如何在DBALException后重新打开Doctrine Entity Manager

Question

我有一个Symfony 2的控制台应用程序，该脚本在cron（终端）上运行。但是，在\ Doctrine \ DBAL \ DBALException之后，脚本抛出N \ Doctrine \ ORM \ ORMException并显示消息“EntityManager已关闭。”。

这是部分脚本：

try {

    $this->getDoctrine()->getConnection()->beginTransaction();

    // ...

    $manager = $this->getDoctrine()->getManager();

    $entity = new Post();
    $entity
        ->setAuthor($author)
        ->setTitle($title)
        ->setContent($content)
    ;

    $manager->persist($entity);
    $manager->flush();

    $this->getDoctrine()->getConnection()->commit();

    return $entity->getId();

} catch (\Doctrine\DBAL\DBALException $e) {

    $this->getDoctrine()->resetManager();

    $output->writeln(sprintf(
        '<error>[!] %s (%s) the post could not be created "%s"</error>',
        get_class($e),
        date('Y-m-d H:i:s'),
        $e->getMessage()
    ));

    return false;

} catch (\Exception $e) {

    $this->getDoctrine()->getConnection()->rollback();

    $output->writeln(sprintf(
        '<error>[!] %s (%s) the post could not be created "%s"</error>',
        get_class($e),
        date('Y-m-d H:i:s'),
        $e->getMessage()
    ));

    return false;
}

怎么解决？

Answer 1

您可以手动重置您的实体管理器，如下所示：

//...
} catch (\Doctrine\DBAL\DBALException $e) {

    $manager = $this->getDoctrine()->getManager();

    if (!$manager->isOpen()) {
        $manager = $manager->create(
            $manager->getConnection(),
            $manager->getConfiguration()
        );
    }

    $output->writeln(sprintf(
        '<error>[!] %s (%s) the post could not be created "%s"</error>',
        get_class($e),
        date('Y-m-d H:i:s'),
        $e->getMessage()
    ));

    return false;
} 
//...

Answer 2

如果您在项目中使用PSR-15和PHP-DI，请尝试以下中间件：

https://github.com/autorusltd/doctrine-persistent-entity-manager-middleware

你可以像这样使用它：

use Arus\Middleware\DoctrinePersistentEntityManagerMiddleware;

$requestHandler->add(new DoctrinePersistentEntityManagerMiddleware($container));

$requestHandler->handle($request);