require 'active_support/core_ext/kernel/requires' module Rails module Rack class Debugger def initialize(app) @app = app ARGV.clear # clear ARGV so that rails server options aren't passed to IRB require_library_or_gem 'ruby-debug' ::Debugger.start ::Debugger.settings[:autoeval] = true if ::Debugger.respond_to?(:settings) puts "=> Debugger enabled" rescue Exception puts "You need to install ruby-debug to run the server in debugging mode. With gems, use 'gem install ruby-debug'" exit end def call(env) @app.call(env) end end end end