blog_tp6/app/model/SysRole.php

<?php
namespace app\model;

use \think\Model;

class SysRole extends Model
{
    protected $pk = 'roleid';

    public function getIdNameList()
    {
        return $this->column('id, name');
    }

    public function getpermissionIds($id)
    {
        return $this->where('id', $id)->value('permissions');
    }
}