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【Ruby】ハッシュの中のハッシュの値を取り出す方法

Posted at

下記のようなハッシュがあった際、punch_inの中のdateの値を取り出したい

hash = { 
Fri, 01 Jan 2021=>
  {:punch_in=>
     id: 2314,
     date: Fri, 01 Jan 2021,
   :punch_out=>
     id: 2315,
     date: Fri, 01 Jan 2021,
   }
}

##やり方

  1. ハッシュからvaluesだけを取り出し配列の形にする
arr = hash.values

#=>
[{:punch_in=>
    id: 2314,
    date: Fri, 01 Jan 2021,
  :punch_out=>
    id: 2315,
    date: Fri, 01 Jan 2021
 }]
  1. 配列から取り出す
puts arr[0][:punch_in][:date]

#=> Fri, 01 Jan 2021

##参考

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