my-links/start/routes/admin.ts

import { middleware } from '#start/kernel';
import router from '@adonisjs/core/services/router';

const AdminController = () => import('#controllers/admin_controller');

/**
 * Routes for admin dashboard
 */
router
  .group(() => {
    router.get('/', [AdminController, 'index']).as('admin.dashboard');
  })
  .middleware([middleware.auth(), middleware.admin()])
  .prefix('/admin');