jrubyfx.rb

# main.rb
class Foo < JrubyFX::Application
  def start(stage)

     lbl1 = label "Insert your client number"
     txt1 = text_field
     btn1 = button "OK"

     btn1.set_on_action  do |e|
       # active record objects
       Posts.all.each do |post|
         MyController.load_into(stage,:initialize=>[:client_id=>txt1.text.to_s,
           :post=>post])
       end
     end

     pane = vbox 10
     pane.add lbl1
     pane.add txt1
     pane.add btn1
     pane.set_alignment(Pos::CENTER)
     scene1 = scene(pane,250,150)
     stage.scene = scene1
     stage.title = "Foobar"
     stage.show
 end
end

Foo::launch


### my controller
class MyController
include JRubyFX::Controller

  def initialize(args)
   # get the post and client_id
    ...
  end

  on :button_clicked do |e|
    # the data was edited, reviewed, whatever and the user want to get the next
    # object being iterated on start method
  end
end