Symfony doesn't load my custom validator defined as service - php

Question

I'm trying to inject EntityManagerInterface in my custom validator, but I have this error:
Attempted to load class "validator_check_client_id" from the global namespace.
Did you forget a "use" statement?
My code is:
CheckClientId.php
namespace App\Validator;
use Symfony\Component\Validator\Constraint;
/**
* #Annotation
*/
class CheckClientId extends Constraint{
public $message = 'Test';
public function validatedBy(){
return 'validator_check_client_id';
}
}
CheckClientIdValidator.php
namespace App\Validator;
use Doctrine\ORM\EntityManagerInterface;
use Symfony\Component\Validator\Constraint;
use Symfony\Component\Validator\ConstraintValidator;
class CheckClientIdValidator extends ConstraintValidator{
private $entityManager;
public function __construct(EntityManagerInterface $entityManager) {
$this->entityManager = $entityManager;
}
public function validate($value, Constraint $constraint){
//Todo
return;
}
}
services.yaml
validator.check_client_id:
class: App\Validator\CheckClientIdValidator
autowire: false
arguments:
$entityManager: '#doctrine.orm.entity_manager'
tags:
- {
name: validator.constraint_validator,
alias: validator_check_client_id,
}
Should I do an extra step to register my service? I think that symfony cannot find it because it is not properly registered.
I also tried to do what this answer says symfony validator as service not working, but I get a similar error:
Attempted to load class "app.validator.blog.slug_unique" from the global namespace.
Did you forget a "use" statement?
Do you have any idea what is happening?
Thank you for your help!

Answer 1

Thanks to autowire and autoconfig, all you really have to do is to get your class names right. No changes to services.yaml. Here is a working example using a fresh 5.2 project.
# src/Validator/CheckClientId.php
namespace App\Validator;
use Symfony\Component\Validator\Constraint;
/** #Annotation */
class CheckClientId extends Constraint
{
public $message = 'CheckClientId';
}
# =============================
# src/Validator/CheckClientIdValidator
namespace App\Validator;
use Doctrine\ORM\EntityManagerInterface;
use Symfony\Component\Validator\Constraint;
use Symfony\Component\Validator\ConstraintValidator;
use Symfony\Component\Validator\Exception\UnexpectedValueException;
class CheckClientIdValidator extends ConstraintValidator
{
public function __construct(private EntityManagerInterface $entityManager)
{
}
public function validate($value, Constraint $constraint)
{
dump('validate ' . $value);
throw new UnexpectedValueException($value, 'string');
}
}
# ===============================
# Test Entity
# src/Entity/Client.php
namespace App\Entity;
use App\Validator as AcmeAssert;
class Client
{
/** #AcmeAssert\CheckClientId */
public $id = 42;
}
# ====================================
# Test Command
# src/Command/ValidateCommand
namespace App\Command;
use App\Entity\Client;
use Doctrine\ORM\EntityManagerInterface;
use Symfony\Component\Console\Command\Command;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Output\OutputInterface;
use Symfony\Component\Validator\Validator\ValidatorInterface;
class ValidateCommand extends Command
{
protected static $defaultName = 'test:validator';
public function __construct(private ValidatorInterface $validator)
{
parent::__construct();
}
protected function execute(InputInterface $input, OutputInterface $output): int
{
$client = new Client();
$errors = $this->validator->validate($client);
echo $errors;
return Command::SUCCESS;
}
}
Get the test command working and move on from there.