xtu_mall/app/common/model/Attachment.php

<?php
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// +----------------------------------------------------------------------
// | 附件上传模型
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namespace app\common\model;

use think\Model;

class Attachment extends Model
{
    // 自动写入时间戳
    protected $autoWriteTimestamp = true;

    public static function onBeforeInsert($row)
    {
        if (self::where('path', $row['path'])->where('driver', $row['driver'])->find()) {
            return false;
        }
    }

    public function getCategoryAttr($value): string
    {
        return $value == '' ? 'unclassed' : $value;
    }

    public function setCategoryAttr($value)
    {
        return $value == 'unclassed' ? '' : $value;
    }

    /**
     * 获取Mimetype列表
     * @return array
     */
    public static function getMimetypeList()
    {
        $data = [
            "image/*"        => "图片",
            "audio/*"        => "音频",
            "video/*"        => "视频",
            "text/*"         => "文档",
            "application/*"  => "应用",
            "zip,rar,7z,tar" => "压缩包",
        ];
        return $data;
    }

    /**
     * 获取定义的附件类别列表
     * @return array
     */
    public static function getCategoryList(): array
    {
        $data = config('site.attachmentcategory') ?? [];
        // 添加未归类选项
        $data['unclassed'] = '未归类';
        return $data;
    }

    /**
     * 返回上传文件的相关信息
     */
    public function getBaseData()
    {
        $data = [
            'url'      => $this->path,
            'fullurl'  => cdnurl($this->path, true),
            'category' => $this->category,
            'filename' => $this->name,
            'filesize' => $this->size,
            'mimetype' => $this->mime,
        ];
        return $data;
    }
}