Sonata\InvoiceBundle\Controller\InvoiceController::viewAction PHP Method

    public function viewAction($reference)
    {
        $order = $this->getOrderManager()->findOneBy(array('reference' => $reference));
        if (null === $order) {
            throw new AccessDeniedException();
        }
        $this->checkAccess($order->getCustomer());
        $invoice = $this->getInvoiceManager()->findOneBy(array('reference' => $reference));
        if (null === $invoice) {
            $invoice = $this->getInvoiceManager()->create();
            $this->getInvoiceTransformer()->transformFromOrder($order, $invoice);
            $this->getInvoiceManager()->save($invoice);
        }
        $this->get('sonata.seo.page')->setTitle($this->get('translator')->trans('invoice_view_title', array(), 'SonataInvoiceBundle'));
        return $this->render('SonataInvoiceBundle:Invoice:view.html.twig', array('invoice' => $invoice, 'order' => $order));
    }