Constraints violations always empty when use Symfony validator component

Question

I have encourred a strange problem when use a Symfony validator, the constraints violations is always empty even if entity does not respect constraints.

Entity :

use Symfony\Component\Validator\Constraints as Assert;

class Author
{
  /**
  * @Assert\NotBlank()
  */
  public $name;
}

The code to use validator :

$Author = new Author();

$validator = Validation::createValidator();
var_dump( count($validator-> validate($Author)) );

Result : 0

Do you have an idea on the origin of this problem ?

Thanks in advance.

Jérémy

xabbuh · Accepted Answer · 2018-08-17 17:07:45Z

3

You do not use the validator pre-configured by Symfony. Is that intended? Usually you validate objects by either injecting the validator into your service or by pulling it from the container (its id is validator).

In your case, you are going to create a new validator instance. However, if not enabled explicitly, annotation support is turned off. You would have to enable it yourself (but the approach of using the configured validator service as written above is usually what you want to do):

$validator = Validation::createValidatorBuilder()
    ->enableAnnotationMapping()
    ->getValidator();

edited Aug 17, 2018 at 17:07

answered Aug 16, 2018 at 14:30

xabbuh

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1 Comment

COil Over a year ago

As of Symfony 6, we also to have to call ->addDefaultDoctrineAnnotationReader() explicitly. Before, it was done by the enableAnnotationMapping() function.

habibun · Accepted Answer · 2018-08-16 13:54:50Z

0

enabled in the main config file:

# config/packages/framework.yaml
framework:
    validation: { enabled: true }

enable_annotations:

# config/packages/framework.yaml
framework:
    validation: { enable_annotations: true }

official doc: Validation Configuration

answered Aug 16, 2018 at 13:54

habibun

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