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Rails: Date / Time / DateTime differences. And how to get a string for
Date type (= day of week + date)
Example: Tue, 20 Oct 2015
Date.today # => Tue, 20 Oct 201
Time type (= date + time)
Example: 2015-10-20 19:22:41 +0900
Time.now # => 2015-10-20 19:22:41 +0900
DateTime type (= day of week + date + time)
Example: Tue, 20 Oct 2015 19:22:43 +0900
DateTime.now # => Tue, 20 Oct 2015 19:22:43 +0900
String type
For example.
- 2015-10-20
- 2015-10-20 19:22:43
こ う い う These are just strings, not types that represent time.
To get such a string, to_s to_s(:db) to_s / to_s(:db) on the Date / Time / DateTime result.
Get date
Date.today.to_s
=> "2015-10-20"
Get the date and time
Time.now.to_s(:db)
=> "2015-10-20 19:22:43"
DateTime.now.to_s(:db)
=> "2015-10-20 19:22:43"
- Note that raw ruby does not have the to_s (: db) option.
Original by
Rails: Date / Time / DateTime 型の違い。そしてSQL用の文字列を得る方法。
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公開日時
2019-04-16
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