bookpermit

id | userfk  | bookfk   |
1  | 6       | 6        |
2  | 6       | 7        |
3  | 7       | 7        |
4  | 8       | 8        |
books

id | name  | uerfk   |
1  | xyz1   | 6       |
2  | xyz2   | 7       |
3  | xyz3   | 8       |

display_book_by_permission:
    pattern:  /displaybookbypermission/{user}
    defaults: { _controller:  xxxBundle:Books:display, _format: ~ }
    requirements:
        _method: GET

/**
 * @Route("/displaybookbypermission/{user}/{bookpermit}")
 * @ParamConverter("user", class="xxxxBundle:Users")
 * @ParamConverter("bookpermit", class="xxxxBundle:BookPermit")
 * @Template()
 */
public function displayAction(Request $request, $user, $bookpermit)
    {
         $em = $this->getDoctrine()->getManager();
    $bookLists= $em->getRepository("xxxBundle:Books")->findBy(
        array(
            "usersfk" => $user,
            "usersfk" => $bookpermit
        )
    );

    $data = array();

    foreach ($bookLists as $bookList)
    {

        array_push($data, $this->serialize($bookLists));
    }


    $response = new Response(json_encode($data), 200);
    $response->headers->set('Content-Type', 'application/json');

    return $response;
    }

http://localhost:88/books/web/app_dev.php/displaybookbypermission/6