@RequestMapping(method = RequestMethod.GET)
  public String setupForm(@PathVariable("id") String id, Model model) {
    LiveActivityGroup group = activityRepository.getLiveActivityGroupById(id);
    LiveActivityGroupForm form = new LiveActivityGroupForm();
    form.copyLiveActivityGroup(group);

    model.addAttribute("form", form);
    model.addAttribute("id", id);

    addGlobalModelItems(model);

    addNeededEntities(model);

    return "liveactivitygroup/LiveActivityGroupEdit";
  }