Getting error on NOT IN subquery in Doctrine (Symfony 4) - php

Question

I'm trying to convert this MySql query
SELECT appcs_training.name, appcs_training.id FROM appcs_training
WHERE appcs_training.id
NOT IN (SELECT training_id FROM appcs_user_purchased_trainings WHERE user_id = 54)
into a queryBuilder but I am getting the following error over and over again...
I would appreciate your help to solve this.
[Semantical Error] line 0, col 57 near 'training FROM': Error: Invalid PathExpression. Must be a StateFieldPathExpression.
And this is my code:
public function findNonPurchasedTrainingsByUserId($userId)
{
$expr = $this->em->getExpressionBuilder();
return $this->em->createQueryBuilder()
->select('t')
->from('App:Training', 't')
->where($expr->notIn(
't.id',
$this->em->createQueryBuilder()
->select('ut.training')
->from('App:UserTraining', 'ut')
->where('ut.user = :userId')
->setParameter('userId', $userId)
->getDQL()
))
->getQuery()
->getResult();
}

Answer 1

Finally, setParameter wasn't valid. This is the only way I made it work
public function findNonPurchasedTrainingsByUserId(int $userId)
{
$expr = $this->getEntityManager()->getExpressionBuilder();
$subQuery = $this->em->createQueryBuilder()
->select('tr.id')
->from('App:UserTraining', 'ut')
->leftJoin('App:Training', 'tr', Join::WITH, $expr->eq('ut.training', 'tr.id'))
->where($expr->eq('ut.user', $userId))
->getDQL()
;
$query = $this->em->createQueryBuilder();
$query->Select('t')
->from('App:Training', 't')
->where($query->expr()->notIn('t.id', $subQuery))
->andWhere($query->expr()->eq('t.isActive', true))
->setMaxResults(8)
;
return $query->getQuery()->getResult();
}