如何在 laravel DB::select 查询中使用分页

Question

我正在 Laravel 中开发一个项目并使用 DB facade 运行 sql 的原始查询。在我的例子中，我使用的是 DB::select，问题是分页方法不适用于此数据库原始查询并显示此错误

Call to a member function paginate() on array

我只想知道如何使用 DB 原始查询实现 laravel 分页，这是我的代码：

 <?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use App\Notice;
use Illuminate\Support\Facades\DB;
use Illuminate\Pagination\Paginator;
use Illuminate\Pagination\LengthAwarePaginator;

class NoticeController extends Controller
{

public function index(){

    $notices = DB::select('select
notices.id,notices.title,notices.body,notices.created_at,notices.updated_at,
    users.name,departments.department_name
    FROM notices
    INNER JOIN users ON notices.user_id = users.id
    INNER JOIN departments on users.dpt_id = departments.id
    ORDER BY users.id DESC')->paginate(20);

    $result = new Paginator($notices,2,1,[]);

    return view('welcome')->with('allNotices', $notices);
 }
}

原文由 Umair Gul 发布，翻译遵循 CC BY-SA 4.0 许可协议

Answer 1

尝试：

 $notices = DB::table('notices')
        ->join('users', 'notices.user_id', '=', 'users.id')
        ->join('departments', 'users.dpt_id', '=', 'departments.id')
        ->select('notices.id', 'notices.title', 'notices.body', 'notices.created_at', 'notices.updated_at', 'users.name', 'departments.department_name')
        ->paginate(20);

原文由 MohamedSabil83 发布，翻译遵循 CC BY-SA 3.0 许可协议

Answer 2

public function index(Request $request){

$notices = DB::select('select notices.id,notices.title,notices.body,notices.created_at,notices.updated_at,
users.name,departments.department_name
FROM notices
INNER JOIN users ON notices.user_id = users.id
INNER JOIN departments on users.dpt_id = departments.id
ORDER BY users.id DESC');

$notices = $this->arrayPaginator($notices, $request);

return view('welcome')->with('allNotices', $notices);

}

public function arrayPaginator($array, $request)
{
    $page = Input::get('page', 1);
    $perPage = 10;
    $offset = ($page * $perPage) - $perPage;

    return new LengthAwarePaginator(array_slice($array, $offset, $perPage, true), count($array), $perPage, $page,
        ['path' => $request->url(), 'query' => $request->query()]);
}

原文由 Tymur Abdullaiev 发布，翻译遵循 CC BY-SA 3.0 许可协议