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Ruby(ActiveSupport)で、今月中といった範囲を一瞬で作成する方法

Last updated at Posted at 2015-04-08

今月作成された記事を検索する場合、今までは

time = Time.now
this_month = time.beginning_of_month..time.end_of_month
Article.where(created_at: this_month)

といった感じに書いていましたが、all_monthメソッドを使うと簡単に書けるようになるようです。

Article.where(created_at: Time.now.all_month)

すっきり!

他にもall_dayall_weekall_yearがあります。

Time.new(2015, 4, 6).all_day
=> 2015-04-06 00:00:00 +0900..2015-04-06 23:59:59 +0900

Time.new(2015, 4, 6).all_week
=> 2014-03-31 00:00:00 +0900..2015-04-06 23:59:59 +0900

Time.new(2015, 4, 6).all_month
=> 2015-04-01 00:00:00 +0900..2015-04-30 23:59:59 +0900

Time.new(2015, 4, 6).all_year
=> 2015-01-01 00:00:00 +0900..2015-12-31 23:59:59 +0900
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