I am a beginner in Zend Framework 3 and I want to hear your opinions about the code that I wrote. I don't know how exactly I can connect forms, and validators together that the code will be quite nice and readable.Register method public function registerAction()    {        $form = $this->form;        $viewModel = new ViewModel(['form' => $form]);        $prg = $this->prg('users', false);        if ($prg instanceof \Zend\Http\PhpEnvironment\Response)            return $prg;        elseif ($prg === false)            return $viewModel;        $loginExistsValidator = new NoRecordExists(            [                'table' => 'users',                'field' => 'login',                'adapter' => $this->command->getAdapter()            ]        );        $loginExistsValidator->setMessage('Istnieje ju uytkownik o podanym loginie');        $emailExistsValidator = new NoRecordExists(            [                'table' => 'users',                'field' => 'email',                'adapter' => $this->command->getAdapter()            ]        );        $emailExistsValidator->setMessage('Ten email jest ju zajty...');        $form->setInputFilter(new UsersFilter());        $form->getInputFilter()->get('login')->getValidatorChain()->attach($loginExistsValidator);        $form->getInputFilter()->get('email')->getValidatorChain()->attach($emailExistsValidator);        $form->setData($prg);        if (!$form->isValid())            return $viewModel;        $users = $this->command->addUser($form->getData());        $viewModel->setTemplate('users/register/registerSukcesfull');        return ['users' => $users];    }usersFilter     <?php/** * Created by PhpStorm. * User: Patryk * Date: 2016-10-09 * Time: 12:19 */namespace Users\Filters;use Users\Services\RegisterServices;use Zend\Filter\Callback;use Zend\Filter\StringTrim;use Zend\InputFilter\InputFilter;use Zend\Validator\Db\NoRecordExists;use Zend\Validator\Db\RecordExists;use Zend\Validator\EmailAddress;use Zend\Validator\Regex;use Zend\Validator\StringLength;class UsersFilter extends InputFilter{    public function __construct()    {        $this->add([                'name' => 'login',                'required' => true,                'filters' => [                    [                        'name' => StringTrim::class                    ]                ],                'validators' => [                    [                        'name' => StringLength::class,                        'options' => [                            'min' => 5                        ]                    ],                ],            ]        );        $this->add([                'name' => 'password',                'required' => true,                'validators' => [                    [                        'name' => StringLength::class,                        'options' => [                            'min' => 12                        ]                    ],                ],            ]        );        $this->add([                'name' => 'email',                'required' => true,                'validators' => [                    [                        'name' => EmailAddress::class,                        'options' =>                        [                            'domains' => true                        ]                    ]                ]        ]);    }}
Zend Framework Form Validation Example
beginner;php;form;zend framework