glhcp/server/app/common/model/Freight.php

<?php
// +----------------------------------------------------------------------
// | likeshop开源商城系统
// +----------------------------------------------------------------------
// | 欢迎阅读学习系统程序代码，建议反馈是我们前进的动力
// | gitee下载：https://gitee.com/likeshop_gitee
// | github下载：https://github.com/likeshop-github
// | 访问官网：https://www.likeshop.cn
// | 访问社区：https://home.likeshop.cn
// | 访问手册：http://doc.likeshop.cn
// | 微信公众号：likeshop技术社区
// | likeshop系列产品在gitee、github等公开渠道开源版本可免费商用，未经许可不能去除前后端官方版权标识
// |  likeshop系列产品收费版本务必购买商业授权，购买去版权授权后，方可去除前后端官方版权标识
// | 禁止对系统程序代码以任何目的，任何形式的再发布
// | likeshop团队版权所有并拥有最终解释权
// +----------------------------------------------------------------------
// | author: likeshop.cn.team
// +----------------------------------------------------------------------


namespace app\common\model;

use app\common\basics\Models;
use app\common\enum\FreightEnum;
use think\facade\Db;

/**
 * 运费模板
 */
class Freight extends Models
{
    protected $name = 'freight';

    protected $autoWriteTimestamp = true;

    public static function getChargeWay($type)
    {
        $data = [
            FreightEnum::CHARGE_WAY_WEIGHT => '按重量计费',
            FreightEnum::CHARGE_WAY_VOLUME => '按体积计费',
            FreightEnum::CHARGE_WAY_PIECE => '按件计费',
        ];

        if ($type === true) {
            return $data;
        }

        return $data[$type] ?? '未知';
    }

    public function getChargeWayTextAttr($value, $data)
    {
        return self::getChargeWay($data['charge_way']);
    }

    public static function getNameColumn($shop_id)
    {
        $lists = self::where(['shop_id'=>$shop_id])->column('id,name', 'id');

        return empty($lists) ? [] : $lists;
    }

    public function configs()
    {
        return $this->hasMany('freight_config', 'freight_id', 'id');
    }

    /**
     * 根据收货地址-商品信息-运费模板id-商品数量计算运费
     */
    public function sumFreight($address, $goods_item, $freight_id, $num)
    {
        //判断用户收货地址适用模板
        $freight_config = FreightConfig::where('freight_id', $freight_id)->select()->toArray();
        $freight_config_item = [];
        foreach ($freight_config as $key => $value) {
            $district_check = strpos($value['region'], (string)$address['district_id']);
            $city_check = strpos($value['region'], (string)$address['city_id']);
            $province_check = strpos($value['region'], (string)$address['province_id']);
            if ($district_check !== false) {//区域匹配模板
                $freight_config_item = $value;
            }
            if ($city_check !== false) {//市匹配模板
                $freight_config_item = $value;
            }
            if ($province_check !== false) {//省匹配模板
                $freight_config_item = $value;
            }
            if ($district_check == false && $city_check == false && $province_check == false) {
                if ($value['region'] == 'all') {
                    $freight_config_item = $value;
                }
            }
        }
        $charge_way = $this->where('id', $freight_id)->value('charge_way');
        $price = 0;//运费
        switch ($charge_way) {
            case $charge_way == 1://重量计费
                $unified_num = $goods_item['weight'] * $num;
                break;
            case $charge_way == 2://体积计费
                $unified_num = $goods_item['volume'] * $num;
                break;
            case $charge_way == 3://件数计费
                $unified_num = $num;
                break;
        }
        if ($unified_num <= $freight_config_item['first_unit']) {//小于首件数
            $price = $freight_config_item['first_money'];
        }
        if ($unified_num > $freight_config_item['first_unit']) {//大于首件数 计算公式=(((商品数量-首件数)/续件数)*续件费用)+首件费用
            $continue_unit = ceil(($unified_num - $freight_config_item['first_unit']) / $freight_config_item['continue_unit']);//续件数向上取整
            $price = ($continue_unit * $freight_config_item['continue_money']) + $freight_config_item['first_money'];
        }
        return $price;
    }
}