I have an action that takes a long time. I want to be able to provide updates during the process so the user is not confused as to whether he lost the connection or something. Can I do something like this:

class HeavyLiftingController < ApplicationController
  def data_mine
    render_update :js=>"alert('Just starting!')"
    # do some complicated find etc.
    render_update :js=>"alert('Found the records!')"
    # do some processing ...
    render_update :js=>"alert('Done processig')"
    # send @results to view
  end
end