Rails:如何从JSON提取值 [英] Rails: How to extract values from JSON

问题描述

一个非常简单的问题(我是初学者).我有一个来自fb的JSON响应，其中包含名称和ID:

Very simple question (I am beginner). I have a JSON response from fb containing names and ids:

[{"name"=>"John Kline", "id"=>"10276192"}, {"name"=>"Quinn Kumbers",   
 "id"=>"18093781"}, {"name"=>"Dan Jacobs", "id"=>"100000918716828"}] ...

如何在我的rails应用程序中提取并访问此数据，同时保留其结构?我想告诉Rails-给我第二个条目的ID"，或者给我第275个条目"-这些东西.

How do I extract and access this data in my rails app while preserving its structure? I'd like to be able to tell rails - "give me the id of the 2nd entry", or, "give me the 275th entry" - these sorts of things.

回答时，请假设自己不知道.谢谢！

Please assume no knowledge when answering. thx!

推荐答案

，不包含其他任何宝石:

without any other gems:

ActiveSupport::JSON.decode(your_json)

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