+++ /dev/null
-module ActiveSupport #:nodoc:
- module CoreExtensions #:nodoc:
- module Date #:nodoc:
- # Enables the use of time calculations within Time itself
- module Calculations
- def self.included(base) #:nodoc:
- base.extend ClassMethods
-
- base.instance_eval do
- alias_method :plus_without_duration, :+
- alias_method :+, :plus_with_duration
-
- alias_method :minus_without_duration, :-
- alias_method :-, :minus_with_duration
- end
- end
-
- module ClassMethods
- # Returns a new Date representing the date 1 day ago (i.e. yesterday's date).
- def yesterday
- ::Date.today.yesterday
- end
-
- # Returns a new Date representing the date 1 day after today (i.e. tomorrow's date).
- def tomorrow
- ::Date.today.tomorrow
- end
-
- # Returns Time.zone.today when config.time_zone is set, otherwise just returns Date.today.
- def current
- ::Time.zone_default ? ::Time.zone.today : ::Date.today
- end
- end
-
- # Tells whether the Date object's date lies in the past
- def past?
- self < ::Date.current
- end
-
- # Tells whether the Date object's date is today
- def today?
- self.to_date == ::Date.current # we need the to_date because of DateTime
- end
-
- # Tells whether the Date object's date lies in the future
- def future?
- self > ::Date.current
- end
-
- # 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
- def ago(seconds)
- to_time.since(-seconds)
- end
-
- # 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
- def since(seconds)
- to_time.since(seconds)
- end
- alias :in :since
-
- # Converts Date to a Time (or DateTime if necessary) with the time portion set to the beginning of the day (0:00)
- def beginning_of_day
- to_time
- end
- alias :midnight :beginning_of_day
- alias :at_midnight :beginning_of_day
- alias :at_beginning_of_day :beginning_of_day
-
- # Converts Date to a Time (or DateTime if necessary) with the time portion set to the end of the day (23:59:59)
- def end_of_day
- to_time.end_of_day
- end
-
- def plus_with_duration(other) #:nodoc:
- if ActiveSupport::Duration === other
- other.since(self)
- else
- plus_without_duration(other)
- end
- end
-
- def minus_with_duration(other) #:nodoc:
- if ActiveSupport::Duration === other
- plus_with_duration(-other)
- else
- minus_without_duration(other)
- end
- end
-
- # Provides precise Date calculations for years, months, and days. The +options+ parameter takes a hash with
- # any of these keys: <tt>:years</tt>, <tt>:months</tt>, <tt>:weeks</tt>, <tt>:days</tt>.
- def advance(options)
- d = self
- d = d >> options.delete(:years) * 12 if options[:years]
- d = d >> options.delete(:months) if options[:months]
- d = d + options.delete(:weeks) * 7 if options[:weeks]
- d = d + options.delete(:days) if options[:days]
- d
- end
-
- # Returns a new Date where one or more of the elements have been changed according to the +options+ parameter.
- #
- # Examples:
- #
- # Date.new(2007, 5, 12).change(:day => 1) # => Date.new(2007, 5, 1)
- # Date.new(2007, 5, 12).change(:year => 2005, :month => 1) # => Date.new(2005, 1, 12)
- def change(options)
- ::Date.new(
- options[:year] || self.year,
- options[:month] || self.month,
- options[:day] || self.day
- )
- end
-
- # Returns a new Date/DateTime representing the time a number of specified months ago
- def months_ago(months)
- advance(:months => -months)
- end
-
- # Returns a new Date/DateTime representing the time a number of specified months in the future
- def months_since(months)
- advance(:months => months)
- end
-
- # Returns a new Date/DateTime representing the time a number of specified years ago
- def years_ago(years)
- advance(:years => -years)
- end
-
- # Returns a new Date/DateTime representing the time a number of specified years in the future
- def years_since(years)
- advance(:years => years)
- end
-
- # Short-hand for years_ago(1)
- def last_year
- years_ago(1)
- end
-
- # Short-hand for years_since(1)
- def next_year
- years_since(1)
- end
-
- # Short-hand for months_ago(1)
- def last_month
- months_ago(1)
- end
-
- # Short-hand for months_since(1)
- def next_month
- months_since(1)
- end
-
- # Returns a new Date/DateTime representing the "start" of this week (i.e, Monday; DateTime objects will have time set to 0:00)
- 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
- alias :monday :beginning_of_week
- alias :at_beginning_of_week :beginning_of_week
-
- # Returns a new Date/DateTime representing the end of this week (Sunday, DateTime objects will have time set to 23:59:59)
- 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
- alias :at_end_of_week :end_of_week
-
- # Returns a new Date/DateTime representing the start of the given day in next week (default is Monday).
- def next_week(day = :monday)
- days_into_week = { :monday => 0, :tuesday => 1, :wednesday => 2, :thursday => 3, :friday => 4, :saturday => 5, :sunday => 6}
- result = (self + 7).beginning_of_week + days_into_week[day]
- self.acts_like?(:time) ? result.change(:hour => 0) : result
- end
-
- # 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)
- def beginning_of_month
- self.acts_like?(:time) ? change(:day => 1,:hour => 0, :min => 0, :sec => 0) : change(:day => 1)
- end
- alias :at_beginning_of_month :beginning_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)
- 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
- alias :at_end_of_month :end_of_month
-
- # 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)
- def beginning_of_quarter
- beginning_of_month.change(:month => [10, 7, 4, 1].detect { |m| m <= self.month })
- end
- alias :at_beginning_of_quarter :beginning_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)
- def end_of_quarter
- beginning_of_month.change(:month => [3, 6, 9, 12].detect { |m| m >= self.month }).end_of_month
- end
- alias :at_end_of_quarter :end_of_quarter
-
- # Returns a new Date/DateTime representing the start of the year (1st of january; DateTime objects will have time set to 0:00)
- def beginning_of_year
- self.acts_like?(:time) ? change(:month => 1, :day => 1, :hour => 0, :min => 0, :sec => 0) : change(:month => 1, :day => 1)
- end
- alias :at_beginning_of_year :beginning_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)
- 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
- alias :at_end_of_year :end_of_year
-
- # Convenience method which returns a new Date/DateTime representing the time 1 day ago
- def yesterday
- self - 1
- end
-
- # Convenience method which returns a new Date/DateTime representing the time 1 day since the instance time
- def tomorrow
- self + 1
- end
- end
- end
- end
-end
projects / feedcatcher.git / blobdiff