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

Question

我想在我的symfony项目中使用MinLength验证器.

这是我如何使用它:

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 );
    }
}

我得到的错误消息是:

FatalErrorException:错误:在'...中找不到类'Symfony\Component\Validator\Constraints\MinLength'

Answer 1

我找到了解决方案:

从Symfony文档中:

MinLength约束自版本2.1以来已弃用,将在Symfony 2.3中删除.使用长度和最小选项代替.

所以,解决方案是:

use Symfony\Component\Validator\Constraints\Length;

....

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