ActiveAdmin.register AdminUser do permit_params :email, :password, :password_confirmation index do selectable_column id_column column :email column :current_sign_in_at column :sign_in_count column :created_at actions end filter :email filter :current_sign_in_at filter :sign_in_count filter :created_at form do |f| f.inputs do f.input :email f.input :password f.input :password_confirmation end f.actions end end