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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
# 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)
to_time_in_current_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)
to_time_in_current_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
to_time_in_current_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
to_time_in_current_zone.end_of_day
end
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
end
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