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

<?php

namespace App\Http\Controllers;

use App\Models\File;
use Illuminate\Database\Eloquent\Builder;
use Kwaadpepper\CrudPolicies\Http\Requests\CrudIndexRequest;
use Kwaadpepper\CrudPolicies\Traits\CrudController;

class FileController extends Controller
{
    use CrudController {
        index as crudIndex;
        create as crudCreate;
    }

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

    public static $layout = 'layout.app';

    public function indexQuery(Builder $query): Builder
    {
        $parent = request()->site ?? request()->project;
        if ($parent) {
            $query->whereHasMorph('parent', [get_class($parent)], function ($q) use ($parent) {
                return $q->whereId($parent->id);
            });
        }
        return $query;
    }

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

    public function create(CrudIndexRequest $request)
    {
        /** @var \Illuminate\View\View */
        $view = $this->crudCreate($request);
        return view('files.create', $view->getData());
    }

    public function storeModel(File &$file)
    {
        $file->parent()->associate(request()->site ?? request()->project);
    }
}