ruby 获取给定时区的时间 [英] ruby get Time in given timezone

问题描述

在 ruby​​ 中，如何获取给定时区的当前时间?我知道与 UTC 的偏移量，并希望使用该偏移量获取时区中的当前时间.

In ruby, how can I get current time in a given timezone? I know the offset from UTC, and want to get the current time in the timezone with that offset.

推荐答案

一个更简单、更轻量级的解决方案:

A simpler, more lightweight solution:

Time.now.getlocal('-08:00')

详细记录此处.

更新 2017.02.17:如果您有一个时区并想将其转换为可以与包含 DST 的 #getlocal 一起使用的偏移量，这是一种方法:

Update 2017.02.17: If you've got a timezone and want to turn that into an offset you can use with #getlocal inclusive of DST, here's one way to do it:

require 'tzinfo'

timezone_name = 'US/Pacific'

timezone = TZInfo::Timezone.get(timezone_name)
offset_in_hours = timezone.current_period.utc_total_offset_rational.numerator
offset = '%+.2d:00' % offset_in_hours

Time.now.getlocal(offset)

如果您想在 #now 以外的时间执行此操作，您应该研究 Ruby 时间类，特别是 Time#gm 和 Time#local 和 Ruby TZInfo 类，特别是 TZInfo::Timezone.get 和 TZInfo::Timezone#period_for_local

If you want to do this for moments other than #now, you should study up on the Ruby Time class, particularly Time#gm and Time#local, and the Ruby TZInfo classes, particularly TZInfo::Timezone.get and TZInfo::Timezone#period_for_local

这篇关于ruby 获取给定时区的时间的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！