FOSRestBundle can't get param fetcher

Question

I'm trying to make my controller work with param fetcher. I did all instructions specified in the documentation. So what I have: config fos_rest.yml:

fos_rest:
  param_fetcher_listener: 'force'
  view:
      formats:
          json: true
          xml: false
          rss: false
      mime_types:
          json: ['application/json', 'application/x-json', 'application/vnd.example-com.foo+json']
          png: 'image/png'
      failed_validation: HTTP_BAD_REQUEST
      default_engine: twig
      view_response_listener: 'force'
  format_listener:
      default_priorities:
          - json
  routing_loader:
      default_format: json

sensio_framework_extra: view: { annotations: false } router: { annotations: true }

And my controller

<?php

namespace Push\PointsBundle\Controller;

use Symfony\Bundle\FrameworkBundle\Controller\Controller;
use Nelmio\ApiDocBundle\Annotation\ApiDoc;
use FOS\RestBundle\View\View;
use FOS\RestBundle\Controller\Annotations\QueryParam;
use FOS\RestBundle\Request\ParamFetcherInterface;
use FOS\RestBundle\Controller\Annotations\RequestParam;
use FOS\RestBundle\Request\ParamFetcher;

class RestController extends Controller
{
    /**
     * @QueryParam(name="latitude", requirements="[0-9.]+", default="0", description="")
     * @ApiDoc()
     */
    public function checkPointsAction(ParamFetcher $params)
    {
        $view = new View();
        return $this->get('fos_rest.view_handler')->handle($view);
    }
}

When I calls method I get:

Controller "Push\PointsBundle\Controller\RestController::checkPointsAction()" requires that you provide a value for the "$params" argument (because there is no default value or because there is a non optional argument after this one).

What I did wrong or missed something? Thank you.

Answer 1

I often have problems with FOSRestBundle and outdated cache. It simply doesn't refresh sometimes if I make a change in annotations. First, try removing contents of your app/cache directory (rm -rf app/cache/*).

I didn't check if parameters are mapped to method arguments by a type or a name. If it's the later than your parameter should be called $paramFetcher (not $params):

public function checkPointsAction(ParamFetcher $paramFetcher) { }

Edit: have you enabled param fetcher listener?

fos_rest:
    param_fetcher_listener: true

Answer 2

I had the same issue, as pointed out in the comment. I solved this by changing the Variable name from

  public function addMapAction(ParamFetcher $pf) {

to

  public function addMapAction(ParamFetcher $paramFetcher) {

And all the sudden i worked like a charm, apparently $paramFetcher is required.