ActiveSupport | ordinal

概要

ordinal

詳細

ordinal について

ordinal

序数のサフィックスを取得します。

サンプル

# encoding: utf-8
require 'active_support/core_ext/integer/inflections'
require 'tbpgr_utils'

bulk_puts_eval binding, <<-EOS
1.ordinal
2.ordinal
3.ordinal
4.ordinal
EOS

__END__
・下記はTbpgrUtils gemの機能
bulk_puts_eval

https://rubygems.org/gems/tbpgr_utils
https://github.com/tbpgr/tbpgr_utils

出力

1.ordinal # => "st"
2.ordinal # => "nd"
3.ordinal # => "rd"
4.ordinal # => "th"

参照

http://guides.rubyonrails.org/active_support_core_extensions.html#ordinal
https://github.com/rails/rails/blob/master/activesupport/lib/active_support/inflector/methods.rb