vendor/rails/railties/lib/rails/rack/debugger.rb

   1 module Rails
   2   module Rack
   3     class Debugger
   4       def initialize(app)
   5         @app = app
   6
   7         require_library_or_gem 'ruby-debug'
   8         ::Debugger.start
   9         ::Debugger.settings[:autoeval] = true if ::Debugger.respond_to?(:settings)
  10         puts "=> Debugger enabled"
  11       rescue Exception
  12         puts "You need to install ruby-debug to run the server in debugging mode. With gems, use 'gem install ruby-debug'"
  13         exit
  14       end
  15
  16       def call(env)
  17         @app.call(env)
  18       end
  19     end
  20   end
  21 end