[3.0.1] Uniqueness validator not implement Phalcon\ValidationInterface

[wolftankk]

Uncaught TypeError: Argument 1 passed to Phalcon\Mvc\Model::validate() must implement interface Phalcon\ValidationInterface, instance of Phalcon\Validation\Validator\Uniqueness

use Phalcon\Mvc\Model,
    Phalcon\Db\Column,
    Phalcon\Validation\Validator\Uniqueness;    

class Test extends Model {
    public function validation() {
        $a = new Uniqueness(
            array(
                "field"   => "telephone",
                "message" => "error"
            )
        );
        return $this->validationHasFailed() != true;
    }
}

Uniqueness has implemented Phalcon\Validation\ValidatorInterface

[Jurigag]

return $this->validationHasFailed() != true;

This is code from 2.0.x. Check blog post about new validation https://blog.phalconphp.com/post/phalcon-3-0-0-released

It should look like this:

public function validation()
{
     $validator = new Validation();

        $validator->add(
            'telephone',
            new Uniqueness([
                'message' => 'error',
            ])
        );

        return $this->validate($validator);
}