jruby.fx

class Foo < JrubyFX::Application
   def start(stage)
    Post.all.each do |p|
     MyController.load_into(:initialize=>[p])
    end
    stage.show
   end
end

Foo::launch


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

  def initialize(args)
   ...
  end

  on :button_clicked
    # go back to the start and let it get the next post object, and load the controller again
  end
end