Question

TwitterTweets实体：

/**
 * MyBundle\CoreBundle\Entity\TwitterTweets
 *
 * @ORM\Table(name="twitter_tweets")
 * @ORM\Entity
 */
class TwitterTweets
{
    /**
     * @var TwitterUsers
     *
     * @ORM\ManyToOne(targetEntity="TwitterUsers", inversedBy="tweets")
     * @ORM\JoinTable(name="twitter_tweets",
     *   joinColumns={
     *     @ORM\JoinColumn(name="twitter_user_id", referencedColumnName="twitter_id")
     *   }
     * )
     */
    private $twitterUser;
}

TwitterUsers实体：

/**
 * MyBundle\CoreBundle\Entity\TwitterUsers
 *
 * @ORM\Table(name="twitter_users")
 * @ORM\Entity
 */
class TwitterUsers
{
    /**
     * @var TwitterTweets
     *
     * @ORM\OneToMany(targetEntity="TwitterTweets", mappedBy="twitterUser")
     */
    private $tweets;
}

twitter_tweets表：

CREATE TABLE `twitter_tweets` (
 `period` int(6) unsigned NOT NULL,
 `tweet_id` varchar(30) NOT NULL,
 `twitter_user_id` bigint(20) unsigned NOT NULL,
 `tweet` varchar(255) NOT NULL,
 `url` text NOT NULL,
 `retweet_count` varchar(10) NOT NULL DEFAULT '0',
 `created_at` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,
 PRIMARY KEY (`period`,`tweet_id`),
 KEY `period` (`period`),
 KEY `tweet_id` (`tweet_id`),
 KEY `twitter_user_id` (`twitter_user_id`),
 KEY `created_at` (`created_at`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

twitter_users表：

CREATE TABLE `twitter_users` (
 `twitter_id` bigint(20) unsigned NOT NULL,
 `user` varchar(255) NOT NULL,
 `username` varchar(255) NOT NULL,
 `profile_image_url` text NOT NULL,
 PRIMARY KEY (`twitter_id`),
 KEY `user` (`user`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

执行简单的SELECT时出现此错误：

$this->getDoctrine()->getRepository('MyBundleCoreBundle:TwitterTweets')->findOneBy(array( 'tweetId' => $data->tweet_id ))

未找到列：1054“字段列表”中的未知列't0.twitterUser_id'

SELECT t0.period AS period1, t0.tweet_id AS tweet_id2, t0.tweet AS tweet3,
t0.url AS url4, t0.retweet_count AS retweet_count5, t0.created_at AS created_at6,
t0.twitterUser_id AS twitterUser_id7
FROM twitter_tweets t0 WHERE t0.tweet_id = ?

我该如何解决这个问题？我试图只设置@ORM \ JoinColumn（没有JoinTable注释）但我收到此错误：

“message”：“SQLSTATE [42S02]：未找到基表或视图：1146表'database.twittertweets_twittertrends'不存在”

Answer 1

使用多对一单向关联映射解决：http://docs.doctrine-project.org/projects/doctrine-orm/en/2.0.x/reference/association-mapping.html#many-to-one-unidirectional

TwitterTweets实体：

/**
 * MyBundle\CoreBundle\Entity\TwitterTweets
 *
 * @ORM\Table(name="twitter_tweets")
 * @ORM\Entity
 */
class TwitterTweets
{
    /**
     * @var TwitterUsers
     *
     * @ORM\ManyToOne(targetEntity="TwitterUsers")
     * @ORM\JoinColumn(name="twitter_user_id", referencedColumnName="twitter_id")
     */
    private $twitterUser;
}

TwitterUsers实体：

/**
 * MyBundle\CoreBundle\Entity\TwitterUsers
 *
 * @ORM\Table(name="twitter_users")
 * @ORM\Entity
 */
class TwitterUsers
{
    // ... no properties needed
}

感谢jperovic的帮助：）

Answer 2

实际上Many-To-Many是通过@JoinTable定义的。要定义Many-To-One，您应该执行以下操作：

/**
     * @var TwitterUsers
     *
     * @ORM\ManyToOne(targetEntity="TwitterUsers", inversedBy="tweets")
     * @ORM\JoinColumn(name="twitter_user_id", referencedColumnName="twitter_id")
     */

Doctrine 2 ManyToOne映射注释

2 个答案: