ruby-rails example code?

[dthompson]

Does anyone have a sample rails demonstration application to share?
I am intrigued by ruby on rails but don't have the knowledge to implement an IceRuby example. I have a great demo database server which is based upon the demo/Ice/session example. The corresponding IceRuby demo client slightly modified lets me see the power of Ruby.
What I can't get a handle on is how rails would create and maintain the connections through the proxy objects, and how effective or ineffective this would be.
This would great help in making the decision about the web client development environment.

[Andreas Scherer]

Originally Posted by dthompson

Does anyone have a sample rails demonstration application to share?

Not a full-blown Rails application, just a tiny example how one could cobble together some demo:

Assuming that you have the Ice demo tarball, you can start as follows:

(1) Create a new Rails application: rails Ice
(2) Copy "demo/book/printer/Printer.ice" to "Ice/public/Printer.ice"
(3) Create a Rails controller: ./script/generate controller Ice ping
(4) Edit "app/helpers/ice_helper.rb" to make it wrap the Ice::Application, resp. the Printer proxy

require 'Ice'

Ice::loadSlice(File.join([File.dirname(__FILE__),'..', '..', 'public'],'Printer.ice'))

module IceHelper
  class Client < Ice::Application
    def run(args)
        printer = Demo::PrinterPrx::checkedCast(
          Ice::Application::communicator().stringToProxy(
            "SimplePrinter:default -p 10000"))
        if not printer
          puts $0 + ": invalid proxy"
          return false
      end

      printer.printString("Hello World!")
  
      return true
    end
  end
end

(5) Invoke the Proxy in "app/controllers/ice_controller.rb"

class IceController < ApplicationController

  def ping
    IceHelper::Client.new().main(ARGV)
  end

end

(6) Start the web server: ./script/server
(7) Start the "Printer" server, e.g., the C++ version: "demo/book/printer/server"
(8) Open http://localhost:3000/ice/ping

Take care,
Andreas

[dthompson]

Thanks Andreas. This will be great for me to get started. I think I can learn enough from this example to adapt to my specific sample ap.

Don