Variable No Longer Exists after Creating Subrequest in Silex (Symfony2) - symfony

Question

I have this issue where I'm attempting to create a subrequest in Silex and basically forward my parameters to another controllers. Exhibit A is broken below (after attempts to refactor), and Exhibit B, the original version, works:
Exhibit A ($this->app is lost after creating the request):
class EntriesController {
private $app;
private $req;
public function __construct($app, $req) {
$this->app = $app;
$this->req = $req;
}
public function updateAction() {
//...
//$url defined here (eyesore-ingly long, so not shown)
$subRequest = Request::create($url, 'GET', $params, $this->req->cookies->all(), array(), $this->req->server->all());
//$this->app **no longer** exists here
return $this->app->handle($subRequest, HttpKernelInterface::SUB_REQUEST);
}
}
EntriesController instance is created below:
class AppControllerProvider implements ControllerProviderInterface {
public function connect(Application $app) {
$controllers = $app['controllers_factory'];
//...
$controllers->patch('/edit', function (Request $req) use ($app) {
$entriesCtrl = new \EntriesController($app, $req);
return $entriesCtrl->updateAction();
});
//...
}
Exhibit B (works just fine):
class AppControllerProvider implements ControllerProviderInterface {
public function connect(Application $app) {
$controllers = $app['controllers_factory'];
$controllers->patch('/edit', function (Request $req) use ($app) {
//...
//$url defined here
$subRequest = Request::create($url, 'GET', $params, $this->req->cookies->all(), array(), $this->req->server->all());
return $this->app->handle($subRequest, HttpKernelInterface::SUB_REQUEST);
}
//...
});
I basically just reorganized the logic from Exhibit B's 'PATCH' /edit method body into a controller class, and I passed the Silex Application instance $app to a new instance of the controller class.

Answer 1

The only difference between Exhibit A and Exhibit B as far as I can tell is that you instantiate a controller object in the path method callback. Maybe there is something wrong with how this controller is setup or a namespace issue? Shootin' in the dark here.
I can confirm that in my silex application the following code does not produce a null $app container:
GlobalControllerProvider.php
<?php
namespace Dev\Pub\Provider\Controller;
use Silex\Application;
use Silex\ControllerProviderInterface;
use Symfony\Component\HttpFoundation\Request;
class GlobalControllerProvider implements ControllerProviderInterface
{
public function connect(Application $app)
{
$controllers = $app['controllers_factory'];
$controllers
->get('/', 'Dev\Pub\Controller\GlobalController::indexAction')
->bind('homepage')
;
$controllers
->patch('/edit', function (Request $req) use ($app) {
$entriesCtrl = new \Dev\Pub\Controller\GlobalController();
return $entriesCtrl->updateAction($app, $req);
});
return $controllers;
}
}
GlobalController.php
<?php
namespace Dev\Pub\Controller;
use Silex\Application;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\HttpKernel\HttpKernelInterface;
class GlobalController
{
public function indexAction(Application $app, Request $request)
{
return new Response($app['twig']->render('index.html.twig'));
}
public function updateAction(Application $app, Request $request)
{
$url = 'http://silex.local/index_dev.php/';
$params = array();
$subRequest = Request::create($url, 'GET', $params, $request->cookies->all(), array(), $request->server->all());
// outputs: 'Silex\Application'
error_log(print_r(get_class($app),1).' '.__FILE__.' '.__LINE__,0);
// outputs: 1
error_log(print_r(is_object($app),1).' '.__FILE__.' '.__LINE__,0);
return $app->handle($subRequest, HttpKernelInterface::SUB_REQUEST);
}
}
index.main.js
$(function(){
console.log('index.main.js');
$.ajax({
url: "http://silex.local/index_dev.php/edit",
method: "PATCH"
}).done(function( data ) {
console.log(data);
}).fail(function( data ) {
console.log(data);
});
});