<?php

/*

CREATE TABLE `villains` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `name` varchar(255) NOT NULL,
  `mode` varchar(255) NOT NULL,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB  DEFAULT CHARSET=latin1 AUTO_INCREMENT=3 ;

--
-- Dumping data for table `villains`
--

INSERT INTO `villains` VALUES(1, 'Joker', 'employer');
INSERT INTO `villains` VALUES(2, 'Kingpin', '');

*/

class FormVillain extends Zend_Form
{
    public function init()
    {
	$id = new Zend_Form_Element_Select("id");
	$id->setRegisterInArrayValidator(false)->addValidator(
	    new Zend_Validate_Db_RecordExists(
		    array(
			'table' => 'villains',
			'field' => 'id',
			'exclude' => "mode != 'employer'"
		    )
	));

	$this->addElement($id);
    }
}

if (!empty($_POST))
{
    $form = new FormVillain();

    if ($form->isValid($_POST))
    {
	$values = $form->getValues();
	var_dump($values);
    }
    else
	var_dump($form->getMessages());
}

?>

<form method='post'>
    <select name='id'>
	<option value='1'>Joker</option>
	<option value='2'>Kingpin</option>
	<option value='3'>Poison Ivy</option>
    </select>

    <input type='submit' value='submit'/>
</form>