函数getDoctrine不能在控制器的一个特定函数中工作

Question

编辑：现在尝试使用EventSubscriber作为b.enoit.be建议我。但是当我发送邮件时，没有任何反应。我没有收到任何错误，但邮件也没有存储在我的数据库中。我测试了我做错了什么？

SentMailsListener.php：

<?php

namespace Fidelise\SignUpBundle\EventListener;

use Symfony\Component\EventDispatcher\EventSubscriberInterface;
use Fidelise\SignUpBundle\Entity\EmailsHistory;
use Swift_Events_SendEvent;

class SentMailsListener implements EventSubscriberInterface
{

    public static function getSubscribedEvents()
    {
        return [Swift_Events_SendEvent::RESULT_SUCCESS => 'onMailSent'];
    }

    public function onMailSent(Swift_Events_SendEvent $event)
    {
        $em = $this->getDoctrine()->getManager();
        $message = $event->getMessage();
        $email = new EmailsHistory();
        $email->setRecipient(key($message->getTo()));
        $email->setSubject($message->getSubject());
        $email->setBody($message->getBody());
        $email->setSender(key($message->getFrom()));
        $em->persist($email);
        $em->flush();
    }
}

services.yml：

services:
    mail_sent_subscriber:
        class: Fidelise\SignUpBundle\EventListener\SentMailsListener
        tags:
            - { name: kernel.event_subscriber }

Answer 1

确保您的驱动程序从AbstractController扩展。无论如何，没有更多的代码，很难给你一个具体的答案。