Exclude some columns on ActiveAdmin

Apps.rb

ActiveAdmin.register App do
  ActionController::Parameters.permit_all_parameters = true
  menu priority: 6, label: "Uygulamalar"

   index do
     selectable_column
     excluded = ["app_image","updated_at","domain_id"]
     (App.column_names - excluded).each do |c|
       column c.to_sym
     end

     column :domain, sortable: true do | item |
       item.domain # this could be any attribute attached to the order_item table
     end
     actions
   end
end