Problem with implementing KnpLabs / DoctrineBehaviors / Translatable - php

Question

I am trying to implement KnpLabs / DoctrineBehaviors / Translatable in Symfony 5.2.
I have implemented two entities for translation as described in the docs, however, Symfony throws the following error:
Error: Class App\Entity\BlogPost contains 11 abstract methods and must therefore be declared abstract or implement the remaining methods (Knp\DoctrineBehaviors\Contract\Entity\TranslatableInterface::getTranslations, Knp\DoctrineBehaviors\Contract\Entity\TranslatableInterface::getNewTranslations, Knp\DoctrineBehaviors\Contract\Entity\TranslatableInterface::addTranslation, ...)
When I declare that class "abstract", I am getting the following error:
Trying to invoke abstract method Knp\DoctrineBehaviors\Contract\Entity\TranslatableInterface::getTranslationEntityClass()
How can I solve this problem?
Entity BlogPost
<?php
declare(strict_types=1);
namespace App\Entity;
use Doctrine\ORM\Mapping as ORM;
use Knp\DoctrineBehaviors\Contract\Entity\TranslatableInterface;
use Knp\DoctrineBehaviors\Model\Translatable\TranslationTrait;
/**
* #ORM\Entity
*/
abstract class BlogPost implements TranslatableInterface
{
use TranslationTrait;
/**
* #ORM\Id
* #ORM\GeneratedValue
* #ORM\Column(type="integer")
*/
private $id;
/**
* #ORM\Column(type="integer", nullable=true)
*/
private $active;
public function getId(): ?int
{
return $this->id;
}
public function getActive(): ?int
{
return $this->id;
}
public function setActive(int $active): self
{
$this->active = $active;
return $this;
}
}
Entity BlogPostTranslation
<?php
declare(strict_types=1);
namespace App\Entity;
use Doctrine\ORM\Mapping as ORM;
use Knp\DoctrineBehaviors\Contract\Entity\TranslationInterface;
use Knp\DoctrineBehaviors\Model\Translatable\TranslationTrait;
/**
* #ORM\Entity
*/
class BlogPostTranslation implements TranslationInterface
{
use TranslationTrait;
/**
* #ORM\Id
* #ORM\Column(type="integer")
* #ORM\GeneratedValue(strategy="AUTO")
*/
private $id;
/**
* #ORM\Column(type="string", length=100)
*/
protected $name;
/**
* #ORM\Column(type="string", length=255)
*/
protected $title;
/**
* #ORM\Column(type="string", length=100)
*/
protected $slug;
/**
* #ORM\Column(type="text", nullable=true)
*/
protected $text;
public function getId(): ?int
{
return $this->id;
}
public function getName(): string
{
return $this->name;
}
public function setName(string $name): void
{
$this->name = $name;
}
public function getTitle(): string
{
return $this->title;
}
public function setTitle(string $title): void
{
$this->title = $title;
}
public function getSlug(): string
{
return $this->slug;
}
public function setSlug(string $slug): void
{
$this->slug = $slug;
}
public function getText(): string
{
return $this->text;
}
public function setText(string $text): void
{
$this->text = $text;
}
}

Answer 1

Be looking at the bundle docs, you should use the TranslatableTrait and not the TranslationTrait for your BlogPost entity.
See the sample here: https://github.com/KnpLabs/DoctrineBehaviors/blob/master/docs/translatable.md