对于我的API开发,我使用apigility和 doctrine 。我目前正在编写一个用户可以喜欢帖子的端点。每个帖子都有一个作者。我有2个表,其中包含以下列和示例数据:
动作
for (long key = 0; key < 5; key++)
{
var localKey = key;
var processingThread = new Thread(() => Setup(localKey));
processingThread.Start();
}
(post_id =发布表的外键) (user_id =喜欢帖子的源用户)
发表
id post_id user_id createdAt
1 10 1 0000-00-00 00:00:00
2 12 2 0000-00-00 00:00:00
3 13 3 0000-00-00 00:00:00
(user_id =用户表的外键)
我需要什么
我需要作者(user_id)拥有的total_likes。可以通过加入post表在Action表上查询。我已经尝试为此创建一个DQL查询:
id user_id createdAt
10 62 0000-00-00 00:00:00
12 4 0000-00-00 00:00:00
13 4 0000-00-00 00:00:00
这个查询,我得到的错误数量为total_likes:
// Get total likes an autor has received
$queryBuilder->select('count(p)')
->from('Db\Entity\Action', 'a')
->leftJoin('p.post', 'p')
->where('p.user = :user')
->setParameter('user', $targetUser);
$totalLikes = $queryBuilder->getQuery()->getSingleScalarResult();
如何更正此查询以获得用户喜欢的正确数量?使用示例表数据,user_id = 62的total_likes应该给我回复:
{
"total_likes": "2"
}
答案 0 :(得分:1)
试试这个:
// Get total likes an autor has received
$queryBuilder
->select('count(p)')
->from('Db\Entity\Action', 'a')
->leftJoin(
'Db\Entity\Post',
'p',
\Doctrine\ORM\Query\Expr\Join::WITH,
'a.post = p.id'
)
->where('p.user = :user')
->setParameter('user', $users);
$totalLikes = $queryBuilder->getQuery()->getSingleScalarResult();
}