ldc-supportweb/app/Http/Controllers/SiteController.php

<?php

namespace App\Http\Controllers;

use App\Models\Site;
use Kwaadpepper\CrudPolicies\Http\Requests\CrudIndexRequest;
use Kwaadpepper\CrudPolicies\Traits\CrudController;

class SiteController extends Controller
{
    use CrudController {
        __construct as __CrudConstructor;
        index as crudIndex;
    }

    public function __construct()
    {
        parent::__construct();
        $this->__CrudConstructor();
        $this->authorizeResource(Site::class, 'site');
    }

    /** @var Site */
    public static $modelClass = Site::class;

    public static $layout = 'layout.app';

    public function index(CrudIndexRequest $request)
    {
        /** @var \Illuminate\View\View */
        $view = $this->crudIndex($request);
        if ($request->ajax()) {
            return $view;
        }
        return view('sites.index', $view->getData());
    }
}