--- /dev/null
+module ActiveSupport #:nodoc:
+ module CoreExtensions #:nodoc:
+ module Time #:nodoc:
+ # Converting times to formatted strings, dates, and datetimes.
+ module Conversions
+ DATE_FORMATS = {
+ :db => "%Y-%m-%d %H:%M:%S",
+ :number => "%Y%m%d%H%M%S",
+ :time => "%H:%M",
+ :short => "%d %b %H:%M",
+ :long => "%B %d, %Y %H:%M",
+ :long_ordinal => lambda { |time| time.strftime("%B #{time.day.ordinalize}, %Y %H:%M") },
+ :rfc822 => "%a, %d %b %Y %H:%M:%S %z"
+ }
+
+ def self.included(base) #:nodoc:
+ base.class_eval do
+ alias_method :to_default_s, :to_s
+ alias_method :to_s, :to_formatted_s
+ end
+ end
+
+ # Converts to a formatted string. See DATE_FORMATS for builtin formats.
+ #
+ # This method is aliased to <tt>to_s</tt>.
+ #
+ # time = Time.now # => Thu Jan 18 06:10:17 CST 2007
+ #
+ # time.to_formatted_s(:time) # => "06:10:17"
+ # time.to_s(:time) # => "06:10:17"
+ #
+ # time.to_formatted_s(:db) # => "2007-01-18 06:10:17"
+ # time.to_formatted_s(:number) # => "20070118061017"
+ # time.to_formatted_s(:short) # => "18 Jan 06:10"
+ # time.to_formatted_s(:long) # => "January 18, 2007 06:10"
+ # time.to_formatted_s(:long_ordinal) # => "January 18th, 2007 06:10"
+ # time.to_formatted_s(:rfc822) # => "Thu, 18 Jan 2007 06:10:17 -0600"
+ #
+ # == Adding your own time formats to +to_formatted_s+
+ # You can add your own formats to the Time::DATE_FORMATS hash.
+ # Use the format name as the hash key and either a strftime string
+ # or Proc instance that takes a time argument as the value.
+ #
+ # # config/initializers/time_formats.rb
+ # Time::DATE_FORMATS[:month_and_year] = "%B %Y"
+ # Time::DATE_FORMATS[:short_ordinal] = lambda { |time| time.strftime("%B #{time.day.ordinalize}") }
+ def to_formatted_s(format = :default)
+ return to_default_s unless formatter = DATE_FORMATS[format]
+ formatter.respond_to?(:call) ? formatter.call(self).to_s : strftime(formatter)
+ end
+
+ # Returns the UTC offset as an +HH:MM formatted string.
+ #
+ # Time.local(2000).formatted_offset # => "-06:00"
+ # Time.local(2000).formatted_offset(false) # => "-0600"
+ def formatted_offset(colon = true, alternate_utc_string = nil)
+ utc? && alternate_utc_string || utc_offset.to_utc_offset_s(colon)
+ end
+
+ # Converts a Time object to a Date, dropping hour, minute, and second precision.
+ #
+ # my_time = Time.now # => Mon Nov 12 22:59:51 -0500 2007
+ # my_time.to_date # => Mon, 12 Nov 2007
+ #
+ # your_time = Time.parse("1/13/2009 1:13:03 P.M.") # => Tue Jan 13 13:13:03 -0500 2009
+ # your_time.to_date # => Tue, 13 Jan 2009
+ def to_date
+ ::Date.new(year, month, day)
+ end
+
+ # A method to keep Time, Date and DateTime instances interchangeable on conversions.
+ # In this case, it simply returns +self+.
+ def to_time
+ self
+ end
+
+ # Converts a Time instance to a Ruby DateTime instance, preserving UTC offset.
+ #
+ # my_time = Time.now # => Mon Nov 12 23:04:21 -0500 2007
+ # my_time.to_datetime # => Mon, 12 Nov 2007 23:04:21 -0500
+ #
+ # your_time = Time.parse("1/13/2009 1:13:03 P.M.") # => Tue Jan 13 13:13:03 -0500 2009
+ # your_time.to_datetime # => Tue, 13 Jan 2009 13:13:03 -0500
+ def to_datetime
+ ::DateTime.civil(year, month, day, hour, min, sec, Rational(utc_offset, 86400))
+ end
+ end
+ end
+ end
+end