Problem: sometimes in our zend controller we don't want the script to be output directly, but rather want the content of that script. One example: when we need the result html output of a view script be included in another structure like JSON or XML for processing in the client side.
I found the result here at stack overflow, but not so quick since it was in a different context. I have been struggling with this for 2 days now. As it turned out it was very simple:
// in our controllers' action method
$this->_helper->layout()->setLayout('empty'); // disable layout
$this->_helper->viewRenderer->setNoRender(true); // make sure the script is not being rendered
// any of your code here
$html = $this->view->render('projects/climate.phtml'); // return the view script content as a string
$json = array('html'=>$html, 'initData'=>'my other needed data');
echo json_encode($json);
I hope this was clear and will be useful to somebody.