public function updateAction(Request $request, $id)
{
    $em = $this->getDoctrine()->getManager();

    $entity = $em->getRepository('BlogBlogBundle:Blog')->find($id);

    if (!$entity) {
        throw $this->createNotFoundException('Unable to find Blog entity.');
    }

    $deleteForm = $this->createDeleteForm($id);
    $editForm = $this->createEditForm($entity);
    $editForm->handleRequest($request);

    if ($editForm->isValid()) {
        $editForm->get('date')->setData(date("Y-m-d"));
        $usr= $this->get('security.context')->getToken()->getUser();
        $usr->getUsername();
        $editForm->get('author')->setData($usr);
        var_dump($editForm);
        $em->flush();

        return $this->redirect($this->generateUrl('blogAdmin_edit', array('id' => $id)));
    }

    return $this->render('BlogBlogBundle:Admin:edit.html.twig', array(
        'entity'      => $entity,
        'edit_form'   => $editForm->createView(),
        'delete_form' => $deleteForm->createView(),
    ));
}