我正在开发我的第一个 symfony 应用程序,在尝试使用 queryBuilder 时,我已经为一个问题苦苦挣扎了几个小时。
我正在尝试执行 SQL 查询并收到以下错误:
request.CRITICAL: Uncaught PHP Exception Doctrine\ORM\Query\QueryException: "[Semantical Error] line 0, col 288 near 'FROM StatsBundle\Entity\PlayerRealMatch': Error: Class 'FROM' is not defined."
基本上,我存储的是足球运动员的评分和进球数,现在我想检索它们的聚合,包括总和和平均值。
我在一个服务里面,我正在调用我的PlayerRealMatchRepository里面的一个方法,这个方法的核心代码如下:
$qb = $this->createQueryBuilder('prm');
$qb->select(
"SUM(prm.has_started) as tit,
SUM(prm.has_entered) as rempl,
SUM(prm.yellow_cards) as yc,
SUM(prm.red_card) as rc,
SUM(prm.goals) AS gf,
SUM(prm.own_goals) as ga,
AVG(prm.rating) as avg"
)
->innerJoin('prm.realMatch', 'rm')
->where('prm.playerId = :idPlayer')
->groupBy('rm.season')
->setParameter('idPlayer', $player->getId())
->getQuery();
$query =$qb->getQuery();
$seasonData = $query->getResult();
如果我用我的调试器查看 $query 对象的 _dql 属性,这就是我所拥有的:
SELECT SUM(prm.has_started) as tit,
SUM(prm.has_entered) as rempl,
SUM(prm.yellow_cards) as yc,
SUM(prm.red_card) as rc,
SUM(prm.goals) AS gf,
SUM(prm.own_goals) as ga,
AVG(prm.rating) as avg
FROM StatsBundle\Entity\PlayerRealMatch prm
INNER JOIN prm.realMatch rm
WHERE prm.playerId = :idPlayer
GROUP BY rm.season
在我看来这并没有那么糟糕,你们知道这里出了什么问题吗?
注意:这是我试图实现的查询示例,它直接在我的数据库上完美运行:
SELECT SUM(prm.has_started) as tit,
SUM(prm.has_entered) as rempl,
SUM(prm.yellow_cards) as yc,
SUM(prm.red_card) as rc,
SUM(prm.goals) AS gf,
SUM(prm.own_goals) as ga,
AVG(prm.rating) as avg
FROM player_real_match prm
INNER JOIN real_match rm ON prm.real_match_id = rm.id
WHERE prm.player_id = 327
GROUP BY rm.season;
详情如下
3 个实体:
- 播放器
- RealMatch:关于比赛的一般数据
- PlayerRealMatch : 球员在比赛中的表现
下面是它们各自配置的摘录,以显示它们的链接方式。
StatsBundle\Entity\Player:
...
manyToOne:
real_team:
targetEntity: RealTeam
inversedBy: players
joinColumn:
onDelete: CASCADE
name: real_team_id
referencedColumnName: id
oneToMany:
player_real_matches:
targetEntity: PlayerRealMatch
mappedBy: player
...
StatsBundle\Entity\RealMatch:
...
home_team:
targetEntity: RealTeam
inversedBy: home_matches
joinColumn:
onDelete: CASCADE
name: home_team_id
referencedColumnName: id
away_team:
targetEntity: RealTeam
inversedBy: away_matches
joinColumn:
onDelete: CASCADE
name: away_team_id
referencedColumnName: id
oneToMany:
player_real_matches:
targetEntity: PlayerRealMatch
mappedBy: real_match
...
StatsBundle\Entity\PlayerRealMatch:
...
manyToOne:
real_match:
targetEntity: RealMatch
inversedBy: player_real_matches
joinColumn:
onDelete: CASCADE
name: real_match_id
referencedColumnName: id
player:
targetEntity: Player
inversedBy: player_real_matches
joinColumn:
onDelete: CASCADE
name: player_id
referencedColumnName: id
...
从服务调用存储库方法
foreach ($players as $player) {
$this->aggregatePlayerData($player, $match);
}
private function aggregatePlayerData(Player $player, RealMatch $match)
{
$playerStats = $this->_em
->getRepository('StatsBundle:PlayerRealMatch')
->getAggregatedStats($player, $match);
}
public function __construct(EntityManager $entityManager)
{
$this->_em = $entityManager;
}
这里是关于我的服务的 services.yml
stats.aggregator:
class: StatsBundle\Service\Aggregator
arguments: [ "@doctrine.orm.entity_manager"]
存储库方法
/**
* getAggregatedStats
*
* @param $player the player entity
* @param RealMatch $match the real match entity
*
* @return array
*/
public function getAggregatedStats($player, RealMatch $match)
{
$qb = $this->createQueryBuilder('prm');
$qb->select(
"SUM(prm.has_started) as tit,
SUM(prm.has_entered) as rempl,
SUM(prm.yellow_cards) as yc,
SUM(prm.red_card) as rc,
SUM(prm.goals) AS gf,
SUM(prm.own_goals) as ga,
AVG(prm.rating) as avg"
)
->from('StatsBundle:PlayerRealMatch', 'prm')
->innerJoin('prm.realMatch', 'rm')
->where('prm.playerId = :idPlayer')
->groupBy('rm.season')
->setParameter('idPlayer', $player->getId())
->getQuery();
$query = $qb->getQuery();
$seasonData = $query->getResult();
return $seasonData;
}
抱歉,这篇文章太长了,我试图尽可能清楚地记录下来。 非常感谢您的帮助!
最佳答案
您正在尝试使用保留的 sql 字作为列名, 尝试改变
"AVG(prm.rating) as avg" -> "AVG(prm.rating) as avgRating"
关于Symfony/Doctrine 错误 : "Class ' FROM' is not defined. “在 getResult() 上,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/42898860/