<?php

namespace app\common\service;

use app\model\User;

class UserService
{
    public static function getInfo($userId)
    {
        $user = User::with('roles')->find($userId);
        if (!$user) return null;
        return [
            'id' => $user->id,
            'username' => $user->username,
            'roles' => $user->roles->pluck('name')->toArray(),
            // 可扩展其他字段
        ];
    }
}