ATK4.3_Form.php

<?php

class Form_Register extends Form {
    function init(){
        parent::init();

        $this->addField('Line','email')->validateNotNull();
        $this->addField('Password','password')->validateNotNull();
        $this->addSubmit('Register');

        $this->onSubmit(function($f) {

            // Let's see if account with this email exists;
            $m=$f->add('Model_User');

            if($m->tryLoadBy('email', strtolower($f['email']))->loaded())
                return $this->error('email','This email already exists. Use password reminder?');

            $f->add('Controller_Validator')
                ->is('email|email')
                ->is('password|len|>4?Password is too short')
                ->is('password|crack')
                ->now()
                ;

            $this->add('Model_User')->register($this->get('email'),$this->get('password'));

            return 'Thank you. Check your email to complete registration process.';
        });
    }
}