think-plugs-notice/src/model/NoticeNotice.php

<?php

namespace jerryyan\notice\model;

use think\admin\Model;

class NoticeNotice extends Model
{
    public static function types()
    {
        return static::mk()->group('type')->field('type,count(id) as count')->select();
    }

    /**
     * 获取当前用户未读通知数量
     * @return int
     */
    public static function getUnreadCount()
    {
        $userId = session('user.id');
        if (!$userId) {
            return 0;
        }
        
        return static::mk()
            ->where('staff_id', $userId)
            ->whereNull('read_at')
            ->count();
    }
}