require "active_support/inflector/methods" require "active_support/values/time_zone" class Time DATE_FORMATS = { db: "%Y-%m-%d %H:%M:%S", number: "%Y%m%d%H%M%S", nsec: "%Y%m%d%H%M%S%9N", usec: "%Y%m%d%H%M%S%6N", time: "%H:%M", short: "%d %b %H:%M", long: "%B %d, %Y %H:%M", long_ordinal: lambda { |time| day_format = ActiveSupport::Inflector.ordinalize(time.day) time.strftime("%B #{day_format}, %Y %H:%M") }, rfc822: lambda { |time| offset_format = time.formatted_offset(false) time.strftime("%a, %d %b %Y %H:%M:%S #{offset_format}") }, iso8601: lambda { |time| time.iso8601 } } # Converts to a formatted string. See DATE_FORMATS for built-in formats. # # This method is aliased to to_s. # # time = Time.now # => 2007-01-18 06:10:17 -06:00 # # time.to_formatted_s(:time) # => "06:10" # time.to_s(:time) # => "06:10" # # 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" # time.to_formatted_s(:iso8601) # => "2007-01-18T06:10:17-06:00" # # == 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] = ->(time) { time.strftime("%B #{time.day.ordinalize}") } def to_formatted_s(format = :default) if formatter = DATE_FORMATS[format] formatter.respond_to?(:call) ? formatter.call(self).to_s : strftime(formatter) else to_default_s end end alias_method :to_default_s, :to_s alias_method :to_s, :to_formatted_s # Returns a formatted string of the offset from UTC, or an alternative # string if the time zone is already UTC. # # 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 || ActiveSupport::TimeZone.seconds_to_utc_offset(utc_offset, colon) end end