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Time

Attributes

zone_default[RW]

Public Instance Methods

-(other) click to toggle source
Alias for: minus_with_coercion
<=>(other) click to toggle source
Also aliased as: compare_without_coercion
_dump(*args) click to toggle source
# File lib/active_support/core_ext/time/marshal.rb, line 20
def _dump(*args)
  obj = dup
  obj.instance_variable_set('@marshal_with_utc_coercion', utc?)
  obj._dump_without_utc_flag(*args)
end
_dump_without_utc_flag(*args) click to toggle source
Alias for: _dump
_dump_without_zone(*args) click to toggle source
Alias for: _dump
acts_like_time?() click to toggle source

Duck-types as a Time-like class. See Object#acts_like?.

# File lib/active_support/core_ext/time/acts_like.rb, line 5
def acts_like_time?
  true
end
advance(options) click to toggle source

Uses Date to provide precise Time calculations for years, months, and days. The options parameter takes a hash with any of these keys: :years, :months, :weeks, :days, :hours, :minutes, :seconds.

# File lib/active_support/core_ext/time/calculations.rb, line 89
def advance(options)
  unless options[:weeks].nil?
    options[:weeks], partial_weeks = options[:weeks].divmod(1)
    options[:days] = (options[:days] || 0) + 7 * partial_weeks
  end

  unless options[:days].nil?
    options[:days], partial_days = options[:days].divmod(1)
    options[:hours] = (options[:hours] || 0) + 24 * partial_days
  end

  d = to_date.advance(options)
  time_advanced_by_date = change(:year => d.year, :month => d.month, :day => d.day)
  seconds_to_advance = (options[:seconds] || 0) + (options[:minutes] || 0) * 60 + (options[:hours] || 0) * 3600
  seconds_to_advance == 0 ? time_advanced_by_date : time_advanced_by_date.since(seconds_to_advance)
end
ago(seconds) click to toggle source

Returns a new Time representing the time a number of seconds ago, this is basically a wrapper around the Numeric extension

# File lib/active_support/core_ext/time/calculations.rb, line 107
def ago(seconds)
  since(-seconds)
end
at_beginning_of_day() click to toggle source
Alias for: beginning_of_day
at_beginning_of_month() click to toggle source
Alias for: beginning_of_month
at_beginning_of_quarter() click to toggle source
at_beginning_of_week() click to toggle source
Alias for: beginning_of_week
at_beginning_of_year() click to toggle source
Alias for: beginning_of_year
at_end_of_month() click to toggle source
Alias for: end_of_month
at_end_of_quarter() click to toggle source
Alias for: end_of_quarter
at_end_of_week() click to toggle source
Alias for: end_of_week
at_end_of_year() click to toggle source
Alias for: end_of_year
at_midnight() click to toggle source
Alias for: beginning_of_day
beginning_of_day() click to toggle source

Returns a new Time representing the start of the day (0:00)

# File lib/active_support/core_ext/time/calculations.rb, line 190
def beginning_of_day
  #(self - seconds_since_midnight).change(:usec => 0)
  change(:hour => 0)
end
beginning_of_month() click to toggle source

Returns a new Time representing the start of the month (1st of the month, 0:00)

# File lib/active_support/core_ext/time/calculations.rb, line 204
def beginning_of_month
  #self - ((self.mday-1).days + self.seconds_since_midnight)
  change(:day => 1, :hour => 0)
end
Also aliased as: at_beginning_of_month
beginning_of_quarter() click to toggle source

Returns a new Time representing the start of the quarter (1st of january, april, july, october, 0:00)

# File lib/active_support/core_ext/time/calculations.rb, line 219
def beginning_of_quarter
  beginning_of_month.change(:month => [10, 7, 4, 1].detect { |m| m <= month })
end
Also aliased as: at_beginning_of_quarter
beginning_of_week() click to toggle source

Returns a new Time representing the “start” of this week (Monday, 0:00)

# File lib/active_support/core_ext/time/calculations.rb, line 165
def beginning_of_week
  days_to_monday = wday!=0 ? wday-1 : 6
  (self - days_to_monday.days).midnight
end
Also aliased as: monday, at_beginning_of_week
beginning_of_year() click to toggle source

Returns a new Time representing the start of the year (1st of january, 0:00)

# File lib/active_support/core_ext/time/calculations.rb, line 231
def beginning_of_year
  change(:month => 1, :day => 1, :hour => 0)
end
Also aliased as: at_beginning_of_year
change(options) click to toggle source

Returns a new Time where one or more of the elements have been changed according to the options parameter. The time options (hour, minute, sec, usec) reset cascadingly, so if only the hour is passed, then minute, sec, and usec is set to 0. If the hour and minute is passed, then sec and usec is set to 0.

# File lib/active_support/core_ext/time/calculations.rb, line 72
def change(options)
  ::Time.send(
    utc? ? :utc_time : :local_time,
    options[:year]  || year,
    options[:month] || month,
    options[:day]   || day,
    options[:hour]  || hour,
    options[:min]   || (options[:hour] ? 0 : min),
    options[:sec]   || ((options[:hour] || options[:min]) ? 0 : sec),
    options[:usec]  || ((options[:hour] || options[:min] || options[:sec]) ? 0 : usec)
  )
end
compare_with_coercion(other) click to toggle source

Layers additional behavior on Time#<=> so that DateTime and ActiveSupport::TimeWithZone instances can be chronologically compared with a Time

# File lib/active_support/core_ext/time/calculations.rb, line 284
def compare_with_coercion(other)
  # we're avoiding Time#to_datetime cause it's expensive
  other.is_a?(Time) ? compare_without_coercion(other.to_time) : to_datetime <=> other
end
Also aliased as: <=>
compare_without_coercion(other) click to toggle source
Alias for: <=>
end_of_day() click to toggle source

Returns a new Time representing the end of the day, 23:59:59.999999 (.999999999 in ruby1.9)

# File lib/active_support/core_ext/time/calculations.rb, line 199
def end_of_day
  change(:hour => 23, :min => 59, :sec => 59, :usec => 999999.999)
end
end_of_month() click to toggle source

Returns a new Time representing the end of the month (end of the last day of the month)

# File lib/active_support/core_ext/time/calculations.rb, line 211
def end_of_month
  #self - ((self.mday-1).days + self.seconds_since_midnight)
  last_day = ::Time.days_in_month(month, year)
  change(:day => last_day, :hour => 23, :min => 59, :sec => 59, :usec => 999999.999)
end
Also aliased as: at_end_of_month
end_of_quarter() click to toggle source

Returns a new Time representing the end of the quarter (end of the last day of march, june, september, december)

# File lib/active_support/core_ext/time/calculations.rb, line 225
def end_of_quarter
  beginning_of_month.change(:month => [3, 6, 9, 12].detect { |m| m >= month }).end_of_month
end
Also aliased as: at_end_of_quarter
end_of_week() click to toggle source

Returns a new Time representing the end of this week, (end of Sunday)

# File lib/active_support/core_ext/time/calculations.rb, line 173
def end_of_week
  days_to_sunday = wday!=0 ? 7-wday : 0
  (self + days_to_sunday.days).end_of_day
end
Also aliased as: at_end_of_week
end_of_year() click to toggle source

Returns a new Time representing the end of the year (end of the 31st of december)

# File lib/active_support/core_ext/time/calculations.rb, line 237
def end_of_year
  change(:month => 12, :day => 31, :hour => 23, :min => 59, :sec => 59, :usec => 999999.999)
end
Also aliased as: at_end_of_year
formatted_offset(colon = true, alternate_utc_string = nil) click to toggle source

Returns the UTC offset as an +HH:MM formatted string.

Time.local(2000).formatted_offset         # => "-06:00"
Time.local(2000).formatted_offset(false)  # => "-0600"
# File lib/active_support/core_ext/time/conversions.rb, line 54
def formatted_offset(colon = true, alternate_utc_string = nil)
  utc? && alternate_utc_string || ActiveSupport::TimeZone.seconds_to_utc_offset(utc_offset, colon)
end
future?() click to toggle source

Tells whether the Time object’s time lies in the future

# File lib/active_support/core_ext/time/calculations.rb, line 60
def future?
  self > ::Time.current
end
in(seconds) click to toggle source
Alias for: since
in_time_zone(zone = ::Time.zone) click to toggle source

Returns the simultaneous time in Time.zone.

Time.zone = 'Hawaii'         # => 'Hawaii'
Time.utc(2000).in_time_zone  # => Fri, 31 Dec 1999 14:00:00 HST -10:00

This method is similar to Time#localtime, except that it uses Time.zone 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 Time.zone.

Time.utc(2000).in_time_zone('Alaska')  # => Fri, 31 Dec 1999 15:00:00 AKST -09:00
# File lib/active_support/core_ext/time/zones.rb, line 81
def in_time_zone(zone = ::Time.zone)
  return self unless zone

  ActiveSupport::TimeWithZone.new(utc? ? self : getutc, ::Time.find_zone!(zone))
end
midnight() click to toggle source
Alias for: beginning_of_day
minus_with_coercion(other) click to toggle source

Time#- can also be used to determine the number of seconds between two Time instances. We’re layering on additional behavior so that ActiveSupport::TimeWithZone instances are coerced into values that Time#- will recognize

# File lib/active_support/core_ext/time/calculations.rb, line 275
def minus_with_coercion(other)
  other = other.comparable_time if other.respond_to?(:comparable_time)
  other.is_a?(DateTime) ? to_f - other.to_f : minus_without_coercion(other)
end
Also aliased as: -
minus_without_coercion(other) click to toggle source
Alias for: -
minus_without_duration(other) click to toggle source
Alias for: -
monday() click to toggle source
Alias for: beginning_of_week
months_ago(months) click to toggle source

Returns a new Time representing the time a number of specified months ago

# File lib/active_support/core_ext/time/calculations.rb, line 125
def months_ago(months)
  advance(:months => -months)
end
months_since(months) click to toggle source

Returns a new Time representing the time a number of specified months in the future

# File lib/active_support/core_ext/time/calculations.rb, line 130
def months_since(months)
  advance(:months => months)
end
next_month() click to toggle source

Short-hand for months_since(1)

# File lib/active_support/core_ext/time/calculations.rb, line 160
def next_month
  months_since(1)
end
next_week(day = :monday) click to toggle source

Returns a new Time representing the start of the given day in next week (default is Monday).

# File lib/active_support/core_ext/time/calculations.rb, line 185
def next_week(day = :monday)
  since(1.week).beginning_of_week.since(DAYS_INTO_WEEK[day].day).change(:hour => 0)
end
next_year() click to toggle source

Short-hand for years_since(1)

# File lib/active_support/core_ext/time/calculations.rb, line 150
def next_year
  years_since(1)
end
past?() click to toggle source

Tells whether the Time object’s time lies in the past

# File lib/active_support/core_ext/time/calculations.rb, line 50
def past?
  self < ::Time.current
end
prev_month() click to toggle source

Short-hand for months_ago(1)

# File lib/active_support/core_ext/time/calculations.rb, line 155
def prev_month
  months_ago(1)
end
prev_week(day = :monday) click to toggle source

Returns a new Time representing the start of the given day in the previous week (default is Monday).

# File lib/active_support/core_ext/time/calculations.rb, line 180
def prev_week(day = :monday)
  ago(1.week).beginning_of_week.since(DAYS_INTO_WEEK[day].day).change(:hour => 0)
end
prev_year() click to toggle source

Short-hand for years_ago(1)

# File lib/active_support/core_ext/time/calculations.rb, line 145
def prev_year
  years_ago(1)
end
seconds_since_midnight() click to toggle source

Seconds since midnight: Time.now.seconds_since_midnight

# File lib/active_support/core_ext/time/calculations.rb, line 65
def seconds_since_midnight
  to_i - change(:hour => 0).to_i + (usec / 1.0e+6)
end
since(seconds) click to toggle source

Returns a new Time representing the time a number of seconds since the instance time

# File lib/active_support/core_ext/time/calculations.rb, line 112
def since(seconds)
  self + seconds
rescue
  to_datetime.since(seconds)
end
Also aliased as: in
to_default_s(format = :default) click to toggle source
Alias for: to_s
to_formatted_s(format = :default) click to toggle source

Converts to a formatted string. See DATE_FORMATS for builtin formats.

This method is aliased to to_s.

time = Time.now                     # => Thu Jan 18 06:10:17 CST 2007

time.to_formatted_s(:time)          # => "06:10"
time.to_s(:time)                    # => "06:10"

time.to_formatted_s(:db)            # => "2007-01-18 06:10:17"
time.to_formatted_s(:number)        # => "20070118061017"
time.to_formatted_s(:short)         # => "18 Jan 06:10"
time.to_formatted_s(:long)          # => "January 18, 2007 06:10"
time.to_formatted_s(:long_ordinal)  # => "January 18th, 2007 06:10"
time.to_formatted_s(:rfc822)        # => "Thu, 18 Jan 2007 06:10:17 -0600"

Adding your own time formats to to_formatted_s

You can add your own formats to the Time::DATE_FORMATS hash. Use the format name as the hash key and either a strftime string or Proc instance that takes a time argument as the value.

# config/initializers/time_formats.rb
Time::DATE_FORMATS[:month_and_year] = "%B %Y"
Time::DATE_FORMATS[:short_ordinal] = lambda { |time| time.strftime("%B #{time.day.ordinalize}") }
# File lib/active_support/core_ext/time/conversions.rb, line 40
def to_formatted_s(format = :default)
  if formatter = DATE_FORMATS[format]
    formatter.respond_to?(:call) ? formatter.call(self).to_s : strftime(formatter)
  else
    to_default_s
  end
end
Also aliased as: to_s
to_s(format = :default) click to toggle source
Also aliased as: to_default_s
Alias for: to_formatted_s
to_time() click to toggle source

A method to keep Time, Date and DateTime instances interchangeable on conversions. In this case, it simply returns self.

# File lib/active_support/core_ext/time/conversions.rb, line 60
def to_time
  self
end
today?() click to toggle source

Tells whether the Time object’s time is today

# File lib/active_support/core_ext/time/calculations.rb, line 55
def today?
  to_date == ::Date.current
end
tomorrow() click to toggle source

Convenience method which returns a new Time representing the time 1 day since the instance time

# File lib/active_support/core_ext/time/calculations.rb, line 248
def tomorrow
  advance(:days => 1)
end
weeks_ago(weeks) click to toggle source

Returns a new Time representing the time a number of specified weeks ago.

# File lib/active_support/core_ext/time/calculations.rb, line 120
def weeks_ago(weeks)
  advance(:weeks => -weeks)
end
years_ago(years) click to toggle source

Returns a new Time representing the time a number of specified years ago

# File lib/active_support/core_ext/time/calculations.rb, line 135
def years_ago(years)
  advance(:years => -years)
end
years_since(years) click to toggle source

Returns a new Time representing the time a number of specified years in the future

# File lib/active_support/core_ext/time/calculations.rb, line 140
def years_since(years)
  advance(:years => years)
end
yesterday() click to toggle source

Convenience method which returns a new Time representing the time 1 day ago

# File lib/active_support/core_ext/time/calculations.rb, line 243
def yesterday
  advance(:days => -1)
end

Public Class Methods

===(other) click to toggle source

Overriding case equality method so that it returns true for ActiveSupport::TimeWithZone instances

# File lib/active_support/core_ext/time/calculations.rb, line 11
def ===(other)
  other.is_a?(::Time)
end
_load(marshaled_time) click to toggle source
# File lib/active_support/core_ext/time/marshal.rb, line 8
def _load(marshaled_time)
  time = _load_without_utc_flag(marshaled_time)
  time.instance_eval do
    if defined?(@marshal_with_utc_coercion)
      val = remove_instance_variable("@marshal_with_utc_coercion")
    end
    val ? utc : self
  end
end
_load_without_utc_flag(marshaled_time) click to toggle source
Alias for: _load
_load_without_zone(marshaled_time) click to toggle source
Alias for: _load
current() click to toggle source

Returns Time.zone.now when Time.zone or config.time_zone are set, otherwise just returns Time.now.

# File lib/active_support/core_ext/time/calculations.rb, line 44
def current
  ::Time.zone ? ::Time.zone.now : ::Time.now
end
days_in_month(month, year = now.year) click to toggle source

Return the number of days in the given month. If no year is specified, it will use the current year.

# File lib/active_support/core_ext/time/calculations.rb, line 17
def days_in_month(month, year = now.year)
  return 29 if month == 2 && ::Date.gregorian_leap?(year)
  COMMON_YEAR_DAYS_IN_MONTH[month]
end
find_zone(time_zone) click to toggle source
# File lib/active_support/core_ext/time/zones.rb, line 64
def find_zone(time_zone)
  find_zone!(time_zone) rescue nil
end
find_zone!(time_zone) click to toggle source

Returns a TimeZone instance or nil, or raises an ArgumentError for invalid timezones.

# File lib/active_support/core_ext/time/zones.rb, line 52
def find_zone!(time_zone)
  return time_zone if time_zone.nil? || time_zone.is_a?(ActiveSupport::TimeZone)
  # lookup timezone based on identifier (unless we've been passed a TZInfo::Timezone)
  unless time_zone.respond_to?(:period_for_local)
    time_zone = ActiveSupport::TimeZone[time_zone] || TZInfo::Timezone.get(time_zone)
  end
  # Return if a TimeZone instance, or wrap in a TimeZone instance if a TZInfo::Timezone
  time_zone.is_a?(ActiveSupport::TimeZone) ? time_zone : ActiveSupport::TimeZone.create(time_zone.name, nil, time_zone)
rescue TZInfo::InvalidTimezoneIdentifier
  raise ArgumentError, "Invalid Timezone: #{time_zone}"
end
local_time(*args) click to toggle source

Wraps class method time_with_datetime_fallback with utc_or_local set to :local.

# File lib/active_support/core_ext/time/calculations.rb, line 39
def local_time(*args)
  time_with_datetime_fallback(:local, *args)
end
time_with_datetime_fallback(utc_or_local, year, month=1, day=1, hour=0, min=0, sec=0, usec=0) click to toggle source

Returns a new Time if requested year can be accommodated by Ruby’s Time class (i.e., if year is within either 1970..2038 or 1902..2038, depending on system architecture); otherwise returns a DateTime.

# File lib/active_support/core_ext/time/calculations.rb, line 25
def time_with_datetime_fallback(utc_or_local, year, month=1, day=1, hour=0, min=0, sec=0, usec=0)
  time = ::Time.send(utc_or_local, year, month, day, hour, min, sec, usec)
  # This check is needed because Time.utc(y) returns a time object in the 2000s for 0 <= y <= 138.
  time.year == year ? time : ::DateTime.civil_from_format(utc_or_local, year, month, day, hour, min, sec)
rescue
  ::DateTime.civil_from_format(utc_or_local, year, month, day, hour, min, sec)
end
use_zone(time_zone) click to toggle source

Allows override of Time.zone locally inside supplied block; resets Time.zone to existing value when done.

# File lib/active_support/core_ext/time/zones.rb, line 41
def use_zone(time_zone)
  new_zone = find_zone!(time_zone)
  begin
    old_zone, ::Time.zone = ::Time.zone, new_zone
    yield
  ensure
    ::Time.zone = old_zone
  end
end
utc_time(*args) click to toggle source

Wraps class method time_with_datetime_fallback with utc_or_local set to :utc.

# File lib/active_support/core_ext/time/calculations.rb, line 34
def utc_time(*args)
  time_with_datetime_fallback(:utc, *args)
end
zone() click to toggle source

Returns the TimeZone for the current request, if this has been set (via Time.zone=). If Time.zone has not been set for the current request, returns the TimeZone specified in config.time_zone.

# File lib/active_support/core_ext/time/zones.rb, line 9
def zone
  Thread.current[:time_zone] || zone_default
end
zone=(time_zone) click to toggle source

Sets Time.zone to a TimeZone object for the current request/thread.

This method accepts any of the following:

  • A Rails TimeZone object.

  • An identifier for a Rails TimeZone object (e.g., “Eastern Time (US & Canada)”, -5.hours).

  • A TZInfo::Timezone object.

  • An identifier for a TZInfo::Timezone object (e.g., “America/New_York”).

Here’s an example of how you might set Time.zone on a per request basis and reset it when the request is done. current_user.time_zone just needs to return a string identifying the user’s preferred time zone:

class ApplicationController < ActionController::Base
  around_filter :set_time_zone

  def set_time_zone
    old_time_zone = Time.zone
    Time.zone = current_user.time_zone if logged_in?
    yield
  ensure
    Time.zone = old_time_zone
  end
end
# File lib/active_support/core_ext/time/zones.rb, line 36
def zone=(time_zone)
  Thread.current[:time_zone] = find_zone!(time_zone)
end

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