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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 <tt>Date.beginning_of_week</tt> has not been set for the current request, returns the week start specified in <tt>config.beginning_of_week</tt>.
# 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 <tt>Date.beginning_of_week</tt> 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 <tt>Time.zone</tt> or <tt>config.time_zone</tt> 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 middle of the day (12:00)
def middle_of_day
in_time_zone.middle_of_day
end
alias :midday :middle_of_day
alias :noon :middle_of_day
alias :at_midday :middle_of_day
alias :at_noon :middle_of_day
alias :at_middle_of_day :middle_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: <tt>:years</tt>, <tt>:months</tt>, <tt>:weeks</tt>, <tt>:days</tt>.
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: <tt>:year</tt>, <tt>:month</tt>, <tt>:day</tt>.
#
# 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
# Allow Date to be compared with Time by converting to DateTime and relying on the <=> from there.
def compare_with_coercion(other)
if other.is_a?(Time)
to_datetime <=> other
else
compare_without_coercion(other)
end
end
alias_method :compare_without_coercion, :<=>
alias_method :<=>, :compare_with_coercion
end
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