Doctrine OneToOne remove entity - symfony

Question

When I remove entity, relations OneToOne has not been removed. Gallery has been removed successfully from database, but largeImage, mediumImage and smallImage not.
What I do wrong?
Delete action in controller:
public function deleteAction($id)
{
$em = $this->getDoctrine()->getManager();
$offer = $em->getRepository('ToCmsBundle:Offer')->find($id);
if($offer) {
if(!$offer->getGallery()->isEmpty()) {
foreach($offer->getGallery() as $key => $image) {
$image->setOffer(null);
$offer->removeGallery($image);
//$em->remove($image);
//$em->flush();
echo $image->getPath() . '<br/>';
}
} else {
echo 'gallery is empty';
}
$offer->setLargeImage(null);
$offer->setMediumImage(null);
$offer->setSmallImage(null);
$em->remove($offer);
$em->flush();
}
return $this->redirect($this->generateUrl('to_offer_list'));
}
My owner class:
/**
* Offer
*
* #ORM\Table(name="to_offer")
* #ORM\HasLifecycleCallbacks
* #ORM\Entity(repositoryClass="To\CmsBundle\Repository\OfferRepository")
*/
class Offer {
/**
* #var integer
*
* #ORM\Column(name="id", type="integer")
* #ORM\Id
* #ORM\GeneratedValue(strategy="AUTO")
*/
private $id;
/**
* #var string
*
* #ORM\Column(name="title", type="string", length=255)
*/
private $title;
/**
* #var string
*
* #ORM\Column(name="content", type="text")
*/
private $content;
/**
* #var ArrayCollection
*
* #ORM\OneToMany(targetEntity="Image", mappedBy="offer", cascade={"all"}, orphanRemoval=true)
*/
private $gallery;
/**
* #var Image
*
* #ORM\OneToOne(targetEntity="Image", cascade={"all"}, orphanRemoval=true)
*/
public $largeImage;
/**
* #var Image
*
* #ORM\OneToOne(targetEntity="Image", cascade={"all"}, orphanRemoval=true)
*/
public $mediumImage;
/**
* #var Image
*
* #ORM\OneToOne(targetEntity="Image", cascade={"all"}, orphanRemoval=true)
*/
public $smallImage;
/**
* #var ArrayCollection
*
* #ORM\ManyToMany(targetEntity="Category", inversedBy="articles")
* #ORM\JoinTable(name="to_articles_categories")
*/
private $categories;
/**
* #var User
*
* #ORM\ManyToOne(targetEntity="User")
* #ORM\JoinColumn(name="author_id", referencedColumnName="id")
*/
private $author;
public function __construct() {
$this->gallery = new ArrayCollection();
$this->categories = new ArrayCollection();
}
/** other stuff */
}
Image class:
/**
* Image
*
* #ORM\Table(name="to_images")
* #ORM\Entity(repositoryClass="To\CmsBundle\Repository\ImageRepository")
* #ORM\HasLifecycleCallbacks
*/
class Image
{
/**
* #var integer
*
* #ORM\Column(name="id", type="integer")
* #ORM\Id
* #ORM\GeneratedValue(strategy="AUTO")
*/
private $id;
/**
* #var string
*
* #ORM\Column(name="name", type="string", length=255)
*/
private $name;
/**
* #var string
*
* #ORM\Column(name="hashName", type="string", length=255)
*/
private $hashName;
/**
* #var integer
*
* #ORM\Column(name="position", type="integer")
*/
private $position;
/**
* #var string
*
* #ORM\Column(name="path", type="string", length=255)
*/
private $path;
/**
* #var string
*
* #ORM\Column(name="thumbnail", type="string", length=255)
*/
private $thumbnail;
/**
* #var string
*
* #ORM\Column(name="originalImage", type="string", length=255)
*/
private $originalImage;
/**
* #var Offer
*
* #ORM\ManyToOne(targetEntity="Offer", inversedBy="gallery")
* #ORM\JoinColumn(name="offer_id", referencedColumnName="id", nullable=true)
*/
private $offer;
/**
* #var \DateTime
*
* #Gedmo\Timestampable(on="create")
* #ORM\Column(name="createdAt", type="datetime")
*/
private $createdAt;
/**
* #var \DateTime
*
* #Gedmo\Timestampable(on="update")
* #ORM\Column(name="updatedAt", type="datetime")
*/
private $updatedAt;
/**
* #var integer
*
* #ORM\Column(name="x", type="integer")
*/
protected $x = 0;
/**
* #var integer
*
* #ORM\Column(name="y", type="integer")
*/
protected $y = 0;
/**
* #var integer
*
* #ORM\Column(name="w", type="integer")
*/
protected $w = 0;
/**
* #var integer
*
* #ORM\Column(name="h", type="integer")
*/
protected $h = 0;
/**
* #var boolean
*
* #ORM\Column(name="defaultImage", type="boolean")
*/
private $default = 0;
public function __construct() {
$this->position = 0;
$this->default = 0;
$this->x = 0;
$this->y = 0;
}
/**
* #ORM\PrePersist()
* #ORM\PreUpdate()
*/
public function preUpload()
{
$this->position = $this->position ?: 0;
$this->default = $this->default ?: 0;
$this->x = $this->x ?: 0;
$this->y = $this->y ?: 0;
/*if (null !== $this->getFile()) {
// do whatever you want to generate a unique name
$this->name = sha1(uniqid(mt_rand(), true));
$this->originName = $this->getFile()->getClientOriginalName();
$this->extension = $this->getFile()->guessExtension();
$this->path = $this->name.'.'.$this->extension;
}*/
}
/**
* #ORM\PreRemove()
*/
public function removeUpload()
{
echo $this->getRootPath().$this->originalImage; echo '<br/>';
echo $this->getRootPath().$this->thumbnail; echo '<br/>';
echo $this->getRootPath().$this->path; echo '<br/>';
echo '<br/><br/>';
if(file_exists($this->getRootPath().$this->originalImage))
unlink($this->getRootPath().$this->originalImage);
if(file_exists($this->getRootPath().$this->thumbnail))
unlink($this->getRootPath().$this->thumbnail);
if(file_exists($this->getRootPath().$this->path))
unlink($this->getRootPath().$this->path);
}
/** other stuff */
}

Answer 1

Your entities are referencing each other so you should try remove these :
$offer->setLargeImage(null);
$offer->setMediumImage(null);
$offer->setSmallImage(null);
and call flush() once before $em->remove($offer); and once after.
foreach ($offer->getGallery() as $image) {
$offer->removeGallery($image);
}
$em->flush();
$em->remove($offer);
$em->flush();
This will only work as is if all the images are "privately owned", meaning that they are not referenced multiple times in this entity or in another entity.

Answer 2

$offer->setLargeImage(null);
$offer->setMediumImage(null);
$offer->setSmallImage(null);
Your "$offer" doesn't have the images anymore when you're deleting it.
UPDATE
When you are doing your 'find()' you don't have the image object, but a proxy because of the lazy loading. If you need the offer with image objects, create a query with leftJoin on the images to get the offer AND images. And then, I think that you'll not have problems.
(look at the end of this tutorial to have an example of a leftjoin on objects : http://symfony.com/fr/doc/current/cookbook/security/entity_provider.html#gerer-les-roles-via-la-base-de-donnees)