[Ruby] Rails のヴァージョン (Rails 3.0.9)

Rails::VERSION::STRING で参照できるみたい。

$ rails console

Loading development environment (Rails 3.0.9)

irb(main):001:0> Rails::VERSION.constants

=> [:MAJOR, :MINOR, :TINY, :PRE, :STRING]

irb(main):002:0> Rails::VERSION::STRING

=> "3.0.9"

irb(main):003:0> Rails::VERSION::MAJOR

=> 3

irb(main):004:0> Rails::VERSION::MINOR

=> 0

irb(main):005:0> Rails::VERSION::TINY

=> 9

irb(main):006:0> Rails::VERSION::PRE

=> nil

irb(main):007:0>