Rack::Redirect

redirect.rb

module Rack
  class Redirect
    def initialize(app)
      @app = app
    end
    
    def redirect(location)
      [301, {'Location' => location, 'Content-Type' => 'text/html'}, ['Moved Permanently']]
    end
    
    def call(env)
      redirects = { “/obsolete-page” => “/new-page” }
      req = Rack::Request.new(env)
      
      return redirect(redirects[req.path]) if redirects.include?(req.path)

      @app.call(env)
    end
  end
end