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ruby date format変換 YYYY-MM-DD => YYYY年MM月

Ruby

Last updated at 2016-12-10Posted at 2016-12-10

きっと２度と見返さないメモ

YYYY-MM-DD => YYYY年MM月

[]:~/ irb
irb(main):001:0> require 'date'
=> true
irb(main):002:0> d = '2016-12-10'
=> "2016-12-10"
irb(main):003:0> x = DateTime.parse(d)
=> #<DateTime: 2016-12-10T00:00:00+00:00 ((2457733j,0s,0n),+0s,2299161j)>
irb(main):004:0> str = x.strftime("%Y年%m月")
=> "2016年12月"
irb(main):005:0>

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