gistfile1.txt

namespace R12proofshop\Model;

use R12proofshop\Controller\ProofshopPageController;
use SilverStripe\Security\Permission;

class ProofshopPage extends \Page
{
    private static $table_name = 'ProofshopPage';

    private static $db = [];

    public function canCreate($member = null, $context = [])
    {

        return true;
    }

    public function canView($member = null)
    {
        return true;
    }

    public function canPublish($member = null)
    {

        return true;
    }

    public function canEdit($member = null)
    {
        return true;
    }

    public function canDelete($member = null)
    {
        return Permission::check('ADMIN');
    }

    public function getControllerName()
    {
        return ProofshopPageController::class;
    }
}

namespace R12proofshop\Controller;

class ProofshopPageController extends \PageController
{

    private static $pdfInfoPath = "";

    private static $allowed_actions = [
        'FileUploadFormProof',
        'handleFileUpload',
        'OrderDetailsForm',
        'handleOrderDetails',
        'kosten',
        'checkout',
        'CheckoutFormProofshop',
        'handleZahlung',
        'success',
        'doLogin',
        'error'
    ];

    public function init()
    {
        parent::init();
    }

    public function index()
    {
        return [];
    }

    public function Link($action = '')
    {

        return Controller::join_links('shop/web2proof', $action);
    }

}

I think this is the relevant part of the controller code.