php - Symfony2 - MinLength 验证不起作用 - 未找到 MinLength

Question

我正在尝试在我的 symfony 项目中使用 MinLength 验证器。

下面是我的使用方法:

use Symfony\Component\Validator\Constraints\MinLength;
class RegisterNewUser
{
    protected $password;


    public static function loadValidatorMetadata(ClassMetadata $metadata)
    {
        if( isset( $metadata->properties["password"] ) ) 
            unset($metadata->properties["password"]);


        $password_blank  = new NotBlank();
        $password_min       = new MinLength(5);


        $password_blank->message    = "The password should not be blank";
        $password_min->message     = "The password is too short. It should have {{ limit }} characters or more";


        $metadata->addPropertyConstraint('password', $password_blank);
        $metadata->addPropertyConstraint('password', $password_min );
    }
}

我收到的错误信息是:

FatalErrorException: Error: Class 'Symfony\Component\Validator\Constraints\MinLength' not found in...

Answer 1

我找到了解决方案:

来自 Symfony 文档:

The MinLength constraint is deprecated since version 2.1 and will be removed in Symfony 2.3. Use Length with the min option instead.

所以，解决方案是:

use Symfony\Component\Validator\Constraints\Length;

....

$password_min           = new Length(array('min'=>5));