collection_action :load_overviewtree_as_json do
    if params[:root_id].present?
      objects = Goldencobra::Setting.where(id: params[:root_id]).first.children.reorder(:title)
      objects_for_cache_key = Goldencobra::Setting.where(id: params[:root_id]).first.descendants.reorder(:title)
      cache_key ||= ["settings", params[:root_id], objects_for_cache_key.map(&:id), objects_for_cache_key.maximum(:updated_at)]