samp.ru

gistfile1.rb

require 'rack'

class App
  def call(env)
    to = Rack::Request.new(env).params["to"] || "World"
    body = Rack::Utils.escape_html(to)
    [200, {"Content-Type" => "text/html"}, [body]]
  end
end

class HelloMiddleware
  def initialize(app, opts)
    @app = app
    @msg = Rack::Utils.escape_html(opts[:message] || "Hello ")
  end

  def call(env)
    status, header, body = @app.call(env)
    [status, header, ["#{@msg} "] + body]
  end
end

use Rack::Lint

use HelloMiddleware, :message => "Good morning "
run App.new