我的控制器代码：

public function usersGroups(Request $request)
   {
    $resultArray = [];

        $users = DB::table('users')
            ->join('user_basic_info','users.id','=','user_basic_info.user_id')
            ->select('users.id','user_basic_info.first_name')->get();
        $resultArray['users'] = $users;

        $groups = DB::table('group')
            ->select('group.id','group.name')->get();
        $resultArray['groups'] = $groups;

    return \Illuminate\Support\Facades\Response::json($resultArray, 200);
}

我的回答是：

{
"users": [
    {
        "id": 1,
        "first_name": "Admin"
    },
    {
        "id": 2,
        "first_name": "Admin"
    },
    {
        "id": 3,
        "first_name": "Admin"
    },
    {
        "id": 4,
        "first_name": "Admin"
    }
],
"groups": [
    {
        "id": 1,
        "name": "Our Lira"
    },
    {
        "id": 2,
        "name": "CM"
    }
  ]
     }

我有一个字段名“first_name”，我想将其更改为“name”，而不更改表中的字段名。对于这个API，我想将first_name改为name。我如何才能做到这一点？