Recursively including all model subdirectories
this should be helpful
Dir["#{config.root}/app/models/**/","#{config.root}/lib/**/"]
enjoy! (:
Update:
Excellent question, posting example above i have simply referred to my recent project.
After making some tests, better understanding comes to me and it is great.
The main difference is of course neither in join method of File not config.root / Rails.root
Trailing '/' after '**' makes sense.
First one talks to match only directories when globbing. Second one talks do it recursively.
In your case this one could be also appropriate
Dir[ Rails.root.join('app', 'models', '**/') ]