Symfony, twig传输数据

在symfony中，我有树枝，我想为动作传输数据，但在url中，我不想看到'角色'，只传输动作，如何做到这一点?路由:

artel_admin_index:
path:     /{ida}/edit/{id}/submit
defaults: { _controller: ArtelProfileBundle:Dashboard:edit }
requirements: { _method: POST|GET }

枝:

<td>
<a href="{{ path('artel_admin_index', {'ida': user.id, 'id': developer.id, 'role': user.role }) }}"> {{ developer.firstname }} {{ developer.lastname }}</a>
</td>

行动:

    public function editAction($ida, $id)
{
    $request = $this->get('request');
    $value = $request->getSession()->get('role');
    dump($request, $value);exit;

And I see:

DashboardController.php on line 138:
Request {#7 ▼
+attributes: ParameterBag {#10 ▶}
+request: ParameterBag {#8 ▶}
+query: ParameterBag {#9 ▶}
+server: ServerBag {#13 ▶}
+files: FileBag {#12 ▶}
+cookies: ParameterBag {#11 ▶}
+headers: HeaderBag {#14 ▶}
#content: null
#languages: null
#charsets: null
#encodings: null
#acceptableContentTypes: null
#pathInfo: "/39/edit/116/submit"
#requestUri: "/app_dev.php/39/edit/116/submit"
#baseUrl: "/app_dev.php"
#basePath: null
#method: "GET"
#format: null
#session: Session {#151 ▶}
#locale: null
#defaultLocale: "en"
}
DashboardController.php on line 138:
"ROLE_COMPANY"

I try transmit $role indexAction -> editAction in indexAction I set:

public function indexAction($username)
{
    $user_role = $user->getRoles();
    $request->getSession()->set('role', $user_role[0]);

和form中我有action hoe在这个action中传输这个$role，但是这个role没有添加到routing中:

<td>
  <a href="{{ path('artel_admin_index', {'ida': user.id, 'id': developer.id}) }}"> {{ developer.firstname }} {{ developer.lastname }}</a>
</td>

    $user_role = $user->getRoles();
    $request->getSession()->set('role', $user_role[0]);
    $role = $request->getSession()->get('role');
    dump($user_role, $role);exit;

我看到

UserProfileController.php on line 69:
array:1 [▼
 0 => "ROLE_COMPANY"
]
UserProfileController.php on line 69:
"ROLE_COMPANY"

现在在索引操作我渲染模板?因为现在在indexAction中我渲染了一些数据在模板中我有