julik · February 29, 2012 18:26 · Feb 29, 2012 · Feb 29, 2012 · Feb 29, 2012
diff --git a/config.ru b/config.ru
@@ -13,7 +13,7 @@ class MyApp < Rails::Application
   end
 
   # Let's shrink the stack by removing some middlewares.
-  # The remaining stack is printed below.
+  # The remaining stack is printed below. Add or remove stuff at will.
   config.middleware.delete "ActionDispatch::Static"
   config.middleware.delete "Rack::Lock"
   config.middleware.delete "Rack::MethodOverride"

diff --git a/config.ru b/config.ru
@@ -0,0 +1,53 @@
+# Run this file with `RAILS_ENV=production rackup -p 3000 -s thin`
+# Be sure to have rails and thin installed.
+require "rubygems"
+require "rails"
+
+# Let's load only action controller. If you want
+# to use active record, just require it as well.
+require "action_controller/railtie"
+
+class MyApp < Rails::Application
+  routes.append do
+    match "/hello/world" => "hello#world"
+  end
+
+  # Let's shrink the stack by removing some middlewares.
+  # The remaining stack is printed below.
+  config.middleware.delete "ActionDispatch::Static"
+  config.middleware.delete "Rack::Lock"
+  config.middleware.delete "Rack::MethodOverride"
+  config.middleware.delete "Rails::Rack::Logger"
+  config.middleware.delete "ActionDispatch::DebugExceptions"
+  config.middleware.delete "ActionDispatch::RequestId"
+  config.middleware.delete "ActionDispatch::RemoteIp"
+  config.middleware.delete "ActionDispatch::Reloader"
+  config.middleware.delete "ActionDispatch::Flash"
+  config.middleware.delete "ActionDispatch::BestStandardsSupport"
+
+  # We need a secret token for session, cookies, etc.
+  config.secret_token = "49837489qkuweoiuoqwehisuakshdjksadhaisdy78o34y138974xyqp9rmye8yrpiokeuioqwzyoiuxftoyqiuxrhm3iou1hrzmjk"
+end
+
+# This is a barebone controller. Include the modules you want, more info here:
+# http://piotrsarnacki.com/2010/12/12/lightweight-controllers-with-rails3/
+class HelloController < ActionController::Metal
+  include ActionController::Rendering
+
+  def world
+    render :text => "Hello world!"
+  end
+end
+
+# Initialize the app
+MyApp.initialize!
+
+# Print the stack for fun!
+puts ">> Starting Rails lightweight stack"
+Rails.configuration.middleware.each do |middleware|
+  puts "use #{middleware.inspect}"
+end
+puts "run #{Rails.application.class.name}.routes"
+
+# Run it!
+run MyApp