laravel自定义分页LengthAwarePagi…

场景：我调用接口 传入分页大小等数据，接口返回总数的和列表

demo   链接：http://www.jb51.net/article/94243.htm

    use Illuminate\Pagination\LengthAwarePaginator;
    use Illuminate\Pagination\Paginator;
    use Illuminate\Http\Request;
# 仅做演示 #
   public function userList(Request $request) {
        $users = [
            ['username'=>'zhangsan', 'age'=>26],
            ['username'=>'lisi', 'age'=>23],
            ['username'=>'wangwu', 'age'=>62],
            ['username'=>'zhaoliu', 'age'=>46],
            ['username'=>'wangmazi', 'age'=>25],
            ['username'=>'lanzi', 'age'=>24],
            ['username'=>'pangzi', 'age'=>21]
        ];
        $perPage = 3;
        if ($request->has('page')) {
            $current_page = $request->input('page');
            $current_page = $current_page <= 0 ? 1 :$current_page;
        } else {
            $current_page = 1;
        }
        $item = array_slice($users, ($current_page-1)*$perPage, $perPage); //注释1
        $total = count($users);
        $paginator =new LengthAwarePaginator($item, $total, $perPage, $currentPage, [
            'path' => Paginator::resolveCurrentPath(), //注释2
            'pageName' => 'page',
        ]);
        $userlist = $paginator->toArray()['data'];
        return view('userlist', compact('userlist', 'paginator'));
    }

本场景代码
public function index(Request $request){
    $paginator =new LengthAwarePaginator([], 100,5, 1, [
        'path' => Paginator::resolveCurrentPath(), //注释2
        'pageName' => 'page',
    ]);
    echo  $paginator->appends(['sort' => 'votes'])->render();
    exit;