datetime rails

Ruby语言在实际应用中可以帮助我们轻松的完成许多功能需求。其内置的大量方法是我们实现功能的前提。下面我们为大家介绍其中Ruby时间方法的相关方法。

• Ruby代码管理经验分享
• Ruby创建构造器技巧分享
• Ruby异常处理结构特点介绍
• Ruby数学表达式中各种应用解析
• 几种常见Ruby on Rails内置方法介绍

Ruby时间方法：

puts 20.seconds #=> 20
puts 20.minutes #=> 1200
puts 20.hours #=> 72000
puts 20.days #=> 1728000
puts 20.weeks #=> 12096000
puts 20.fortnights #=> 24192000
puts 20.months #=> 51840000
puts 20.years #=> 630720000

 

puts Time.now #=> Thu May 18 23:29:14 CDT 2006
puts 20.minutes.ago #=> Thu May 18 23:09:14 CDT 2006
puts 20.hours.from_now #=> Fri May 19 19:29:14 CDT 2006
puts 20.weeks.from_now #=> Thu Oct 05 23:29:14 CDT 2006
puts 20.months.ago #=> Sat Sep 25 23:29:16 CDT 2004
puts 20.minutes.until("2006-12-25 12:00:00".to_time)
#=> Mon Dec 25 11:40:00 UTC 2006
puts 20.minutes.since("2006-12-25 12:00:00".to_time)
#=> Mon Dec 25 12:20:00 UTC 2006

now = Time.now
puts now #=> Thu May 18 23:36:10 CDT 2006
puts now.to_date #=> 2006-05-18
puts now.to_s #=> Thu May 18 23:36:10 CDT 2006
puts now.to_s(:short) #=> 18 May 23:36
puts now.to_s(:long) #=> May 18, 2006 23:36
puts now.to_s(:db) #=> 2006-05-18 23:36:10
puts now.to_s(:rfc822) #=> Thu, 18 May 2006 23:36:10 -0500
puts now.ago(3600) #=> Thu May 18 22:36:10 CDT 2006
puts now.at_beginning_of_day #=> Thu May 18 00:00:00 CDT 2006
puts now.at_beginning_of_month #=> Mon May 01 00:00:00 CDT 2006
puts now.at_beginning_of_week #=> Mon May 15 00:00:00 CDT 2006
puts now.beginning_of_quarter #=> Sat Apr 01 00:00:00 CST 2006
puts now.at_beginning_of_year #=> Sun Jan 01 00:00:00 CST 2006
puts now.at_midnight #=> Thu May 18 00:00:00 CDT 2006
puts now.change(:hour => 13) #=> Thu May 18 13:00:00 CDT 2006
puts now.last_month #=> Tue Apr 18 23:36:10 CDT 2006
puts now.last_year #=> Wed May 18 23:36:10 CDT 2005
puts now.midnight #=> Thu May 18 00:00:00 CDT 2006
puts now.monday #=> Mon May 15 00:00:00 CDT 2006
puts now.months_ago(2) #=> Sat Mar 18 23:36:10 CST 2006
puts now.months_since(2) #=> Tue Jul 18 23:36:10 CDT 2006
puts now.next_week #=> Mon May 22 00:00:00 CDT 2006
puts now.next_year #=> Fri May 18 23:36:10 CDT 2007
puts now.seconds_since_midnight #=> 84970.423472
puts now.since(7200) #=> Fri May 19 01:36:10 CDT 2006
puts now.tomorrow #=> Fri May 19 23:36:10 CDT 2006
puts now.years_ago(2) #=> Tue May 18 23:36:10 CDT 2004
puts now.years_since(2) #=> Sun May 18 23:36:10 CDT 2008
puts now.yesterday #=> Wed May 17 23:36:10 CDT 2006
puts now.advance(:days => 30) #=> Sat Jun 17 23:36:10 CDT 2006
puts Time.days_in_month(2) #=> 28
puts Time.days_in_month(2, 2000) #=> 29

以上就是Ruby时间方法的相关知识讲解。

 

 

Time.now.end_of_day()

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【责任编辑： 曹凯 TEL：