Save new Entity with relations on existed Entity (Symfony/Doctrine2) - php

Question

I want to create new Entity SlideTranslation, and assign existed slide.
But every time entity had created without id of Slide. I can create SlideTranslation and than assign Slide to it, but it seems bad solution for me.
$slide = $em->getRepository('Model:Slide')->find($id);
if(isset($slide)) {
try {
$slideTranslation = new SlideTranslation();
$slideTranslation->setTranstable($slide);
$slideTranslation->setLocale('uk');
$slideTranslation->setAltText('Alt text');
$em->persist($slideTranslation);
$em->flush();
} catch (Exception $e) {
dump($e->getMessage());
}
}
Relations.
/**
* #ORM\ManyToOne(targetEntity="Model\Entity\Slide", inversedBy="tranlations")
* #ORM\JoinColumn(name="translatable_id", referencedColumnName="id")
*/
private $transtable;
I have tried method with getReference, but no result. Maybe I am breaking some patterns or principles and It's not possible in Doctrine2.

Answer 1

You will have to probably do it in the other way around
$slide = $em->getRepository('Model:Slide')->find($id);
$slideTranslation = new SlideTranslation();
$slideTranslation->setLocale('uk');
$slideTranslation->setAltText('Alt text');
$slide->addTranslation($slideTranslation);
$em->flush();
Then add cascade to the Slide entity, and you don't even need to persist the entity Translation
/**
* #ORM\OneToMany(targetEntity="Model\Entity\SlideTranslation", mappedBy="transtable", cascade={"persist", "remove"})
*/
private $translations;