disable_form_button.js.coffee

  $('.ajax_save').click (e) ->
    e.preventDefault()
    $('form').submit() #data-remote is set to true on the form on page load
    $('form').attr('action', $('form').data('update-url'))

  $('.postback_save').click (e) ->
    e.preventDefault()
    $('form').removeAttr('data-remote') #on the form on page load
    $("form").removeData("remote") #because it's cached
    $('form').submit()