Question

我正在尝试从页首横幅中获取一些结果，以便以json格式投放。

我的实际查询非常正常，如下所示：

...
$pos = 25 //some position
$cnx->beginTransaction();
        $cnx->executeQuery('SET @rownum := 0');
        $sql = "
        SELECT * FROM (
            SELECT @rownum := @rownum + 1 AS rank, id, name, birthdate, gamesplayed,country,city
            FROM board  ORDER BY score DESC
        ) as result 
        WHERE result.rank >= (" . $pos . "-10)  and result.rank <= (" . $pos . "+10)
        ORDER BY rank
        ";

$preresults = $cnx->executeQuery($sql);
$cnx->commit();

$results = $preresults->fetchAll();

该请求有效，但我丢失了所有字段类型（广播），所有值均采用字符串格式。

如何像我使用dql（对象）那样获取适当类型的值？

谢谢

Answer 1

您需要像这样使用ResultSetMappingBuilder类：

$rsm = new ResultSetMappingBuilder($this->entityManager);
$rsm->addRootEntityFromClassMetadata('App:YourEntity', 'y');
$sql = "SELECT * FROM (
        SELECT @rownum := @rownum + 1 AS rank, id, name, birthdate, gamesplayed,country,city
        FROM board  ORDER BY score DESC
    ) as result 
    WHERE result.rank >= (" . $pos . "-10)  and result.rank <= (" . $pos . "+10)
    ORDER BY rank";
$query = $this->entityManager->createNativeQuery($sql, $rsm);

return $query->getResult();

这将返回一个YourEntity []

数组

从带有学义（Symfony）的本地sql请求中查找对象而不是数组

1 个答案: