Routing to embedded Modules/Bundles/Controllers in Symfony 2 - php

Question

I fully edited this post after doing research:
I'd like to realize a sidebar in the admin section which is integrated in every page, f.e. http://example.com/admin/index/:
class MyController extends Controller {
protected $modules = array();
public function __construct(){
$this->modules[] = "ModuleController:mainAction";
$this->modules[] = "OtherModuleController:mainAction";
}
public function indexAction(Request $request){
// do stuff here
return $this->render("MyBundle:My:index.html.twig",$data);
}
}
In the view should happen something like:
{% block modules %}
{% for module in modules %}
{% render module %}
{% endfor %}
{% endblock %}
So far so good, but these modules can contain forms which send post requests. I'd like to stay on the same page (http://example.com/admin/index/), so the action attribute of the form stays empty. The problem is: The post request will never be recognized by the Modules. So one idea was to hide a field in the according form that contains the name of the route, transform it to the according uri and send a sub request (in MyController):
public function indexAction(Request $request){
if($request->request->has('hidden_module_route')){
// collect all parameters via $request->request->keys()
$uri = $router->generate($request->request->get('hidden_module_route'), $parameters);
// 1: resolve the uri to the according controller and replace the target in the $this->modules array
// or 2: (after step 1)
$req = $request->create($uri, 'POST');
$subresponse = $this->get('kernel')->handle($req,HttpKernelInterface::SUB_REQUEST);
// inject the response into the modules and handle it in the view
}
[...]
}
That would work for me, but I'm not happy to have these responsibilities in the controller and it feels like there should be a better solution (one Idea is to register a kernel.controller listener that handles sub requests and injects the paths to the controller (which perhaps is marked via interface...)).
What do you think?

Answer 1

You could try to send the main request to your modules, so that they can bind the form with it.
{% block modules %}
{% for module in modules %}
{% render module with {'mainRequest': app.request} %}
{% endfor %}
{% endblock %}
And the module:
public function moduleAction(Request $request, Request $mainRequest)
{
$form = ...;
if ($mainRequest->isMethod('POST')) {
$form->bindRequest($mainRequest);
if ($form->isValid()) {
// You can have a beer, that worked
}
}
}