Symfony - Check if controller exists

Question

My situation: I have a NavigatorController which is triggered by AJAX requests, and will

$this->forward("controllername")

the request. But how can I check if the controller exists based on controller name? Of course, BEFORE the actual forward happens and throws an error when the page controller does not exists.

Answer 1

You can actually use the controller_resolver service that Symfony uses in order to check if controller exists.

public function indexAction(Request $request)
{
    $request->attributes->set('_controller', 'AppBundle\Controller\ExampleController::exampleAction');
    try{
        $this->get('debug.controller_resolver')->getController($request);
    } catch (\Exception $e) {
        $x = $e->getCode();
    }
}

Hope it helps!