/**
  * Create a new child node
  *
  * @param Request $request
  * @param $id
  * @return \Illuminate\Http\JsonResponse
  */
 public function addChild(Request $request, $id)
 {
     $parent = $this->findModelById($id);
     $name = $request->get('name');
     $child = new Node(['name' => $name]);
     $child->save();
     $child->makeChildOf($parent);
     return Response::json('success');
 }