Symfony2: validation constraint ignored when submitting form and with multiple validation groups

Question

Problem:

The Length constraint is ignored when submitting my form.

Entity:

/**
 * @Assert\Length(min = "6")
 * @Assert\NotBlank(groups={"registro"})
 */
private $password;

---

FormType:

public function setDefaultOptions(OptionsResolverInterface $resolver)
{
    $resolver->setDefaults(array(
    'data_class' => 'BikeApp\UsuariosBundle\Entity\Usuarios',
    'validation_groups' => array('default', 'registro')
    ));     
}

Answer 1

According to the constant Symfony\Component\Validator\Constraint::DEFAULT_GROUP, the default validation group is not default but Default.