js__backbone__codeschool1/src/Controllers/TodosController.php

<?php

namespace Controllers;

use Silex\Application;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\HttpKernel\HttpKernelInterface;

class TodosController {

  public function get(Application $app, $id) {
    /** @var \Model $model */
    $model = $app['model'];
    $todos = $model->load();
    $todo = $todos[$id] ?? NULL;
    return $app->json($todo);
  }

  public function put(Application $app, Request $request, int $id) {
    $sub = Request::create('/todos', 'POST', [], [], [], [], $request->getContent());
    return $app->handle($sub, HttpKernelInterface::SUB_REQUEST);
  }

  public function post(Application $app, Request $request) {
    /** @var \Model $model */
    $model = $app['model'];
    $data = json_decode($request->getContent(), true);
    $created = $model->save($data);
    return new Response('Saved', $created ? Response::HTTP_CREATED : Response::HTTP_OK);
  }

  public function delete(Application $app, int $id) {
    /** @var \Model $model */
    $model = $app['model'];
    $deleted = $model->delete($id);
    return new Response(
      $deleted ? 'Deleted' : 'It was not there anyway',
      Response::HTTP_OK
    );
  }
}