Add user admin

app/controllers/admin/base_controller.rb

@@ -0,0 +1,14 @@
+module Admin
+  class BaseController < ApplicationController
+    before_action :require_admin
+
+    private
+
+    def require_admin
+      user = Current.session&.user
+      unless user&.admin?
+        redirect_to root_path, alert: "You must be an administrator to access this page."
+      end
+    end
+  end
+end