update_stop_points = () ->
  url = $('#routing_constraint_zone_route_id').attr("data-url")
  routing_constraint_zone_json = $('#routing_constraint_zone_route_id').attr("data-object")
  route_id = $('#routing_constraint_zone_route_id').val()
  $.ajax
    url: url
    dataType: 'script'
    data: { route_id: route_id, routing_constraint_zone_json: routing_constraint_zone_json }
    error:  (jqXHR, textStatus, errorThrown) ->
      console.log("ERROR")
    success: (data, textStatus, jqXHR) ->
      console.log("SUCCESS")

$ ->
  if $('#routing_constraint_zone_route_id').hasClass('new_routing_constraint_zone_route')
    $("#routing_constraint_zone_route_id").on 'change', -> update_stop_points()
    update_stop_points()