Laravel 实现指定用户下的设备分页(与查询指定分类下的文章原理相同)

<?php
//控制器
namespace App\Http\Controllers\Api\User;

use App\Http\Controllers\Controller;
use Illuminate\Http\Request;
use App\Model\User as UserModel;
// 设备区域
class DeviceRegionController extends Controller
{
    public function index(Request $request)
    {
        $token = $request->input('token');
        $limit = $request->input('limit');
        $deviceRegionList = (new UserModel)->where('token', $token)->first()->device_region()->paginate($limit)->toArray();
        $returnData = [];
        $returnData['msg']              = "查询成功";
        $returnData['count']            = $deviceRegionList['total'];
        $returnData['current_page']     = $deviceRegionList['current_page'];
        $returnData['data']             = $deviceRegionList['data'];
        return success($returnData);
    }
}

<?php
// 模型
namespace App\Model;

use Illuminate\Database\Eloquent\Model;

class User extends Model
{
    // 指定表名
    // laravel自动会+s
    protected $table = 'user';
    // 关联设备区域表
    public function device_region()
    {
         // 需要存在 DeviceRegion 模型才可以引入，并且需要与User模型在同一目录下
         return $this->hasMany(DeviceRegion::class);
    }