[View] Integration Zend\View into PPI

[dragoonis]

We need users to be able to render simple templates using Zend\View component.

The implementation should return a string from the controller action which will be executed as the HTTP body.

Bonus points: You return an instance of Zend\View\ModelInterface from the controller action and then tell it to render.

[GeeH]

You can't render from a ViewModel, a ViewModel is just the container for the variables that are passed to the view. You'll need to render from a View Renderer, probably the PhpRenderer. I'm thinking we just need to add a working key in the service manager to return a valid php renderer, create a new view model to pass to it (not sure where at the moment) and then call the addTemplate method to add the templates (phtml files) that need to be rendered. It should then just be a case of calling the render method.

[GeeH]

Maybe use the renderToPlaceholder method actually. I can look into this :)