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Railsで月単位で値を抽出する

Last updated at Posted at 2014-11-20

Railsで月単位で値を抽出したい時は、 ActiveSupportのTime拡張を使えば簡単にできますby_starを使いましょう!

ActiveSupportのTime拡張でやった場合、MySQLの「BETWEEN2014/11/1 AND 2014/11/21」なら 21未満の値をとります。よって、以下コード最終日が取れないので間違っていました!

こんな感じでやると、年と月指定ができました\(^o^)/

Model.by_year(Time.zone.year, field: :created_at)by_month(Time.zone.month, field: :created_at)

by_starすごい!簡単!便利!

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