Problems trying to translate an entity Symfony2 - symfony

Question

I am trying to set some translatable contents in Symfony2 with Gedmo Translatable but seems I am doing something wrong or missing something.
I included the line in the composer.json file:
"gedmo/doctrine-extensions": "2.3.*#dev"
And also, I added this lines in the config.yml file:
stof_doctrine_extensions:
orm:
alopatria:
timestampable: true
sluggable: true
translatable: true
The entity class is set like this:
<?php
namespace ...;
use Gedmo\Mapping\Annotation as Gedmo;
use Doctrine\ORM\Mapping as ORM;
use Gedmo\Translatable\Translatable;
/**
* ...\Entity
*
* #ORM\Table(name="content")
* #ORM\HasLifecycleCallbacks
* #ORM\Entity(repositoryClass="...\Entity\ContentRepository")
*/
class Content implements Translatable
{
/**
*
* #ORM\Column(name="id", type="bigint", nullable=false)
* #ORM\Id
* #ORM\GeneratedValue(strategy="IDENTITY")
*/
protected $id;
/**
* #Gedmo\Translatable
* #ORM\Column(name="title", type="string", length=32, nullable=false)
*/
protected $title;
/**
* #Gedmo\Translatable
* #ORM\Column(name="text", type="text", nullable=false)
*/
protected $text;
/**
* #var datetime $created
*
* #Gedmo\Timestampable(on="create")
* #ORM\Column(type="datetime")
*/
private $created;
/**
* #var datetime $updated
*
* #Gedmo\Timestampable(on="update")
* #ORM\Column(type="datetime")
*/
private $updated;
/**
* #var datetime $contentChanged
*
* #ORM\Column(name="content_changed", type="datetime", nullable=true)
* #Gedmo\Timestampable(on="change", field={"title", "text"})
*/
private $contentChanged;
/**
* #Gedmo\Slug(fields={"title"})
* #ORM\Column(length=128, unique=true)
*/
private $slug;
/**
* Get id
*
* #return integer
*/
public function getId()
{
return $this->id;
}
/**
* Set title
*
* #param string $title
* #return Content
*/
public function setTitle($title)
{
$this->title = $title;
return $this;
}
/**
* Get title
*
* #return string
*/
public function getTitle()
{
return $this->title;
}
/**
* Set text
*
* #param string $text
* #return Content
*/
public function setText($text)
{
$this->text = $text;
return $this;
}
/**
* Get text
*
* #return string
*/
public function getText()
{
return $this->text;
}
/**
* Set created
*
* #param \DateTime $created
* #return Content
*/
public function setCreated($created)
{
$this->created = $created;
return $this;
}
/**
* Get created
*
* #return \DateTime
*/
public function getCreated()
{
return $this->created;
}
/**
* Set updated
*
* #param \DateTime $updated
* #return Content
*/
public function setUpdated($updated)
{
$this->updated = $updated;
return $this;
}
/**
* Get updated
*
* #return \DateTime
*/
public function getUpdated()
{
return $this->updated;
}
/**
* Set contentChanged
*
* #param \DateTime $contentChanged
* #return Content
*/
public function setContentChanged($contentChanged)
{
$this->contentChanged = $contentChanged;
return $this;
}
/**
* Get contentChanged
*
* #return \DateTime
*/
public function getContentChanged()
{
return $this->contentChanged;
}
/**
* Set slug
*
* #param string $slug
* #return Content
*/
public function setSlug($slug)
{
$this->slug = $slug;
return $this;
}
/**
* Get slug
*
* #return string
*/
public function getSlug()
{
return $this->slug;
}
}
When I try to create a translatable content in my controller:
$content = new Content();
$content->setTitle('Content example');
$content->setText('Content example...');
$em = $this->getDoctrine()->getEntityManager();
$em->persist($content);
$em->flush();
$content->setTranslatableLocale('fr'); // change locale
$em->persist($content);
$em->flush();
This is the error:
The class 'Gedmo\Translatable\Entity\Translation' was not found in the chain configured namespaces ...\Entity, FOS\UserBundle\Model
Any help? Thanks!!!

Answer 1

You need to configure the translatable Entity to use as well. In config.yml:
orm:
auto_generate_proxy_classes: %kernel.debug%
mappings:
translatable:
type: annotation
is_bundle: false
prefix: Gedmo\Translatable\Entity
dir: "%kernel.root_dir%/../vendor/gedmo/doctrine-extensions/lib/Gedmo/Translatable/Entity"
alias: GedmoTranslatable