Sonata Admin Bundle One-to-Many relationship not saving foreign ID

Question

I have a problem with the SonataAdminBunle in combination with symfony 2.2. I have a Project entity and a ProjectImage entity and specified a One-to-Many relationship betwee

Answer 1

Although unrelated, I'd slighty tweak your One-to-Many annotation:

class Project
{
    /**
     * @ORM\OneToMany(targetEntity="ProjectImage", mappedBy="project", cascade={"persist"}, orphanRemoval=true)
     * @ORM\OrderBy({"id" = "ASC"})
     */
    private $images;
}

Back on track, your annotations and Sonata Admin forms look fine, so I'm pretty sure you're missing one of those methods in your Project entity class:

public function __construct() {
    $this->images = new \Doctrine\Common\Collections\ArrayCollection();
}

public function setImages($images)
{
    if (count($images) > 0) {
        foreach ($images as $i) {
            $this->addImage($i);
        }
    }

    return $this;
}

public function addImage(\Acme\YourBundle\Entity\ProjectImage $image)
{
    $image->setProject($this);

    $this->images->add($image);
}

public function removeImage(\Acme\YourBundle\Entity\ProjectImage $image)
{
    $this->images->removeElement($image);
}

public function getImages()
{
    return $this->Images;
}

And in your Admin class:

public function prePersist($project)
{
    $this->preUpdate($project);
}

public function preUpdate($project)
{
    $project->setImages($project->getImages());
}