how to check if the enddate is after the startdate in a zend form

Posted by murze on Stack Overflow See other posts from Stack Overflow or by murze
Published on 2010-04-16T13:59:46Z Indexed on 2010/04/16 14:03 UTC
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I have a zend form with a start- and an endate.

$form = new Zend_Form();
$form->setName($this->formName)
     ->setMethod('post');

$feStartdate = new Zend_Form_Element_Text('startdate');
$feEnddate = new Zend_Form_Element_Text('enddate');

$form->addElement($feStartDate)
     ->addElement($feEndDate)
     ->addElement('submit', 'submit', array('label' => 'Save'));

I assume I must write a custom validator for to check this. How would this custom validator look like and how can I call it? I assume something like

$feEnddate->addValidator('dateComesAfter', $feStartDate)

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