Require all files in sub-directory

Question

I have the following directory tree.

- app.rb
- folder/
  - one/
    - one.rb
  - two/
    - two.rb

I want to be able to load Ruby files in the folder/ directory, even the ones in the sub-directories. How would I do so?

Answer 1

Jekyll does something similar with its plugins. Something like this should do the trick:

    Dir[File.join(".", "**/*.rb")].each do |f|
      require f
    end

Answer 2

With less code, but still working on Linux, OS X and Windows:

Dir['./**/*.rb'].each{ |f| require f }

The '.' is needed for Ruby 1.9.2 where the current directory is no longer part of the path.