StofDoctrineExtensionsBundle checking the uniqueness of slug by the two fields - php

Question

I use Knp\DoctrineBehaviors for Translation and StofDoctrineExtensionsBundle for Sluggable. How to make checking the uniqueness of slug by the sluggable and locale? I want to get the slug look like this:
for EN: /contacts
for PT: /pt/contacts
for PT (if duplicate): /pt/contacts-1
for ES: /es/contacts
But now, i have this database filter_node_translation
Entity\FilterNode.php:
<?php
namespace AppBundle\Entity;
use Doctrine\ORM\Mapping as ORM;
use Knp\DoctrineBehaviors\Model as ORMBehaviors;
/**
* #ORM\Table(name="filter_node")
* #ORM\Entity()
*/
class FilterNode
{
use ORMBehaviors\Translatable\Translatable;
/**
* #ORM\Id
* #ORM\GeneratedValue(strategy="AUTO")
* #ORM\Column(name="id", type="integer")
*/
protected $id;
/**
* #return mixed
*/
public function getId()
{
return $this->id;
}
}
FilterNodeTranslation:
<?php
namespace AppBundle\Entity;
use Doctrine\ORM\Mapping as ORM;
use Knp\DoctrineBehaviors\Model as ORMBehaviors;
use Gedmo\Mapping\Annotation as Gedmo;
/**
* #ORM\Table(name="filter_node_translation")
* #ORM\Entity()
*/
class FilterNodeTranslation
{
use ORMBehaviors\Translatable\Translation;
/**
* #var string
*
* #ORM\Column(type="string", nullable=true)
*/
protected $sluggable;
/**
* #var string
*
* #Gedmo\Slug(fields={"sluggable"})
* #ORM\Column(type="string", nullable=true)
*/
protected $slug;
/**
* #return string
*/
public function getSluggable()
{
return $this->sluggable;
}
/**
* #param string $sluggable
*/
public function setSluggable($sluggable)
{
$this->sluggable = $sluggable;
}
}

Answer 1

I found solution. Gedmo sluggable have other configuration option "unique_base".
It looks like this:
class FilterNodeTranslation
{
/**
* #var string
*
* #Gedmo\Slug(updatable=true, unique=true, unique_base="locale", fields={"sluggable"})
* #ORM\Column(type="string")
*/
protected $slug;
}