我怎样才能找到一个 rub子 时间目标是指某一时间区某一天起算。
I was try to measure what is faster and what should be the best way to compare two dates, from datetime record in MySql db. There are several approaches how to grab a date from date time, but I was ...
我怎样才能找到一个 rub子 时间目标是指某一时间区某一天起算。
I ended up using the #local
method on the ActiveSupport::TimeZone
object passing components of the Date
object.
# Get example date and time zone...
date = Date.today
timezone = ActiveSupport::TimeZone[ America/New_York ]
# Get beginning of day for date in timezone
timezone.local(date.year, date.month, date.day)
date = Date.today
date.to_time.in_time_zone( America/New_York ).beginning_of_day
目前产出=>2011-11-02 00:00:00-0400
Time.now.in_time_zone( Asia/Shanghai ).beginning_of_day
Currently outputs => 2011-11-03 00:00:00 +0800
date = Date.today
date.to_time.in_time_zone( Asia/Shanghai ).beginning_of_day
现产出=>2011-11-02 00:00:00 +0800
不知道这是否有助于我,但是这给我带来了我的谷歌·普森配额重新设定的时间:
# The most recent midnight in California in UTC time
def last_california_midnight
(Time.now.utc - 7.hours).midnight + 7.hours
end
我与Mongoid一样这样做,例如:
def api_calls_today
Call.where(updated_at: { $gte => last_california_midnight }).count
end
无论何时部署该守则,只要蒙戈被安排到中央直辖区,这都不会奏效。
具体日期,例如1/2/2021
(日:1个月:2年:2021)
("1/2/2021").to_time.in_time_zone( Asia/Shanghai ).beginning_of_day
#=> Mon, 01 Feb 2021 00:00:00.000000000 CST +08:00
每天
Time.zone = Asia/Shanghai
Time.current.beginning_of_day
#=> Mon, 12 Jul 2021 00:00:00.000000000 CST +08:00
我总是提到时间,而不是日期,因为我很相信,我从一开始就在理想时间区取得正确的产出。
通知说,这两种方式使你获得同样的格式结果。 因此,你可以在进一步的时间差额计算中加以利用。
在确定时间区时,我更喜欢使用<条码>时。 不管怎样,请总是在使用铁丝网之前检查结果。
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