class ContactPage_Controller extends Page_Controller {

private static $allowed_actions = array('Form');
   public function Form() {

        $fields = new FieldList(
            new TextField('Naam'),
            new EmailField('Email'),
            new TextareaField('Bericht')
        );

		$validator = ZenValidator::create();

		 $validator->addRequiredFields(array(
			'Naam'  => 'Vul hier uw naam in!',
			'Email' => 'Vul hier uw E-mailadres in!',
			'Bericht' => 'Vul hier uw bericht in!'
		));

        $actions = new FieldList(
            new FormAction('submit', 'Verzenden')
        );
        return new Form($this, 'Form', $fields, $actions, $validator);
    }