change default identity column name in inherited (joined ) class in symfony - symfony

Question

I have used a Class Table Inheritance so that my entity "image" inherits from the "media" Entity.
this procedure create an auto generated column id in the image table. How can i change this default name "id" to set it "media_id" so that the image column has a column "media_id" instead of "id" ?
here is my code :
namespace App\Entity\OldApp;
use Doctrine\ORM\Mapping as ORM;
use \App\Entity\OldApp\TemplateContent;
/**
* #ORM\Entity(repositoryClass="App\Repository\OldApp\MediaRepository")
* #ORM\InheritanceType("JOINED")
* #ORM\DiscriminatorColumn(name="type", type="string")
* #ORM\DiscriminatorMap({"media" = "Media", "image" = "Image"})
*/
class Media
{
/**
* #ORM\Id()
* #ORM\GeneratedValue()
* #ORM\Column(type="integer",name="CAT_id")
*/
private $id;
/**
* #ORM\Column(name="filename", type="string", length=100, nullable=false)
*/
private $filename;
/**
* #ORM\Column(name="size", type="string", length=30, nullable=false)
*/
private $size;
/**
* #ORM\Column(name="date", type="datetime", nullable=false)
*/
private $date;
/**
* #ORM\Column(name="high", type="boolean", nullable=false)
*/
private $high = '0';
namespace App\Entity\OldApp;
use Doctrine\ORM\Mapping as ORM;
/**
* #ORM\Entity(repositoryClass="App\Repository\OldApp\ImageRepository")
*/
class Image extends Media
{
/**
* #ORM\Column(type="string", length=3)
*/
private $extension;
private static $type='image' ;
/**
* #ORM\Column(type="string", length=50)
*/
private $ratio;
/**
* #ORM\Column(type="smallint")
*/
private $height;
/**
* #ORM\Column(type="smallint")
*/
private $width;
}
i've tryed to add #PrimaryKeyJoinColumn(name="person_id") Bellow #ORM\Entity but i ged the following error
Error
[Semantical Error] The annotation "#Doctrine\ORM\Mapping\PrimaryKeyJoinColumn" in class App\Entity\OldApp\Image doe
s not exist, or could not be auto-loaded.

Answer 1

trait MediaTrait
{
/**
* #ORM\Column(name="filename", type="string", length=100, nullable=false)
*/
private $filename;
// getter //setter
}
/**
* #ORM\Entity(repositoryClass="App\Repository\OldApp\MediaRepository")
* #ORM\InheritanceType("JOINED")
* #ORM\DiscriminatorColumn(name="type", type="string")
* #ORM\DiscriminatorMap({"media" = "Media", "image" = "Image"})
*/
class Media
{
/**
* #ORM\Id()
* #ORM\GeneratedValue()
* #ORM\Column(type="integer",name="CAT_id")
*/
private $id;
use MediaTrait;
}
/**
* #ORM\Entity(repositoryClass="App\Repository\OldApp\ImageRepository")
*/
class Image
{
/**
* #ORM\Id()
* #ORM\GeneratedValue()
* #ORM\Column(type="integer",name="media_id")
*/
private $id;
use MediaTrait;
// reste of the code
....
}