Shopware_Components_StringCompiler example

$userId = $params['userId'];
        $status = $params['status'];

        if (!$toMail || !$fromName || !$fromMail || !$subject || !$content || !$userId) {
            $this->View()->assign(['success' => false, 'message' => 'All required fields needs to be filled.']);

            return;
        }

        $content = preg_replace('`<br(?: /)?>([\\n\\r])`', '$1', $params['content']);

        $compiler = new Shopware_Components_StringCompiler($this->View()->Engine());
        $defaultContext = [
            'sConfig' => Shopware()->Config(),
        ];
        $compiler->setContext($defaultContext);

        // Send eMail to customer         $mail->IsHTML(false);
        $mail->From = $compiler->compileString($fromMail);
        $mail->FromName = $compiler->compileString($fromName);
        $mail->Subject = $compiler->compileString($subject);
        $mail->Body = $compiler->compileString($content);
        

use Shopware_Components_TemplateMail;

class TemplateMail
{
    /** * @return Shopware_Components_TemplateMail */
    public function factory(Container $container)
    {
        $container->load('mailtransport');

        $stringCompiler = new Shopware_Components_StringCompiler(
            $container->get(Enlight_Template_Manager::class)
        );
        $mailer = new Shopware_Components_TemplateMail();
        if ($container->initialized('shop')) {
            $shop = $container->get('shop');
            if (!$shop instanceof Shop) {
                throw new RuntimeException('Shop object not found in DI container');
            }
            $mailer->setShop($shop);
        }
        $mailer->setModelManager($container->get(ModelManager::class));
        

$mail = $this->getRepository()->find($id);
        if (!$mail instanceof Mail) {
            $this->View()->assign(['success' => false, 'message' => 'Mail not found']);

            return;
        }

        if (!($value = $this->Request()->getParam('value'))) {
            $this->View()->assign(['success' => false, 'message' => 'Value not found']);
        }

        $compiler = new Shopware_Components_StringCompiler($this->View()->Engine());

        $shop = $this->get('models')->getRepository(Shop::class)->getActiveDefault();
        $this->get(ShopRegistrationServiceInterface::class)->registerShop($shop);

        $compiler->setContext(array_merge($this->getDefaultMailContext($shop), $mail->getContext()));

        try {
            $template = $compiler->compileString($value);
        } catch (Enlight_Exception $e) {
            $this->View()->assign(['success' => false, 'message' => $e->getMessage()]);