updateFriend() public method

Update friend link, new when don't exists.
public updateFriend ( $inputs )
$inputs
 /**
  * Update friend links.
  *
  * @param Request $request
  * @return \Illuminate\Http\JsonResponse|\Illuminate\Http\RedirectResponse
  */
 public function friend(Request $request)
 {
     $this->admin->updateFriend($request->all());
     if ($request->ajax()) {
         return response()->json();
     } else {
         return redirect('/settings#link')->with('ok', 'Add friend link successfully');
     }
 }