A WIP implementation of the Responder Layer of Paul Jones' ADR Pattern: https://github.com/pmjones/mvc-refinement

JsonResponder.php

<?php

namespace Core\Responder;

class JsonResponder extends Responder
{
    /**
     * @return \Orno\Http\Response
     */
    protected function respond()
    {
        $this->response->setContent(json_encode($this->parameters));
        $this->response->headers->set('Content-Type', 'application/json');

        return $this->response;
    }
}

Responder.php

<?php

namespace Core\Responder;

use Core\Support\ParameterBagTrait;
use Orno\Http\Response;

abstract class Responder
{
    use ParameterBagTrait;

    /**
     * @return Response
     */
    abstract protected function respond();

    /**
     * @var Response
     */
    protected $response;

    /**
     * @param Response    $response
     */
    public function __construct(Response $response)
    {
        $this->response = $response;
    }

    /**
     * @return Response
     */
    public function __invoke()
    {
        $response = $this->respond();
        $response->setStatusCode($this->getHttpStatus());

        return $response;
    }

    /**
     * Gets the HTTP Status Code for the Response.
     * @return int
     */
    protected function getHttpStatus()
    {
        return 200;
    }
}

ViewResponder.php

<?php

namespace Core\Responder;

use Core\Display\ViewManager;
use Core\Support\ParameterBagTrait;
use Orno\Http\Response;

abstract class ViewResponder extends Responder
{
    /**
     * @var \Core\Display\ViewManager
     */
    protected $viewManager;

    /**
     * @var \Core\Display\View
     */
    protected $view;

    /**
     * @param Response    $response
     * @param ViewManager $viewManager
     */
    public function __construct(Response $response, ViewManager $viewManager)
    {
        parent::__construct($response);
        $this->viewManager = $viewManager;
    }

    /**
     * Loads the given View and renders it, returning the response.
     * @param  string $viewFile
     * @return Response|void
     */
    public function __invoke($viewFile)
    {
        $this->view = $this->viewManager->create($viewFile);
        $this->view->set($this->parameters);

        return parent::__invoke();
    }

    /**
     * Render the view and set the response content.
     * @return Response
     */
    protected function respond()
    {
        $this->response->setContent($this->view->render());

        return $this->response;
    }
}

Nice to see. Are you going to open-source ?

Possibly. Not sure. This is only the Responder Layer (using our custom View layer). Maybe.