如何在特定时区(最好是我的应用的默认时区而不是UTC)中创建新的DateTime对象? [英] How to create a new DateTime object in a specific time zone (preferably the default time zone of my app, not UTC)?
问题描述
我已在 /config/application.rb
中设置了时区,并且我希望应用程序中生成的所有时间默认情况下都处于该时区。我创建了一个新的 DateTime
对象(使用 .new
),它在 GMT
。如何使其处于应用程序所在的时区?
I have set the time zone in /config/application.rb
, and I expect all times generated in my app to be in this time zone by default, yet when I create a new DateTime
object (using .new
), it creates it in GMT
. How can I get it to be in my app's time zone?
/config/application.rb
config.time_zone = 'Pacific Time (US & Canada)'
irb
irb> DateTime.now
=> Wed, 11 Jul 2012 19:04:56 -0700
irb> mydate = DateTime.new(2012, 07, 11, 20, 10, 0)
=> Wed, 11 Jul 2012 20:10:00 +0000 # GMT, but I want PDT
使用 in_time_zone
不起作用,因为这只是将GMT时间转换为PDT时间,这是错误的时间:
Using in_time_zone
doesn't work because that just converts the GMT time to PDT time, which is the wrong time:
irb> mydate.in_time_zone('Pacific Time (US & Canada)')
=> Wed, 11 Jul 2012 13:10:00 PDT -07:00 # wrong time (I want 20:10)
推荐答案
您可以使用ActiveSupport的 TimeWithZone ( Time.zone
)对象来创建和解析应用程序时区中的日期:
You can use ActiveSupport's TimeWithZone (Time.zone
) object to create and parse dates in the time zone of your application:
1.9.3p0 :001 > Time.zone.now
=> Wed, 11 Jul 2012 19:47:03 PDT -07:00
1.9.3p0 :002 > Time.zone.parse('2012-07-11 21:00')
=> Wed, 11 Jul 2012 21:00:00 PDT -07:00
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