Question

我有一个如下所示的Doctrine迁移：

<?php

namespace Application\Migrations;

use Doctrine\ORM\Mapping\PushNotification;
use Doctrine\DBAL\Migrations\AbstractMigration;
use Symfony\Component\DependencyInjection\ContainerAwareInterface;
use Doctrine\DBAL\Schema\Schema;

/**
 * Auto-generated Migration: Please modify to your needs!
 */
class Version20180123103147 extends AbstractMigration implements ContainerAwareInterface
{
    private $container;

    public function setContainer(ContainerInterface $container = null)
    {
        $this->container = $container;
    }

    /**
     * @param Schema $schema
     */
    public function up(Schema $schema)
    {
        $em = $this->container->getDoctrine()->getManager();
        $tableName = $em->getClassMetadata('AppBundle:PushNotification')->getTableName();

        $this->abortIf($this->connection->getDatabasePlatform()->getName() != 'mysql', 'Migration can only be executed safely on \'mysql\'.');

        $this->addSql('ALTER TABLE '.$tableName.' ADD COLUMN   last_offset int(11) ');
        $this->addSql('ALTER TABLE '.$tableName.' ADD COLUMN   failure_count int(11) ');
        $this->addSql('ALTER TABLE '.$tableName.' ADD COLUMN   is_sent int(11) ');
        $this->addSql('ALTER TABLE '.$tableName.' ADD COLUMN   send_date datetime ');


    }

    /**
     * @param Schema $schema
     */
    public function down(Schema $schema)
    {

        $em = $this->container->getDoctrine()->getManager();
        $tableName = $em->getClassMetadata('AppBundle:PushNotification')->getTableName();

        $this->abortIf($this->connection->getDatabasePlatform()->getName() != 'mysql', 'Migration can only be executed safely on \'mysql\'.');

        $this->addSql('ALTER TABLE '.$tableName.' DROP COLUMN   last_offset ');
        $this->addSql('ALTER TABLE '.$tableName.' DROP COLUMN   failure_count ');
        $this->addSql('ALTER TABLE '.$tableName.' DROP COLUMN   is_sent ');
        $this->addSql('ALTER TABLE '.$tableName.' DROP COLUMN   send_date ');

    }
}

...当运行迁移时，我收到一条错误，指出Declaration of Application\Migrations\Version20180123103147::setContainer() must be compatible with Symfony\Component\DependencyInjection\ContainerAwareInterface::setContainer(Symfony\Component\DependencyInjection\ContainerInterface $container = NULL)

这个错误似乎不合适，因为我直接从相关接口复制了方法签名。

我在这里缺少一些明显的代码吗？

Answer 1

您似乎正在尝试将container注入其他服务，这通常非常气馁。相反，您可以注入EntityManagerInterface并使用它。

但是，我确实看到这是一个迁移文件。你的代码中没有理由为什么这应该在这里，而只是像这样对表名进行硬编码：

$this->addSql('ALTER TABLE push_notification ADD COLUMN  last_offset int(11)');

总结一下，您收到该错误的原因是因为迁移期望将容器的实例传递给您的迁移，但是，由于您未将迁移注册为服务，因此不会发生这种情况。

(sidenote: never register a migration as a service)

使Doctrine迁移遵循ContainerAwareInterface

1 个答案: