Symfony发送动作数组

Question

I have template where I have array for entity developers and I need send this array for action, how can do this this action

{% for developer in developers %}
{{ developer.id }}
{% endfor %}
<a href="{{ path('admin_project_send_email', { 'id': entity.id }) }}">send</a>

how send array developers for this action admin_project_send_email

 /**
 * Send email for Developers.
 *
 * @Route("/{id}/send", name="admin_project_send_email")
 * @Method({"GET", "POST"})
 * @Template()
 * @ParamConverter("entity", class="ArtelProfileBundle:Project")
 */
public function sendAction($entity, Request $request)
{
    $value = $request->getSession()->get('developer');
    return array(
        'developers' => $value,
    );
}

I try set in session but if get session variable I have last developer - not array. How can do this with not ajax??