invoiceninja/app/Http/Requests/Product/CreateProductRequest.php

<?php
/**
 * Invoice Ninja (https://invoiceninja.com)
 *
 * @link https://github.com/invoiceninja/invoiceninja source repository
 *
 * @copyright Copyright (c) 2019. Invoice Ninja LLC (https://invoiceninja.com)
 *
 * @license https://opensource.org/licenses/AAL
 */

namespace App\Http\Requests\Product;

use App\Http\Requests\Request;
use App\Models\Product;

class CreateProductRequest extends Request
{
    /**
     * Determine if the user is authorized to make this request.
     *
     * @return bool
     */

    public function authorize() : bool
    {
        return auth()->user()->can('create', Product::Class);
    }

    public function rules() : array
    {
    	return [
    		'product_key' => 'required',
    	]
    }

}