Symfony Form Querybuilder with parameters - forms

Question

I have the need to create a dropdown field with grouped data:
My form:
class RetailerDetailFilterType extends AbstractType
{
public function getActiveRetailerMetrics(): array
{
return range(25,36);
}
public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder->add('month', EntityType::class,
[
'class' => 'AppBundle:ConsolidatedOperatorCategoryLowData',
'query_builder' => function(ConsolidatedOperatorCategoryLowDataRepository $er){
return $er->getMinMaxByMetricQueryBuilder($this->getActiveRetailerMetrics());
}
]);
}
public function getBlockPrefix()
{
return 'key_metric';
}
}
My Repository:
class ConsolidatedOperatorCategoryLowDataRepository extends \Doctrine\ORM\EntityRepository
{
public function getMinMaxByMetricQueryBuilder($metricRange)
{
$qb = $this->getEntityManager()
->createQueryBuilder('d');
$qb
->select('d.id, YEAR(d.date) as dyear, MONTH(d.date) as dmonth')
->from('AppBundle:ConsolidatedOperatorCategoryLowData','d')
->where($qb->expr()->in('d.metric_id', $metricRange))
->groupBy('dyear')
->addGroupBy('dmonth')
->setMaxResults(10)
;
return $qb;
}
I'm getting
Warning: spl_object_hash() expects parameter 1 to be object, integer given
at UnitOfWork ->isScheduledForInsert (3182005)
in vendor/doctrine/orm/lib/Doctrine/ORM/EntityManager.php at line 710 +
at EntityManager ->contains (3182005)
in vendor/symfony/symfony/src/Symfony/Bridge/Doctrine/Form/ChoiceList/IdReader.php at line 116 +
at IdReader ->getIdValue (3182005)
at call_user_func (array(object(IdReader), 'getIdValue'), 3182005)
in vendor/symfony/symfony/src/Symfony/Component/Form/ChoiceList/ArrayChoiceList.php at line 205 +
at ArrayChoiceList ->flatten (array('id' => 3182005, 'dyear' => '2016', 'dmonth' => '12'), array(object(IdReader), 'getIdValue'), array(), array(), null)
in vendor/symfony/symfony/src/Symfony/Component/Form/ChoiceList/ArrayChoiceList.php at line 200 +
at ArrayChoiceList ->flatten (array(array('id' => 3182005, 'dyear' => '2016', 'dmonth' => '12'), array('id' => 3186685, 'dyear' => '2017', 'dmonth' => '1'), array('id' => 3191365, 'dyear' => '2017', 'dmonth' => '2'), array('id' => 3195595, 'dyear' => '2017', 'dmonth' => '3'), array('id' => 3200275, 'dyear' => '2017', 'dmonth' => '4')), array(object(IdReader), 'getIdValue'), array(), array(), array(null))
in vendor/symfony/symfony/src/Symfony/Component/Form/ChoiceList/ArrayChoiceList.php at line 91

Answer 1

I think it has to do with how Doctrine ORM deals with relationships. When you want to retrieve an entity by a referenced object's id, say find all posts by a user id, then you still have to pass the User-object to the QueryBuilder, not just the id. This is because Doctrine will resolve how those entities are connected itself.
It seems that metric_id actually is a reference to some kind of Metric-entity and just passing an array of int instead of the actual objects seems to trip up Doctrine's QueryBuilder.
You could try mapping the id's to a new instance of Metric and then pass that array instead.
Another solution - the one I would prefer - is to use Native SQL for this.