You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: businessListLogic.go
    path of file: ./repos/go-zero-looklook/app/travel/cmd/api/internal/logic/homestay
    
    the code of the file until where you have to start completion: package homestay

import (
	"context"
	"github.com/Masterminds/squirrel"

	"looklook/app/travel/cmd/api/internal/svc"
	"looklook/app/travel/cmd/api/internal/types"
	"looklook/common/tool"
	"looklook/common/xerr"

	"github.com/jinzhu/copier"
	"github.com/pkg/errors"
	"github.com/zeromicro/go-zero/core/logx"
)

type BusinessListLogic struct {
	logx.
    
func (l *BusinessListLogic) BusinessList(req types.BusinessListReq) (*types.BusinessListResp, error) {

	whereBuilder := l.svcCtx.HomestayModel.SelectBuilder().Where(squirrel.Eq{"homestay_business_id": req.HomestayBusinessId})
	list, err := l.svcCtx.HomestayModel.FindPageListByIdDESC(l.ctx, whereBuilder, req.LastId, req.PageSize)
	if err != nil {
		return nil, errors.Wrapf(xerr.NewErrCode(xerr.DB_ERROR), "HomestayBusinessId: %d ,err : %v", req.HomestayBusinessId, err)
	}

	var resp []types.Homestay
	if len(list) > 0 {
		for _, homestay := range list {

			var typeHomestay types.Homestay
			_ = copier.Copy(&typeHomestay, homestay)

			typeHomestay.FoodPrice = tool.Fen2Yuan(homestay.FoodPrice)
			typeHomestay.HomestayPrice = tool.Fen2Yuan(homestay.HomestayPrice)
			typeHomestay.MarketHomestayPrice = tool.Fen2Yuan(homestay.MarketHomestayPrice)

			resp = append(resp, typeHomestay)
		}
	}

	return &types.BusinessListResp{
		List: resp,
	}, nil
}