kefu/app/admin/model/Admin.php

<?php

namespace app\admin\model;

use app\BaseModel;
class Admin extends BaseModel
{
    
    protected $autoWriteTimestamp = true;
    protected $createTime = 'created_at';
    protected $updateTime = 'updated_at';
    public function role()
{
    return $this->hasOne(Role::class, 'id', 'role_id')->field(['id', 'name']);
}
    public function department()
    {
        return $this->hasOne(Department::class, 'id', 'department_id')->field(['id', 'name']);
    }

    public static function isOnline($id)
    {
        return self::where('id', $id)->value('is_online');
    }

    public static function setOnline($id, $is_online)
    {
        if ($is_online == 0) {
            //结束今日的签到
            $sign = Sign::where('admin_id', $id)->where('created_at', '>=', date('Y-m-d'))->order('id', 'desc')->find();
            if ($sign && $sign->time == 0) {
                $sign->time = time() - strtotime($sign->created_at);
                $sign->updated_at = date('Y-m-d H:i:s');
                $sign->save();
            }
        }
        return self::where('id', $id)->update(['is_online' => $is_online]);
    }
}