Class: Date
- Defined in:
- activesupport/lib/active_support/json/encoding.rb,
activesupport/lib/active_support/core_ext/date/zones.rb,
activesupport/lib/active_support/core_ext/date/acts_like.rb,
activesupport/lib/active_support/core_ext/date/conversions.rb,
activesupport/lib/active_support/core_ext/date/calculations.rb
Constant Summary collapse
- DATE_FORMATS =
{ :short => "%e %b", :long => "%B %e, %Y", :db => "%Y-%m-%d", :number => "%Y%m%d", :long_ordinal => lambda { |date| date.strftime("%B #{ActiveSupport::Inflector.ordinalize(date.day)}, %Y") }, # => "April 25th, 2007" :rfc822 => "%e %b %Y" }
- DAYS_INTO_WEEK =
{ :monday => 0, :tuesday => 1, :wednesday => 2, :thursday => 3, :friday => 4, :saturday => 5, :sunday => 6 }
Class Method Summary collapse
-
.current ⇒ Object
Returns Time.zone.today when
Time.zone
orconfig.time_zone
are set, otherwise just returns Date.today. -
.tomorrow ⇒ Object
Returns a new Date representing the date 1 day after today (i.e. tomorrow’s date).
-
.yesterday ⇒ Object
Returns a new Date representing the date 1 day ago (i.e. yesterday’s date).
Instance Method Summary collapse
-
#>>(n) ⇒ Object
Backported from 1.9.
-
#acts_like_date? ⇒ Boolean
Duck-types as a Date-like class.
-
#advance(options) ⇒ Object
Provides precise Date calculations for years, months, and days.
-
#ago(seconds) ⇒ Object
Converts Date to a Time (or DateTime if necessary) with the time portion set to the beginning of the day (0:00) and then subtracts the specified number of seconds.
-
#as_json(options = nil) ⇒ Object
:nodoc:.
-
#beginning_of_day ⇒ Object
(also: #midnight, #at_midnight, #at_beginning_of_day)
Converts Date to a Time (or DateTime if necessary) with the time portion set to the beginning of the day (0:00).
-
#beginning_of_month ⇒ Object
(also: #at_beginning_of_month)
Returns a new ; DateTime objects will have time set to 0:00DateTime representing the start of the month (1st of the month; DateTime objects will have time set to 0:00).
-
#beginning_of_quarter ⇒ Object
(also: #at_beginning_of_quarter)
Returns a new Date/DateTime representing the start of the quarter (1st of january, april, july, october; DateTime objects will have time set to 0:00).
-
#beginning_of_week ⇒ Object
(also: #monday, #at_beginning_of_week)
Returns a new Date/DateTime representing the “start” of this week (i.e, Monday; DateTime objects will have time set to 0:00).
-
#beginning_of_year ⇒ Object
(also: #at_beginning_of_year)
Returns a new Date/DateTime representing the start of the year (1st of january; DateTime objects will have time set to 0:00).
-
#change(options) ⇒ Object
Returns a new Date where one or more of the elements have been changed according to the
options
parameter. -
#end_of_day ⇒ Object
Converts Date to a Time (or DateTime if necessary) with the time portion set to the end of the day (23:59:59).
-
#end_of_month ⇒ Object
(also: #at_end_of_month)
Returns a new Date/DateTime representing the end of the month (last day of the month; DateTime objects will have time set to 0:00).
-
#end_of_quarter ⇒ Object
(also: #at_end_of_quarter)
Returns a new Date/DateTime representing the end of the quarter (last day of march, june, september, december; DateTime objects will have time set to 23:59:59).
-
#end_of_week ⇒ Object
(also: #sunday, #at_end_of_week)
Returns a new Date/DateTime representing the end of this week (Sunday, DateTime objects will have time set to 23:59:59).
-
#end_of_year ⇒ Object
(also: #at_end_of_year)
Returns a new Time representing the end of the year (31st of december; DateTime objects will have time set to 23:59:59).
-
#future? ⇒ Boolean
Returns true if the Date object’s date lies in the future.
- #iso8601 ⇒ Object (also: #rfc3339)
-
#minus_with_duration(other) ⇒ Object
(also: #-)
:nodoc:.
-
#months_ago(months) ⇒ Object
Returns a new Date/DateTime representing the time a number of specified months ago.
-
#months_since(months) ⇒ Object
Returns a new Date/DateTime representing the time a number of specified months in the future.
-
#next_month ⇒ Object
Shorthand for months_since(1).
-
#next_week(day = :monday) ⇒ Object
Returns a new Date/DateTime representing the start of the given day in next week (default is Monday).
-
#next_year ⇒ Object
Shorthand for years_since(1).
-
#past? ⇒ Boolean
Returns true if the Date object’s date lies in the past.
-
#plus_with_duration(other) ⇒ Object
(also: #+)
:nodoc:.
-
#prev_month ⇒ Object
Shorthand for months_ago(1).
-
#prev_week(day = :monday) ⇒ Object
Returns a new Date/DateTime representing the start of the given day in the previous week (default is Monday).
-
#prev_year ⇒ Object
Shorthand for years_ago(1).
-
#readable_inspect ⇒ Object
(also: #inspect)
Overrides the default inspect method with a human readable one, e.g., “Mon, 21 Feb 2005”.
-
#since(seconds) ⇒ Object
(also: #in)
Converts Date to a Time (or DateTime if necessary) with the time portion set to the beginning of the day (0:00) and then adds the specified number of seconds.
-
#to_date ⇒ Object
A method to keep Time, Date and DateTime instances interchangeable on conversions.
-
#to_datetime ⇒ Object
Converts a Date instance to a DateTime, where the time is set to the beginning of the day and UTC offset is set to 0.
-
#to_formatted_s(format = :default) ⇒ Object
(also: #to_s)
Convert to a formatted string.
-
#to_time(form = :local) ⇒ Object
Converts a Date instance to a Time, where the time is set to the beginning of the day.
-
#to_time_in_current_zone ⇒ Object
Converts Date to a TimeWithZone in the current zone if Time.zone or Time.zone_default is set, otherwise converts Date to a Time via Date#to_time.
-
#today? ⇒ Boolean
Returns true if the Date object’s date is today.
-
#tomorrow ⇒ Object
Convenience method which returns a new Date/DateTime representing the time 1 day since the instance time.
-
#weeks_ago(weeks) ⇒ Object
Returns a new Date/DateTime representing the time a number of specified weeks ago.
- #xmlschema ⇒ Object
-
#years_ago(years) ⇒ Object
Returns a new Date/DateTime representing the time a number of specified years ago.
-
#years_since(years) ⇒ Object
Returns a new Date/DateTime representing the time a number of specified years in the future.
-
#yesterday ⇒ Object
Convenience method which returns a new Date/DateTime representing the time 1 day ago.
Class Method Details
.current ⇒ Object
Returns Time.zone.today when Time.zone
or config.time_zone
are set, otherwise just returns Date.today.
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# File 'activesupport/lib/active_support/core_ext/date/calculations.rb', line 40 def current ::Time.zone ? ::Time.zone.today : ::Date.today end |
Instance Method Details
#>>(n) ⇒ Object
Backported from 1.9. The one in 1.8 leads to incorrect next_month and friends for dates where the calendar reform is involved. It additionally prevents an infinite loop fixed in r27013.
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# File 'activesupport/lib/active_support/core_ext/date/calculations.rb', line 16 def >>(n) y, m = (year * 12 + (mon - 1) + n).divmod(12) m, = (m + 1) .divmod(1) d = mday until jd2 = self.class.valid_civil?(y, m, d, start) d -= 1 raise ArgumentError, 'invalid date' unless d > 0 end self + (jd2 - jd) end |
#acts_like_date? ⇒ Boolean
Duck-types as a Date-like class. See Object#acts_like?.
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# File 'activesupport/lib/active_support/core_ext/date/acts_like.rb', line 5 def acts_like_date? true end |
#advance(options) ⇒ Object
Provides precise Date calculations for years, months, and days. The options
parameter takes a hash with any of these keys: :years
, :months
, :weeks
, :days
.
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# File 'activesupport/lib/active_support/core_ext/date/calculations.rb', line 108 def advance() = .dup d = self d = d >> .delete(:years) * 12 if [:years] d = d >> .delete(:months) if [:months] d = d + .delete(:weeks) * 7 if [:weeks] d = d + .delete(:days) if [:days] d end |
#ago(seconds) ⇒ Object
Converts Date to a Time (or DateTime if necessary) with the time portion set to the beginning of the day (0:00) and then subtracts the specified number of seconds.
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# File 'activesupport/lib/active_support/core_ext/date/calculations.rb', line 62 def ago(seconds) to_time_in_current_zone.since(-seconds) end |
#as_json(options = nil) ⇒ Object
:nodoc:
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# File 'activesupport/lib/active_support/json/encoding.rb', line 270 def as_json( = nil) #:nodoc: if ActiveSupport.use_standard_json_time_format strftime("%Y-%m-%d") else strftime("%Y/%m/%d") end end |
#beginning_of_day ⇒ Object Also known as: midnight, at_midnight, at_beginning_of_day
Converts Date to a Time (or DateTime if necessary) with the time portion set to the beginning of the day (0:00)
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# File 'activesupport/lib/active_support/core_ext/date/calculations.rb', line 74 def beginning_of_day to_time_in_current_zone end |
#beginning_of_month ⇒ Object Also known as: at_beginning_of_month
Returns a new ; DateTime objects will have time set to 0:00DateTime representing the start of the month (1st of the month; DateTime objects will have time set to 0:00)
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# File 'activesupport/lib/active_support/core_ext/date/calculations.rb', line 208 def beginning_of_month self.acts_like?(:time) ? change(:day => 1, :hour => 0) : change(:day => 1) end |
#beginning_of_quarter ⇒ Object Also known as: at_beginning_of_quarter
Returns a new Date/DateTime representing the start of the quarter (1st of january, april, july, october; DateTime objects will have time set to 0:00)
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# File 'activesupport/lib/active_support/core_ext/date/calculations.rb', line 221 def beginning_of_quarter beginning_of_month.change(:month => [10, 7, 4, 1].detect { |m| m <= self.month }) end |
#beginning_of_week ⇒ Object Also known as: monday, at_beginning_of_week
Returns a new Date/DateTime representing the “start” of this week (i.e, Monday; DateTime objects will have time set to 0:00).
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# File 'activesupport/lib/active_support/core_ext/date/calculations.rb', line 178 def beginning_of_week days_to_monday = self.wday!=0 ? self.wday-1 : 6 result = self - days_to_monday self.acts_like?(:time) ? result.midnight : result end |
#beginning_of_year ⇒ Object Also known as: at_beginning_of_year
Returns a new Date/DateTime representing the start of the year (1st of january; DateTime objects will have time set to 0:00)
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# File 'activesupport/lib/active_support/core_ext/date/calculations.rb', line 233 def beginning_of_year self.acts_like?(:time) ? change(:month => 1, :day => 1, :hour => 0) : change(:month => 1, :day => 1) end |
#change(options) ⇒ Object
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# File 'activesupport/lib/active_support/core_ext/date/calculations.rb', line 124 def change() ::Date.new( [:year] || self.year, [:month] || self.month, [:day] || self.day ) end |
#end_of_day ⇒ Object
Converts Date to a Time (or DateTime if necessary) with the time portion set to the end of the day (23:59:59)
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# File 'activesupport/lib/active_support/core_ext/date/calculations.rb', line 82 def end_of_day to_time_in_current_zone.end_of_day end |
#end_of_month ⇒ Object Also known as: at_end_of_month
Returns a new Date/DateTime representing the end of the month (last day of the month; DateTime objects will have time set to 0:00)
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# File 'activesupport/lib/active_support/core_ext/date/calculations.rb', line 214 def end_of_month last_day = ::Time.days_in_month( self.month, self.year ) self.acts_like?(:time) ? change(:day => last_day, :hour => 23, :min => 59, :sec => 59) : change(:day => last_day) end |
#end_of_quarter ⇒ Object Also known as: at_end_of_quarter
Returns a new Date/DateTime representing the end of the quarter (last day of march, june, september, december; DateTime objects will have time set to 23:59:59)
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# File 'activesupport/lib/active_support/core_ext/date/calculations.rb', line 227 def end_of_quarter beginning_of_month.change(:month => [3, 6, 9, 12].detect { |m| m >= self.month }).end_of_month end |
#end_of_week ⇒ Object Also known as: sunday, at_end_of_week
Returns a new Date/DateTime representing the end of this week (Sunday, DateTime objects will have time set to 23:59:59).
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# File 'activesupport/lib/active_support/core_ext/date/calculations.rb', line 187 def end_of_week days_to_sunday = self.wday!=0 ? 7-self.wday : 0 result = self + days_to_sunday.days self.acts_like?(:time) ? result.end_of_day : result end |
#end_of_year ⇒ Object Also known as: at_end_of_year
Returns a new Time representing the end of the year (31st of december; DateTime objects will have time set to 23:59:59)
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# File 'activesupport/lib/active_support/core_ext/date/calculations.rb', line 239 def end_of_year self.acts_like?(:time) ? change(:month => 12, :day => 31, :hour => 23, :min => 59, :sec => 59) : change(:month => 12, :day => 31) end |
#future? ⇒ Boolean
Returns true if the Date object’s date lies in the future.
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# File 'activesupport/lib/active_support/core_ext/date/calculations.rb', line 56 def future? self > ::Date.current end |
#iso8601 ⇒ Object Also known as: rfc3339
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# File 'activesupport/lib/active_support/core_ext/date/conversions.rb', line 97 def iso8601 strftime('%F') end |
#minus_with_duration(other) ⇒ Object Also known as: -
:nodoc:
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# File 'activesupport/lib/active_support/core_ext/date/calculations.rb', line 96 def minus_with_duration(other) #:nodoc: if ActiveSupport::Duration === other plus_with_duration(-other) else minus_without_duration(other) end end |
#months_ago(months) ⇒ Object
Returns a new Date/DateTime representing the time a number of specified months ago.
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# File 'activesupport/lib/active_support/core_ext/date/calculations.rb', line 138 def months_ago(months) advance(:months => -months) end |
#months_since(months) ⇒ Object
Returns a new Date/DateTime representing the time a number of specified months in the future.
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# File 'activesupport/lib/active_support/core_ext/date/calculations.rb', line 143 def months_since(months) advance(:months => months) end |
#next_month ⇒ Object
Shorthand for months_since(1)
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# File 'activesupport/lib/active_support/core_ext/date/calculations.rb', line 173 def next_month months_since(1) end |
#next_week(day = :monday) ⇒ Object
Returns a new Date/DateTime representing the start of the given day in next week (default is Monday).
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# File 'activesupport/lib/active_support/core_ext/date/calculations.rb', line 202 def next_week(day = :monday) result = (self + 7).beginning_of_week + DAYS_INTO_WEEK[day] self.acts_like?(:time) ? result.change(:hour => 0) : result end |
#next_year ⇒ Object
Shorthand for years_since(1)
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# File 'activesupport/lib/active_support/core_ext/date/calculations.rb', line 163 def next_year years_since(1) end |
#past? ⇒ Boolean
Returns true if the Date object’s date lies in the past. Otherwise returns false.
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# File 'activesupport/lib/active_support/core_ext/date/calculations.rb', line 46 def past? self < ::Date.current end |
#plus_with_duration(other) ⇒ Object Also known as: +
:nodoc:
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# File 'activesupport/lib/active_support/core_ext/date/calculations.rb', line 86 def plus_with_duration(other) #:nodoc: if ActiveSupport::Duration === other other.since(self) else plus_without_duration(other) end end |
#prev_month ⇒ Object
Shorthand for months_ago(1)
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# File 'activesupport/lib/active_support/core_ext/date/calculations.rb', line 168 def prev_month months_ago(1) end |
#prev_week(day = :monday) ⇒ Object
Returns a new Date/DateTime representing the start of the given day in the previous week (default is Monday).
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# File 'activesupport/lib/active_support/core_ext/date/calculations.rb', line 196 def prev_week(day = :monday) result = (self - 7).beginning_of_week + DAYS_INTO_WEEK[day] self.acts_like?(:time) ? result.change(:hour => 0) : result end |
#prev_year ⇒ Object
Shorthand for years_ago(1)
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# File 'activesupport/lib/active_support/core_ext/date/calculations.rb', line 158 def prev_year years_ago(1) end |
#readable_inspect ⇒ Object Also known as: inspect
Overrides the default inspect method with a human readable one, e.g., “Mon, 21 Feb 2005”
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# File 'activesupport/lib/active_support/core_ext/date/conversions.rb', line 60 def readable_inspect strftime("%a, %d %b %Y") end |
#since(seconds) ⇒ Object Also known as: in
Converts Date to a Time (or DateTime if necessary) with the time portion set to the beginning of the day (0:00) and then adds the specified number of seconds
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# File 'activesupport/lib/active_support/core_ext/date/calculations.rb', line 68 def since(seconds) to_time_in_current_zone.since(seconds) end |
#to_date ⇒ Object
A method to keep Time, Date and DateTime instances interchangeable on conversions. In this case, it simply returns self
.
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# File 'activesupport/lib/active_support/core_ext/date/conversions.rb', line 68 def to_date self end |
#to_datetime ⇒ Object
Converts a Date instance to a DateTime, where the time is set to the beginning of the day and UTC offset is set to 0.
Examples
date = Date.new(2007, 11, 10) # => Sat, 10 Nov 2007
date.to_datetime # => Sat, 10 Nov 2007 00:00:00 0000
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# File 'activesupport/lib/active_support/core_ext/date/conversions.rb', line 93 def to_datetime ::DateTime.civil(year, month, day, 0, 0, 0, 0) end |
#to_formatted_s(format = :default) ⇒ Object Also known as: to_s
Convert to a formatted string. See DATE_FORMATS for predefined formats.
This method is aliased to to_s
.
Examples
date = Date.new(2007, 11, 10) # => Sat, 10 Nov 2007
date.to_formatted_s(:db) # => "2007-11-10"
date.to_s(:db) # => "2007-11-10"
date.to_formatted_s(:short) # => "10 Nov"
date.to_formatted_s(:long) # => "November 10, 2007"
date.to_formatted_s(:long_ordinal) # => "November 10th, 2007"
date.to_formatted_s(:rfc822) # => "10 Nov 2007"
Adding your own time formats to to_formatted_s
You can add your own formats to the Date::DATE_FORMATS hash. Use the format name as the hash key and either a strftime string or Proc instance that takes a date argument as the value.
# config/initializers/time_formats.rb
Date::DATE_FORMATS[:month_and_year] = "%B %Y"
Date::DATE_FORMATS[:short_ordinal] = lambda { |date| date.strftime("%B #{date.day.ordinalize}") }
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# File 'activesupport/lib/active_support/core_ext/date/conversions.rb', line 45 def to_formatted_s(format = :default) if formatter = DATE_FORMATS[format] if formatter.respond_to?(:call) formatter.call(self).to_s else strftime(formatter) end else to_default_s end end |
#to_time(form = :local) ⇒ Object
Converts a Date instance to a Time, where the time is set to the beginning of the day. The timezone can be either :local or :utc (default :local).
Examples
date = Date.new(2007, 11, 10) # => Sat, 10 Nov 2007
date.to_time # => Sat Nov 10 00:00:00 0800 2007
date.to_time(:local) # => Sat Nov 10 00:00:00 0800 2007
date.to_time(:utc) # => Sat Nov 10 00:00:00 UTC 2007
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# File 'activesupport/lib/active_support/core_ext/date/conversions.rb', line 82 def to_time(form = :local) ::Time.send("#{form}_time", year, month, day) end |
#to_time_in_current_zone ⇒ Object
Converts Date to a TimeWithZone in the current zone if Time.zone or Time.zone_default is set, otherwise converts Date to a Time via Date#to_time
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# File 'activesupport/lib/active_support/core_ext/date/zones.rb', line 7 def to_time_in_current_zone if ::Time.zone ::Time.zone.local(year, month, day) else to_time end end |
#today? ⇒ Boolean
Returns true if the Date object’s date is today.
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# File 'activesupport/lib/active_support/core_ext/date/calculations.rb', line 51 def today? self.to_date == ::Date.current # we need the to_date because of DateTime end |
#tomorrow ⇒ Object
Convenience method which returns a new Date/DateTime representing the time 1 day since the instance time
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# File 'activesupport/lib/active_support/core_ext/date/calculations.rb', line 250 def tomorrow self + 1 end |
#weeks_ago(weeks) ⇒ Object
Returns a new Date/DateTime representing the time a number of specified weeks ago.
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# File 'activesupport/lib/active_support/core_ext/date/calculations.rb', line 133 def weeks_ago(weeks) advance(:weeks => -weeks) end |
#xmlschema ⇒ Object
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# File 'activesupport/lib/active_support/core_ext/date/conversions.rb', line 103 def xmlschema to_time_in_current_zone.xmlschema end |
#years_ago(years) ⇒ Object
Returns a new Date/DateTime representing the time a number of specified years ago.
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# File 'activesupport/lib/active_support/core_ext/date/calculations.rb', line 148 def years_ago(years) advance(:years => -years) end |
#years_since(years) ⇒ Object
Returns a new Date/DateTime representing the time a number of specified years in the future.
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# File 'activesupport/lib/active_support/core_ext/date/calculations.rb', line 153 def years_since(years) advance(:years => years) end |
#yesterday ⇒ Object
Convenience method which returns a new Date/DateTime representing the time 1 day ago
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# File 'activesupport/lib/active_support/core_ext/date/calculations.rb', line 245 def yesterday self - 1 end |