public function validateAction()
 {
     // action body
     $form = new Application_Form_WinsAndWants();
     $form->isValid($this->_getAllParams());
     header('Content-type: application/json');
     echo Zend_Json::encode($form->getMessages());
 }
 public function validateAction()
 {
     // action body
     $this->_helper->viewRenderer->setNoRender();
     $this->_helper->getHelper('layout')->disableLayout();
     $form = new Application_Form_WinsAndWants();
     $form->isValid($this->_getAllParams());
     header('Content-type: application/json');
     echo Zend_Json::encode($form->getMessages());
 }