例来说，我将使用github api响应作为我的数据输入.

For examples sake i'll use a github api response as my data input.

https://api.github.com/users/unsalted/repos

我有一个要保留的属性列表，其余的我想舍弃，因为我想保持我生成的输出更加紧凑.

I have a list of properties I want to keep, the rest I want to discard because I want to keep the output i'm generating considerably more compact.

不这样做，我怎么能实现自己的目标:

How can I achieve my goal without doing this:

      for (var i = tagged.length - 1; i >= 0; i--) {
          delete tagged[i].private;
          delete tagged[i].owner.gravatar_id;
          delete tagged[i].owner.url;
          delete tagged[i].owner.followers_url;
          delete tagged[i].owners.following_url;
          delete tagged[i].gravatar_id;
          delete tagged[i].private;
          delete tagged[i].private;
          delete tagged[i].private;
          delete tagged[i].private;
          delete tagged[i].private;
          delete tagged[i].private;
          delete tagged[i].private;
          delete tagged[i].private;
          delete tagged[i].private;
          delete tagged[i].private;
          delete tagged[i].private;
          delete tagged[i].private;
          delete tagged[i].private;
          delete tagged[i].private;
          delete tagged[i].private;
          delete tagged[i].private;
          delete tagged[i].private;
          delete tagged[i].private;

      };

我在项目中使用lodash，因此不欢迎使用lodash解决方案.

I am using lodash in the project so lodash solutions are more than welcome.

有时候，我没有填写其余的值，但您明白了...

For times sake I didn't fill out the rest of the values but you get the idea...

推荐答案

对于给定的对象，可以使用_.pick保留仅指定的属性；然后您可以将其映射到您的收藏中.因此，您最终得到:

For a given object, you can use _.pick to keep only properties that you specify; and then you can map that over your collection. So, you end up with:

tagged = _.map(tagged, function (t) {
    return _.pick(t, ['properties', 'to', 'keep']);
});

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