isValid in zend framework form returns FALSE

zend-form, zend-framework

Solution

To answer the question of 'why', have you dumped the form error messages?

$form->getMessages(); //error messages
$form->getErrors(); //error codes
$form->getErrorMessages(); //any custom error messages

That might at least give you a better idea of 'why'.

Problem

I have zend framework controller. In init method i create a form and fill the drop-down box with ``` $form = new FORM_NAME(); $form->getElement('ZdGroup')->addMultiOptions($zendesk_groups); ``` then in action i check ``` $formData = $this->getRequest()->getParams(); if ($form->isValid($formData)) { ... } ``` but `isValid()` returns `FALSE` if I delete this line `$form->getElement('ZdGroup')->addMultiOptions($zendesk_groups);` it return `TRUE`. I don't understand why, does anybody have an idea?

Original source