75 lines
3.2 KiB
Ruby
75 lines
3.2 KiB
Ruby
module ActiveSupport #:nodoc:
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module CoreExtensions #:nodoc:
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module Time #:nodoc:
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# Methods for creating TimeWithZone objects from Time instances
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module Zones
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def self.included(base) #:nodoc:
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base.extend(ClassMethods) if base == ::Time # i.e., don't include class methods in DateTime
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end
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module ClassMethods
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attr_accessor :zone_default
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def zone
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Thread.current[:time_zone] || zone_default
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end
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# Sets a global default time zone, separate from the system time zone in ENV['TZ'].
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# Accepts either a Rails TimeZone object, a string that identifies a
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# Rails TimeZone object (e.g., "Central Time (US & Canada)"), or a TZInfo::Timezone object.
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#
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# Any Time or DateTime object can use this default time zone, via <tt>in_time_zone</tt>.
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#
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# Time.zone = 'Hawaii' # => 'Hawaii'
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# Time.utc(2000).in_time_zone # => Fri, 31 Dec 1999 14:00:00 HST -10:00
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def zone=(time_zone)
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Thread.current[:time_zone] = get_zone(time_zone)
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end
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# Allows override of Time.zone locally inside supplied block; resets Time.zone to existing value when done
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def use_zone(time_zone)
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old_zone, ::Time.zone = ::Time.zone, get_zone(time_zone)
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yield
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ensure
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::Time.zone = old_zone
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end
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# Returns Time.zone.now when config.time_zone is set, otherwise just returns Time.now.
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def current
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::Time.zone_default ? ::Time.zone.now : ::Time.now
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end
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private
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def get_zone(time_zone)
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return time_zone if time_zone.nil? || time_zone.is_a?(TimeZone)
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# lookup timezone based on identifier (unless we've been passed a TZInfo::Timezone)
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unless time_zone.respond_to?(:period_for_local)
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time_zone = TimeZone[time_zone] || TZInfo::Timezone.get(time_zone) rescue nil
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end
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# Return if a TimeZone instance, or wrap in a TimeZone instance if a TZInfo::Timezone
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if time_zone
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time_zone.is_a?(TimeZone) ? time_zone : TimeZone.create(time_zone.name, nil, time_zone)
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end
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end
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end
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# Returns the simultaneous time in Time.zone.
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#
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# Time.zone = 'Hawaii' # => 'Hawaii'
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# Time.utc(2000).in_time_zone # => Fri, 31 Dec 1999 14:00:00 HST -10:00
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#
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# This method is similar to Time#localtime, except that it uses Time.zone as the local zone
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# instead of the operating system's time zone.
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#
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# You can also pass in a TimeZone instance or string that identifies a TimeZone as an argument,
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# and the conversion will be based on that zone instead of Time.zone.
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#
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# Time.utc(2000).in_time_zone('Alaska') # => Fri, 31 Dec 1999 15:00:00 AKST -09:00
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def in_time_zone(zone = ::Time.zone)
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ActiveSupport::TimeWithZone.new(utc? ? self : getutc, ::Time.send!(:get_zone, zone))
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end
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end
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end
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end
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end |