在 Symfony 中允许空值但不允许空字符串

Question

I have a case when i try to validate a property of an php PHP object, this property can be null but not empty string. Is it possible to do it with a single annotation like:

class JustAnObject
{
    /**
     * @Assert\NotBlankNullable
     */
     private $Property;
}

Answer 1

Yes it is possible in symfony 4.3 you can do:

namespace App\Entity;

use Symfony\Component\Validator\Constraints as Assert;

class JustAnObject
{
    /**
     * @Assert\NotBlank(allowNull = true)
     */
    private $property;
}