module ActiveAdmin::BatchActions::ResourceExtension

def add_default_batch_action
  destroy_options = {
    priority: 100,
    confirm: proc { I18n.t('active_admin.batch_actions.delete_confirmation', plural_model: active_admin_config.plural_resource_label.downcase) },
    if: proc { controller.action_methods.include?('destroy') && authorized?(ActiveAdmin::Auth::DESTROY, active_admin_config.resource_class) }
  }
  add_batch_action :destroy, proc { I18n.t('active_admin.delete') }, destroy_options do |selected_ids|
    batch_action_collection.find(selected_ids).each do |record|
      authorize! ActiveAdmin::Auth::DESTROY, record
      destroy_resource(record)
    end
    redirect_to active_admin_config.route_collection_path(params),
                notice: I18n.t("active_admin.batch_actions.succesfully_destroyed",
                                  count: selected_ids.count,
                                  model: active_admin_config.resource_label.downcase,
                                  plural_model: active_admin_config.plural_resource_label(count: selected_ids.count).downcase)
  end
end