I am trying to create a custom symfony form validator constraint. I created two class, one constraint and one validator and it works fine. But I need to pass doctrine entitymanager instance to validator class, as I am using them standalone and not framework, I don’t have yaml configuration file. I created a constructor in validator class to have $em, and in controller I have:
->add('email', EmailType::class, [
'constraints' => [
new Assert\Email(['message' => 'invalid.email', 'mode' => 'strict', 'normalizer' => 'trim']),
new Assert\EmailExists($em),
],
]);
But I am not getting $em, in my validator class, what should I do? I also tried to have constructor in main constraint class, then in validator I had parent::construct()
, still not working.
I did read this too https://stackoverflow.com/questions/40601866/how-to-configure-dependencies-on-custom-validator-with-symfony-components but instead of making the factory class, I used the current factor class and used this:
use Symfony\Component\DependencyInjection\ContainerBuilder;
use Symfony\Component\Validator\ContainerConstraintValidatorFactory;
$container = new ContainerBuilder();
$container
->register('customEmailUniqueEntity', 'EmailExistsValidator')
->addArgument($em);
$validatorBuilder = Validation::createValidatorBuilder();
$validatorBuilder->setConstraintValidatorFactory(
new ContainerConstraintValidatorFactory($container)
);
$validator = $validatorBuilder->getValidator();
$violations = $validator->validate('email address', [
new EmailExists()
]);
if (0 !== count($violations)) {
// there are errors, now you can show them
foreach ($violations as $violation) {
echo $violation->getMessage().'<br>';
}
}
With this code both dependency injection and validation works fine, but is there a trick to have this custom constraint as ‘constraint’ array argument within form builder rather than validating it manually?
->add('email', EmailType::class, [
'constraints' => [
new Assert\Email(['message' => 'invalid.email', 'mode' => 'strict', 'normalizer' => 'trim']),
new Assert\EmailExists($em),
],
]);
With code above I cannot pass $em to the constructor of my custom Validator. Any trick possible?