symfony 4.1 Unable to generate a URL

in my synfony app I have two controllers: The ActionController is supposed to simply render a template containing a form. Submitting the form, I want to send a GET request to the SpreadSheetControllers getSpreadSheet() method.

This is the ActionController:

namespace App\Controller;

use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
use Symfony\Component\Routing\Annotation\Route;
use Symfony\Component\Form\Extension\Core\Type\SubmitType;

class ActionController extends AbstractController {

  /**
   * @Route("/action")
   */
  public function action() {

    $form = $this->createFormBuilder()
        ->setAction($this->generateUrl('/spreadSheet'))
        ->setMethod('GET')
        ->add('save', SubmitType::class, array('label' => 'Action'))
        ->getForm();

    return $this->render('action.html.twig', array(
        'form' => $form->createView(),
    ));

  }

}

And here is the SpreadSheetController:

namespace App\Controller;

use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
use Symfony\Component\Routing\Annotation\Route;
use Symfony\Component\HttpFoundation\Response;

class SpreadSheetController extends AbstractController {

  /**
   * @Route("/spreadSheet")
   */
  public function getSpreadSheet() {
    return new Response(
        '<html><body>spreadSheet</body></html>'
    );
  }

}

Still, when browsing http://localhost:8000/action I get a RouteNotFoundException: Unable to generate a URL for the named route "/spreadSheet" as such route does not exist.

Does anybody know why the route isn't found??

Solution

You have to reference the name of the route, not the actual url. Name your route like so:

/**
 * @Route("/spreadSheet", name="spreadsheet")
 */

Then reference that name in your ActionController:

    ->setAction($this->generateUrl('spreadsheet'))