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# frozen_string_literal: true
module DateAndTime
module Zones
# Returns the simultaneous time in <tt>Time.zone</tt> if a zone is given or
# if Time.zone_default is set. Otherwise, it returns the current time.
#
# Time.zone = 'Hawaii' # => 'Hawaii'
# Time.utc(2000).in_time_zone # => Fri, 31 Dec 1999 14:00:00 HST -10:00
# Date.new(2000).in_time_zone # => Sat, 01 Jan 2000 00:00:00 HST -10:00
#
# This method is similar to Time#localtime, except that it uses <tt>Time.zone</tt> as the local zone
# instead of the operating system's time zone.
#
# You can also pass in a TimeZone instance or string that identifies a TimeZone as an argument,
# and the conversion will be based on that zone instead of <tt>Time.zone</tt>.
#
# Time.utc(2000).in_time_zone('Alaska') # => Fri, 31 Dec 1999 15:00:00 AKST -09:00
# Date.new(2000).in_time_zone('Alaska') # => Sat, 01 Jan 2000 00:00:00 AKST -09:00
def in_time_zone(zone = ::Time.zone)
time_zone = ::Time.find_zone! zone
time = acts_like?(:time) ? self : nil
if time_zone
time_with_zone(time, time_zone)
else
time || to_time
end
end
private
def time_with_zone(time, zone)
if time
ActiveSupport::TimeWithZone.new(time.utc? ? time : time.getutc, zone)
else
ActiveSupport::TimeWithZone.new(nil, zone, to_time(:utc))
end
end
end
end
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