Railsのコンソールをより便利にするpry-rails gem ref: http://qiita.com/yaotti/items/c6e850010f36acedb0e1

file0.txt

[1] pry(main)> show-middleware
use Raven::Rack
use ActionDispatch::Static
use Rack::Lock
use ActiveSupport::Cache::Strategy::LocalCache
...

file1.txt

[2] pry(main)> show-model Item
Item
  id: integer
  created_at: datetime
  updated_at: datetime
  ...
  belongs_to :user
  has_many :comments
  ...

file2.txt

[1] pry(main)> recognize-path '/advent-calendar/2013'
{:action=>"index", :controller=>"advent_calendars", :year=>"2013"}