A Time-like class that can represent a time in any time zone. Necessary because standard Ruby Time instances are limited to UTC and the system‘s ENV[‘TZ’] zone.
You shouldn‘t ever need to create a TimeWithZone instance directly via new — instead, Rails provides the methods local, parse, at and now on TimeZone instances, and in_time_zone on Time and DateTime instances, for a more user-friendly syntax. Examples:
Time.zone = 'Eastern Time (US & Canada)' # => 'Eastern Time (US & Canada)' Time.zone.local(2007, 2, 10, 15, 30, 45) # => Sat, 10 Feb 2007 15:30:45 EST -05:00 Time.zone.parse('2007-02-01 15:30:45') # => Sat, 10 Feb 2007 15:30:45 EST -05:00 Time.zone.at(1170361845) # => Sat, 10 Feb 2007 15:30:45 EST -05:00 Time.zone.now # => Sun, 18 May 2008 13:07:55 EDT -04:00 Time.utc(2007, 2, 10, 20, 30, 45).in_time_zone # => Sat, 10 Feb 2007 15:30:45 EST -05:00
See TimeZone and ActiveSupport::CoreExtensions::Time::Zones for further documentation for these methods.
TimeWithZone instances implement the same API as Ruby Time instances, so that Time and TimeWithZone instances are interchangable. Examples:
t = Time.zone.now # => Sun, 18 May 2008 13:27:25 EDT -04:00 t.hour # => 13 t.dst? # => true t.utc_offset # => -14400 t.zone # => "EDT" t.to_s(:rfc822) # => "Sun, 18 May 2008 13:27:25 -0400" t + 1.day # => Mon, 19 May 2008 13:27:25 EDT -04:00 t.beginning_of_year # => Tue, 01 Jan 2008 00:00:00 EST -05:00 t > Time.utc(1999) # => true t.is_a?(Time) # => true t.is_a?(ActiveSupport::TimeWithZone) # => true
- +
- -
- <=>
- acts_like_time?
- advance
- ago
- as_json
- between?
- comparable_time
- dst?
- eql?
- formatted_offset
- freeze
- future?
- getgm
- getlocal
- getutc
- gmt?
- gmt_offset
- gmtime
- gmtoff
- hash
- httpdate
- in_time_zone
- inspect
- is_a?
- isdst
- iso8601
- kind_of?
- localtime
- marshal_dump
- marshal_load
- method_missing
- new
- past?
- period
- respond_to?
- rfc2822
- rfc822
- since
- strftime
- time
- to_a
- to_datetime
- to_f
- to_formatted_s
- to_i
- to_s
- to_time
- to_yaml
- today?
- tv_sec
- usec
- utc
- utc?
- utc_offset
- xmlschema
- zone
- Comparable
[R] | time_zone |
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# File activesupport/lib/active_support/time_with_zone.rb, line 37 37: def initialize(utc_time, time_zone, local_time = nil, period = nil) 38: @utc, @time_zone, @time = utc_time, time_zone, local_time 39: @period = @utc ? period : get_period_and_ensure_valid_local_time 40: end
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# File activesupport/lib/active_support/time_with_zone.rb, line 193 193: def +(other) 194: # If we're adding a Duration of variable length (i.e., years, months, days), move forward from #time, 195: # otherwise move forward from #utc, for accuracy when moving across DST boundaries 196: if duration_of_variable_length?(other) 197: method_missing(:+, other) 198: else 199: result = utc.acts_like?(:date) ? utc.since(other) : utc + other rescue utc.since(other) 200: result.in_time_zone(time_zone) 201: end 202: end
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# File activesupport/lib/active_support/time_with_zone.rb, line 204 204: def -(other) 205: # If we're subtracting a Duration of variable length (i.e., years, months, days), move backwards from #time, 206: # otherwise move backwards #utc, for accuracy when moving across DST boundaries 207: if other.acts_like?(:time) 208: utc.to_f - other.to_f 209: elsif duration_of_variable_length?(other) 210: method_missing(:-, other) 211: else 212: result = utc.acts_like?(:date) ? utc.ago(other) : utc - other rescue utc.ago(other) 213: result.in_time_zone(time_zone) 214: end 215: end
Use the time in UTC for comparisons.
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# File activesupport/lib/active_support/time_with_zone.rb, line 169 169: def <=>(other) 170: utc <=> other 171: end
So that self acts_like?(:time).
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# File activesupport/lib/active_support/time_with_zone.rb, line 278 278: def acts_like_time? 279: true 280: end
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# File activesupport/lib/active_support/time_with_zone.rb, line 231 231: def advance(options) 232: # If we're advancing a value of variable length (i.e., years, weeks, months, days), advance from #time, 233: # otherwise advance from #utc, for accuracy when moving across DST boundaries 234: if options.values_at(:years, :weeks, :months, :days).any? 235: method_missing(:advance, options) 236: else 237: utc.advance(options).in_time_zone(time_zone) 238: end 239: end
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# File activesupport/lib/active_support/time_with_zone.rb, line 227 227: def ago(other) 228: since(-other) 229: end
Coerces the date to a string for JSON encoding.
ISO 8601 format is used if ActiveSupport::JSON::Encoding.use_standard_json_time_format is set.
Examples
# With ActiveSupport::JSON::Encoding.use_standard_json_time_format = true Time.utc(2005,2,1,15,15,10).in_time_zone.to_json # => "2005-02-01T15:15:10Z" # With ActiveSupport::JSON::Encoding.use_standard_json_time_format = false Time.utc(2005,2,1,15,15,10).in_time_zone.to_json # => "2005/02/01 15:15:10 +0000"
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# File activesupport/lib/active_support/time_with_zone.rb, line 124 124: def as_json(options = nil) 125: if ActiveSupport::JSON::Encoding.use_standard_json_time_format 126: xmlschema 127: else 128: %(#{time.strftime("%Y/%m/%d %H:%M:%S")} #{formatted_offset(false)}) 129: end 130: end
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# File activesupport/lib/active_support/time_with_zone.rb, line 173 173: def between?(min, max) 174: utc.between?(min, max) 175: end
Alias for utc
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# File activesupport/lib/active_support/time_with_zone.rb, line 73 73: def dst? 74: period.dst? 75: end
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# File activesupport/lib/active_support/time_with_zone.rb, line 189 189: def eql?(other) 190: utc == other 191: end
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# File activesupport/lib/active_support/time_with_zone.rb, line 89 89: def formatted_offset(colon = true, alternate_utc_string = nil) 90: utc? && alternate_utc_string || utc_offset.to_utc_offset_s(colon) 91: end
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# File activesupport/lib/active_support/time_with_zone.rb, line 288 288: def freeze 289: period; utc; time # preload instance variables before freezing 290: super 291: end
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# File activesupport/lib/active_support/time_with_zone.rb, line 185 185: def future? 186: utc.future? 187: end
Alias for utc
Alias for localtime
Alias for utc
Alias for utc?
Alias for utc_offset
Alias for utc
Alias for utc_offset
Alias for to_i
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# File activesupport/lib/active_support/time_with_zone.rb, line 140 140: def httpdate 141: utc.httpdate 142: end
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# File activesupport/lib/active_support/time_with_zone.rb, line 62 62: def in_time_zone(new_zone = ::Time.zone) 63: return self if time_zone == new_zone 64: utc.in_time_zone(new_zone) 65: end
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# File activesupport/lib/active_support/time_with_zone.rb, line 98 98: def inspect 99: "#{time.strftime('%a, %d %b %Y %H:%M:%S')} #{zone} #{formatted_offset}" 100: end
Say we‘re a Time to thwart type checking.
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# File activesupport/lib/active_support/time_with_zone.rb, line 283 283: def is_a?(klass) 284: klass == ::Time || super 285: end
Alias for xmlschema
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# File activesupport/lib/active_support/time_with_zone.rb, line 68 68: def localtime 69: utc.getlocal 70: end
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# File activesupport/lib/active_support/time_with_zone.rb, line 293 293: def marshal_dump 294: [utc, time_zone.name, time] 295: end
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# File activesupport/lib/active_support/time_with_zone.rb, line 297 297: def marshal_load(variables) 298: initialize(variables[0].utc, ::Time.__send__(:get_zone, variables[1]), variables[2].utc) 299: end
Send the missing method to time instance, and wrap result in a new TimeWithZone with the existing time_zone.
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# File activesupport/lib/active_support/time_with_zone.rb, line 309 309: def method_missing(sym, *args, &block) 310: result = time.__send__(sym, *args, &block) 311: result.acts_like?(:time) ? self.class.new(nil, time_zone, result) : result 312: end
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# File activesupport/lib/active_support/time_with_zone.rb, line 177 177: def past? 178: utc.past? 179: end
Returns the underlying TZInfo::TimezonePeriod.
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# File activesupport/lib/active_support/time_with_zone.rb, line 57 57: def period 58: @period ||= time_zone.period_for_utc(@utc) 59: end
Ensure proxy class responds to all methods that underlying time instance responds to.
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# File activesupport/lib/active_support/time_with_zone.rb, line 302 302: def respond_to?(sym, include_priv = false) 303: # consistently respond false to acts_like?(:date), regardless of whether #time is a Time or DateTime 304: return false if sym.to_s == 'acts_like_date?' 305: super || time.respond_to?(sym, include_priv) 306: end
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# File activesupport/lib/active_support/time_with_zone.rb, line 144 144: def rfc2822 145: to_s(:rfc822) 146: end
Alias for rfc2822
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# File activesupport/lib/active_support/time_with_zone.rb, line 217 217: def since(other) 218: # If we're adding a Duration of variable length (i.e., years, months, days), move forward from #time, 219: # otherwise move forward from #utc, for accuracy when moving across DST boundaries 220: if duration_of_variable_length?(other) 221: method_missing(:since, other) 222: else 223: utc.since(other).in_time_zone(time_zone) 224: end 225: end
Replaces %Z and %z directives with zone and formatted_offset, respectively, before passing to Time#strftime, so that zone information is correct
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# File activesupport/lib/active_support/time_with_zone.rb, line 163 163: def strftime(format) 164: format = format.gsub('%Z', zone).gsub('%z', formatted_offset(false)) 165: time.strftime(format) 166: end
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# File activesupport/lib/active_support/time_with_zone.rb, line 43 43: def time 44: @time ||= period.to_local(@utc) 45: end
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# File activesupport/lib/active_support/time_with_zone.rb, line 254 254: def to_a 255: [time.sec, time.min, time.hour, time.day, time.mon, time.year, time.wday, time.yday, dst?, zone] 256: end
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# File activesupport/lib/active_support/time_with_zone.rb, line 273 273: def to_datetime 274: utc.to_datetime.new_offset(Rational(utc_offset, 86_400)) 275: end
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# File activesupport/lib/active_support/time_with_zone.rb, line 258 258: def to_f 259: utc.to_f 260: end
Alias for to_s
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# File activesupport/lib/active_support/time_with_zone.rb, line 262 262: def to_i 263: utc.to_i 264: end
:db format outputs time in UTC; all others output time in local. Uses TimeWithZone‘s strftime, so %Z and %z work correctly.
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# File activesupport/lib/active_support/time_with_zone.rb, line 151 151: def to_s(format = :default) 152: return utc.to_s(format) if format == :db 153: if formatter = ::Time::DATE_FORMATS[format] 154: formatter.respond_to?(:call) ? formatter.call(self).to_s : strftime(formatter) 155: else 156: "#{time.strftime("%Y-%m-%d %H:%M:%S")} #{formatted_offset(false, 'UTC')}" # mimicking Ruby 1.9 Time#to_s format 157: end 158: end
A TimeWithZone acts like a Time, so just return self.
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# File activesupport/lib/active_support/time_with_zone.rb, line 269 269: def to_time 270: self 271: end
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# File activesupport/lib/active_support/time_with_zone.rb, line 132 132: def to_yaml(options = {}) 133: if options.kind_of?(YAML::Emitter) 134: utc.to_yaml(options) 135: else 136: time.to_yaml(options).gsub('Z', formatted_offset(true, 'Z')) 137: end 138: end
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# File activesupport/lib/active_support/time_with_zone.rb, line 181 181: def today? 182: time.today? 183: end
Alias for to_i
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# File activesupport/lib/active_support/time_with_zone.rb, line 250 250: def usec 251: time.respond_to?(:usec) ? time.usec : 0 252: end
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# File activesupport/lib/active_support/time_with_zone.rb, line 48 48: def utc 49: @utc ||= period.to_utc(@time) 50: end
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# File activesupport/lib/active_support/time_with_zone.rb, line 78 78: def utc? 79: time_zone.name == 'UTC' 80: end
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# File activesupport/lib/active_support/time_with_zone.rb, line 83 83: def utc_offset 84: period.utc_total_offset 85: end
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# File activesupport/lib/active_support/time_with_zone.rb, line 102 102: def xmlschema(fraction_digits = 0) 103: fraction = if fraction_digits > 0 104: ".%i" % time.usec.to_s[0, fraction_digits] 105: end 106: 107: "#{time.strftime("%Y-%m-%dT%H:%M:%S")}#{fraction}#{formatted_offset(true, 'Z')}" 108: end
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# File activesupport/lib/active_support/time_with_zone.rb, line 94 94: def zone 95: period.zone_identifier.to_s 96: end