How to fix user registration error on phalcon?

Question

PHP

I started to learn placon and stumbled on this lesson
https://docs.phalconphp.com/ru/latest/reference/tu...
When I downloaded the invo example, I installed its database from the schemas folder.
Then, when registering a user, an error began to pop up:
Catchable fatal error: Argument 1 passed to Phalcon\Mvc\Model::validate() must implement interface Phalcon\ValidationInterface, instance of Phalcon\Mvc\Model\Validator\Email given in C:\ www\OpenServer\domains\localhost\invo\app\models\Users.php on line 13
At the same time, when I log in as [email protected], then everything is authorized and it is from the database
Users.php code

<?php

use Phalcon\Mvc\Model;
use Phalcon\Mvc\Model\Validator\Email as EmailValidator;
use Phalcon\Mvc\Model\Validator\Uniqueness as UniquenessValidator;

class Users extends Model
{
    public function validation()
    {
        $this->validate(new EmailValidator(array(
            'field' => 'email',
        )));
        $this->validate(new UniquenessValidator(array(
            'field' => 'email',
            'message' => 'Sorry, The email was registered by another user'
        )));
        $this->validate(new UniquenessValidator(array(
            'field' => 'username',
            'message' => 'Sorry, That username is already taken'
        )));
        if ($this->validationHasFailed() == true) {
            return false;
        }
    }
}

Answer 1

What version of the framework are you using?
In version 2.1, the developers abandoned the separate validator in the models (in my opinion, this is the right decision).
Use Validation:

<?php
use Phalcon\Mvc\Model;
use Phalcon\Validation;
use Phalcon\Validation\Validator\Email as EmailValidator;
use Phalcon\Validation\Validator\Uniqueness as UniquenessValidator;

class Users extends Model
{
    public function validation()
    {
        $validation = new Validation();

        $validation
            ->add('email', new EmailValidator())
            ->add('email', new UniquenessValidator(array(
                'model'   => $this,
                'message' => 'Sorry, The email was registered by another user'
            )))
            ->add('username', new UniquenessValidator(array(
                'model'   => $this,
                'message' => 'Sorry, That username is already taken'
            )));

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

And if anything, you can display errors in the controller using the flash method , of course, passing your model to it:

<?php
// ...

$user = new Users;

foreach ($user->getMessages() as $message) {
    $this->flash->error($message->getMessage());
}

// ...

PS The framework is developing, the documentation is outdated :)