From https://once.com/writebook

app/models/user/role.rb

@@ -0,0 +1,11 @@
+module User::Role
+  extend ActiveSupport::Concern
+
+  included do
+    enum :role, %i[ member administrator ], default: :member
+  end
+
+  def can_administer?
+    administrator?
+  end
+end