我该如何解决这个问题:'created_at'列与mapper中的另一列冲突

时间:2013-10-21 07:26:16

标签: php symfony doctrine-orm

我目前正在与Symfony2合作开展一个小项目。

我正在尝试从表格中获取所有条目(默认情况下为今天)。

我首先在我的doctrine查询构建器中尝试使用DAY(),但这不起作用,所以我现在在我的实体存储库中使用本机sql查询:

$em = $this->getEntityManager();

$rsm = new ResultSetMappingBuilder($em);
$rsm->addRootEntityFromClassMetadata('Teacup\CompareBundle\Entity\Log', 'l');
$rsm->addJoinedEntityFromClassMetadata('Teacup\CompareBundle\Entity\Frame', 
                                       'f', 
                                       'l', 
                                       'frame', 
                                       array('id' => 'frame_id'));

$query = $em->createNativeQuery('SELECT l.id, l.severity, 
                                        l.details, l.created_at, f.url 
                                 FROM log l 
                                 INNER JOIN frame f ON l.frame_id = f.id 
                                 WHERE DAY(l.created_at) = :day', $rsm);

但是我收到了这个错误:

The column 'created_at' conflicts with another column in the mapper. 

我找不到如何解决它。我很确定这不过是,我只是继续努力而没有任何成功。有人能帮助我吗?

2 个答案:

答案 0 :(得分:1)

为什么不使用DBAL图层?

$day = date('d');

$dbal = $this->getDoctrine()->getConnection('default');
$stmt = 'SELECT l.id, l.severity, l.details, l.created_at, f.url FROM log l 
         INNER JOIN frame f ON l.frame_id = f.id 
         WHERE DAY(l.created_at) = :day';

$data = $dbal->fetchAssoc( $stmt , array( 'day' => $day ) );

答案 1 :(得分:1)

指定Doctrine的重命名模式以自动解决冲突:

$rsm = new ResultSetMappingBuilder($em, ResultSetMappingBuilder::COLUMN_RENAMING_INCREMENT);

通常配置RSM,然后为您的查询生成select cluse:

$selectClause = $rsm->generateSelectClause()

$query = $em->createNativeQuery('SELECT ' . $selectClause. '
                             FROM log l 
                             INNER JOIN frame f ON l.frame_id = f.id 
                             WHERE DAY(l.created_at) = :day', $rsm);