Ruby on rails Ransack-深度关联排序链接不'；行不通

我正在尝试使用Ransack对列进行排序，但运气不好

模型应用

class Application < ActiveRecord::Base
  has_many :orders
end

控制器搜索操作：

@search = Application.includes(:group).search(search_params)
@applications = @search.result.paginate(pagination_params)

生成的SQL:

SELECT `applications`.* FROM `applications` LEFT OUTER JOIN `orders` ON `orders`.`application_id` = `applications`.`id` LEFT OUTER JOIN `groups` ON `groups`.`id` = `orders`.`executor_group_id` ORDER BY `groups`.`name` DESC LIMIT 20 OFFSET 0

所以，我想按执行器组名对应用程序进行排序，但执行器组属于order，它属于应用程序。 应用程序->订单->执行者组（组）

有人能帮我吗？有可能按这种深层次的关系来分类吗？ 谢谢

sort_link(search, :orders_executor_user_last_name, translation)

@search = Application.includes(:group).search(search_params)
@applications = @search.result.paginate(pagination_params)

SELECT `applications`.* FROM `applications` LEFT OUTER JOIN `orders` ON `orders`.`application_id` = `applications`.`id` LEFT OUTER JOIN `groups` ON `groups`.`id` = `orders`.`executor_group_id` ORDER BY `groups`.`name` DESC LIMIT 20 OFFSET 0