Creating a widget using the "[Advanced] Template" renderer

I've been trying for quite some time now to create a widget using the "[Advanced] Template" renderer, specifying the controller name and action.

Can I see a working very basic example of how to use the "[Advanced] Template" renderer together with a template while accessing the $controller - and $response objects?

I need to see a skeleton controller class, how it's defined, what class to extend, parameters, and a very simple action function.
Thanks a lot!

 

I have the following:

Widget options:
Template: helloWorld_view
Controller: HelloWorld_ControllerPublic_Index::actionIndex

Code:

<?php

class HelloWorld_ControllerPublic_Index extends XenForo_ControllerPublic_Abstract
{
    public function actionIndex()
    {
        $params = array(
            'greeting' => "Hello World",
        );

        return $this->responseView('HelloWorld_ViewPublic_Index', 'helloWorld_view', $params);
    }
}
?>

My template, helloWorld_view

Code:

<div style="text-align: center;">
    <h2 style="font-size: 20px;">{$greeting}</h2>
</div>

The error message is:

Code:

The controller HelloWorld_ControllerPublic_Index does not define an action called Actionindex.

 

9 days and still no support. The Webmaster Badge is useless.