require 'date' require 'active_support/duration' require 'active_support/core_ext/object/acts_like' require 'active_support/core_ext/date/zones' require 'active_support/core_ext/time/zones' require 'active_support/core_ext/date_and_time/calculations' class Date include DateAndTime::Calculations class << self attr_accessor :beginning_of_week_default # Returns the week start (e.g. :monday) for the current request, if this has been set (via Date.beginning_of_week=). # If Date.beginning_of_week has not been set for the current request, returns the week start specified in config.beginning_of_week. # If no config.beginning_of_week was specified, returns :monday. def beginning_of_week Thread.current[:beginning_of_week] || beginning_of_week_default || :monday end # Sets Date.beginning_of_week to a week start (e.g. :monday) for current request/thread. # # This method accepts any of the following day symbols: # :monday, :tuesday, :wednesday, :thursday, :friday, :saturday, :sunday def beginning_of_week=(week_start) Thread.current[:beginning_of_week] = find_beginning_of_week!(week_start) end # Returns week start day symbol (e.g. :monday), or raises an ArgumentError for invalid day symbol. def find_beginning_of_week!(week_start) raise ArgumentError, "Invalid beginning of week: #{week_start}" unless ::Date::DAYS_INTO_WEEK.key?(week_start) week_start end # Returns a new Date representing the date 1 day ago (i.e. yesterday's date). def yesterday ::Date.current.yesterday end # Returns a new Date representing the date 1 day after today (i.e. tomorrow's date). def tomorrow ::Date.current.tomorrow end # Returns Time.zone.today when Time.zone or config.time_zone are set, otherwise just returns Date.today. def current ::Time.zone ? ::Time.zone.today : ::Date.today end 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) in_time_zone.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) in_time_zone.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 in_time_zone 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 in_time_zone.end_of_day end alias :at_end_of_day :end_of_day def plus_with_duration(other) #:nodoc: if ActiveSupport::Duration === other other.since(self) else plus_without_duration(other) end end alias_method :plus_without_duration, :+ alias_method :+, :plus_with_duration def minus_with_duration(other) #:nodoc: if ActiveSupport::Duration === other plus_with_duration(-other) else minus_without_duration(other) end end alias_method :minus_without_duration, :- alias_method :-, :minus_with_duration # Provides precise Date calculations for years, months, and days. The +options+ parameter takes a hash with # any of these keys: :years, :months, :weeks, :days. def advance(options) options = options.dup 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. # The +options+ parameter is a hash with a combination of these keys: :year, :month, :day. # # 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.fetch(:year, year), options.fetch(:month, month), options.fetch(:day, day) ) end end