gistfile1.ru

 # run the rake task,
 $ rake debug
 Connected.

 # refresh a page in your browser, your app will break at debugger statements
 (rdb:1) p @user
 #<User id: 1, name: "David Dollar", email: "[email protected]", created_at: "..." >

class HelloWorld
def call(env)
[200, {"Content-Type" => "text/plain"}, ["Hello world!"]]
end
end