zendframework jquery ajax,Zend Framework and Jquery :: Ajax - Check if id is available - How to?

First thing you should take care while handling AJAX requests in Zend Framework - disable the view/MVC layout component.

In your action,

public function validateAction()

{

if($this->getRequest()->isXmlHttpRequest()) {

//Disable the view/layout

$this->_helper->layout->disableLayout();

$this->_helper->viewRenderer->setNoRender(TRUE);

//Receive the value from the form

$inputValue = $this->_getParam('name');

//Access your model and validate the data.

$model = new Model();

$result = $model->isValid($inputValue);

$myArray = array(

'result'=>$result

);

$jsonData = Zend_Json::encode($myArray);

//Send the result back to the client

$this->response->appendBody($jsonData);

}

}

Receive this JSON object from client side(use jQuery), process it and show the appropriate message.