Laravelで請求書PDFを生成するにはどうすればよいですか?

composer create-project laravel/laravel example-app

php artisan make:controller InvoiceController

<?php
namespace App\Http\Controllers;

use Illuminate\Http\Request;
use Barryvdh\DomPDF\Facade\Pdf;



class InvoiceController extends Controller
{

    /**
     * Write code on Method
     *
     * @return response()
     */

    public function index(Request $request)

    {

        $data = [
            [

                'quantity' => 2,
                'description' => 'Gold',
                'price' => '0.00'

            ],

            [

                'quantity' => 3,
                'description' => 'Silver',
                'price' => '0.00'

            ],

            [

                'quantity' => 5,
                'description' => 'Platinum',
                'price' => '0.00'

            ]

        ];



        $pdf = Pdf::loadView('invoice', ['data' => $data]);
        return $pdf->download();

    }

}

<?php

use Illuminate\Support\Facades\Route;
use App\Http\Controllers\InvoiceController;



/*
|--------------------------------------------------------------------------
| Web Routes
|--------------------------------------------------------------------------
|
| Here is where you can register web routes for your application. These
| routes are loaded by the RouteServiceProvider within a group which
| contains the "web" middleware group. Now create something great!
|
*/

Route::get('invoice-pdf', [InvoiceController::class, 'index']);