<?php
 
namespace App\Http\Controllers\Admin; //注意命名空间
 
 
 
use App\Http\Controllers\Controller;
 
use app\privilegeModel;
 
 
 
function index(){
  $model=new \App\PrivilegeModel(); //实例化model
  $data = $model -> getlist(); //调用model层中方法
}

<?php
 
namespace App;
 
use Illuminate\Database\Eloquent\Model;
use DB;
 
class privilegeModel extends Model
{
  /**
   * 查询友情链接
   */
  public function getlist()
  {
    return DB::table('tablename')->get();
  }
}