So I have a form that is using a custom filter (which is really just a copy of Zend_Filter_Null). When I call it directly, it works:
$makeZeroNull = new My_Filter_MakeZeroNull();
$null = $makeZeroNull->filter('0');
//$null === null
However, when I try to add it to an element in my form, it doesn't filter the value when I call getValue().
class My_Form extends Zend_Form {
public function init() {
$makeZeroNull = new My_Filter_MakeZeroNull();
$this->addElement('text', 'State_ID', array('filters' => array($makeZeroNull)));
}
}
//in controller
if ($form->isValid($_POST)) {
$zero = $form->State_ID->getValue();
//getValue() should return null, but it is returning 0
}
What is going on? What am I doing wrong?
