Symfony 2 Forward Request passing along GET/POST params

Question

Is it possible to forward a request, passing along all GET/POST params?

I think if I just do

$this->forward('dest')

I will go to dest without any GET/POST params?

UPDATE

My objective is actually to have a controller action like addSomething that takes checks that the user has the sufficient "items" to add something. Then forward the request to the approperiate controller to continue the actual adding of adding{Type}Something

Or would getting a "checking" service in all controllers that does the checking be more appropriate? Anyways, I think its informative to know how to forward to a controller action with all params

Answer 1

I don't see any reason here to forward the request back through the kernel. You can go the route of encapsulating this logic in a checker service, as you've suggested, or you may be able to create a kernel.request listener that runs after the router listener and applies the _controller attribute only if your conditions are met.

For example, this routing.yml:

some_route:
    pattern:  /xyz
    defaults: { _controller_candidate: "FooBundle:Bar:baz" }

And this listener:

class MyListener
{
    public function onKernelRequest($event)
    {
        $request = $event->getRequest();
        if (!$controller = $request->attributes->get('_controller_candidiate')) {
            return;
        }

        if (/* your logic... */) {
            $request->attributes->set('_controller', $controller');
        }
    }
}

Configured to run after the core router listener:

services:
    my_listener:
        class: MyListener
        tags:
            -
                name:     kernel.event_listener
                event:    kernel.request
                priority: -10

The priority of the core router listener is 0 in Symfony 2.0 and 32 in Symfony 2.1. In either case, a priority of -10 should work.

I'm curious to see if this works :)

Answer 2

Easiest solution (and one I'd probably go for) would be to just pass Request class as forward parameter

public function indexAction()
{
    $request = $this->getRequest();

    return $this->forward('AcmeBundle:Forward:new', array('request' => $request));
}

And in forwarded action just use it as method param:

public function testAction($request)
{
    var_dump($request);exit;
}

Answer 3

All POST param are automatically forwarded. No action is needed to have POST param in the target controller. But you have to explicitly pass query (GET) params and path params. The forward method take 2 optionals parameter representing respectively the pathParam and the queryParam arrays. You can just pass all the query param from the current request

public testAction(Request $request){
    $pathParam = array(); //Specified path param if you have some
    $queryParam = $request->query->all(); 
    $response = $this->forward("AcmeBundle:Forward:new", $pathParam, $queryParam);
}

Answer 4

Forwarding "request attributes" as "path" works for me:

public function indexAction()
{
    $path = $this->getRequest()->attributes->all();
    return $this->forward('CompMyBundle:MyController:MyAction', $path);
}

$path['_controller'] will be overwritten in forward() method!