FOSRestBundle : ParamFetcher错误

Question

我在我的项目中使用FOSRestBundle，我已经将这个路由配置为可以访问不同类型的数据：

```javascript

/**

 * @Rest\Get("")
 *
 * @Rest\QueryParam(
 *     name="categoriesId",
 *     requirements="[0-9a-zA-Z\- \/_:.,\s]",
 *     default="",
 *     description="The categories ids."
 * )
 * @Rest\QueryParam(
 *     name="orderBy",
 *     requirements="[a-zA-Z0-9]",
 *     default="score",
 *     description="The keyword to search for."
 * )
 * @Rest\QueryParam(
 *     name="order",
 *     requirements="asc|desc",
 *     default="desc",
 *     description="Sort order (asc or desc)"
 * )
 * @Rest\QueryParam(
 *     name="limit",
 *     requirements="\d+",
 *     default="-1",
 *     description="Max number of celebrities returned."
 * )
 * @Rest\QueryParam(
 *     name="offset",
 *     requirements="\d+",
 *     default="0",
 *     description="The offset"
 * )
 *
 * @Rest\View(serializerEnableMaxDepthChecks=true)
 * @param ParamFetcherInterface $fetcher
 * @param EntityManagerInterface $em
 * @return array
 */
public function getAction(ParamFetcherInterface $fetcher, EntityManagerInterface $em) {
    // Get categories
    $categories_id = explode(',', $fetcher->get('categoriesId'));

    $options = [

        'addProfilePicture' => true,

        'addCategories' => true,

    ];

    // Configure limit and order

    if($fetcher->get('limit') !== -1)

        $options['limit'] = $fetcher->get('limit');

    $options['offset'] = $fetcher->get('offset');

    // Configure order

    switch ($fetcher->get('orderBy')) {

        case 'score':

            $options['orderBy'] = 'score';

    }

    $rows = $em->getRepository(Celebrity::class)->findByCategories($categories_id, $options);

    return $rows;

}

但是，当我用Postman调用我的节点时，我有以下错误：

控制器和方法需要通过setController设置

错误来自于ParamFetcher，以及行

$categories_id = explode(',', $fetcher->get('categoriesId'));

你知道这个问题的由来吗？

Answer 1

只需在Symfony的config.yml中启用param取取侦听器：

fos_rest:
    param_fetcher_listener: true