require "date" require "active_support/inflector/methods" require "active_support/core_ext/date/zones" require "active_support/core_ext/module/remove_method" class Date DATE_FORMATS = { short: "%d %b", long: "%B %d, %Y", db: "%Y-%m-%d", number: "%Y%m%d", long_ordinal: lambda { |date| day_format = ActiveSupport::Inflector.ordinalize(date.day) date.strftime("%B #{day_format}, %Y") # => "April 25th, 2007" }, rfc822: "%d %b %Y", iso8601: lambda { |date| date.iso8601 } } # Ruby 1.9 has Date#to_time which converts to localtime only. remove_method :to_time # Ruby 1.9 has Date#xmlschema which converts to a string without the time # component. This removal may generate an issue on FreeBSD, that's why we # need to use remove_possible_method here remove_possible_method :xmlschema # Convert to a formatted string. See DATE_FORMATS for predefined formats. # # This method is aliased to to_s. # # 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(:number) # => "20071110" # 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" # date.to_formatted_s(:iso8601) # => "2007-11-10" # # == Adding your own date 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/date_formats.rb # Date::DATE_FORMATS[:month_and_year] = '%B %Y' # Date::DATE_FORMATS[:short_ordinal] = ->(date) { date.strftime("%B #{date.day.ordinalize}") } 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 alias_method :to_default_s, :to_s alias_method :to_s, :to_formatted_s # Overrides the default inspect method with a human readable one, e.g., "Mon, 21 Feb 2005" def readable_inspect strftime("%a, %d %b %Y") end alias_method :default_inspect, :inspect alias_method :inspect, :readable_inspect # 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). # # date = Date.new(2007, 11, 10) # => Sat, 10 Nov 2007 # # date.to_time # => 2007-11-10 00:00:00 0800 # date.to_time(:local) # => 2007-11-10 00:00:00 0800 # # date.to_time(:utc) # => 2007-11-10 00:00:00 UTC def to_time(form = :local) raise ArgumentError, "Expected :local or :utc, got #{form.inspect}." unless [:local, :utc].include?(form) ::Time.send(form, year, month, day) end # Returns a string which represents the time in used time zone as DateTime # defined by XML Schema: # # date = Date.new(2015, 05, 23) # => Sat, 23 May 2015 # date.xmlschema # => "2015-05-23T00:00:00+04:00" def xmlschema in_time_zone.xmlschema end end