$(document).ready(function() {
  $("#vehicle_journey_journey_pattern_id").change(
    function(){
      var vehicle_journey_journey_pattern_id = $("#vehicle_journey_journey_pattern_input select option:selected").attr("value");
      if (vehicle_journey_journey_pattern_id > 0) {
        var url = "#{referential_line_route_journey_patterns_path(@referential.id,@line.id,@route.id)}";
        url = url + "/" + vehicle_journey_journey_pattern_id +
                "/new_vehicle_journey";
        $.get(url);
      }
    }
  )
});