fusenapi/model/gmodel/fs_product_recommend_logic.go

package gmodel

import (
	"context"
	"errors"
	"gorm.io/gorm"
)

type GetRecommendProductListReq struct {
	Ctx      context.Context
	Page     int
	Limit    int
	Category int64 // 0是全部
}

func (r *FsProductRecommendModel) GetRecommendProductList(req GetRecommendProductListReq) (resp []FsProduct, total int64, err error) {
	db := r.db.WithContext(req.Ctx).Select("p.*").
		Table("fs_product_recommend as r").
		Joins("inner join fs_product as p on r.product_id = p.id").
		Where("r.status = ? ", 1).
		Where("and p.is_shelf = ? and p.is_del = ? and p.status = ?", 1, 0, 1)
	if req.Category != 0 {
		db = db.Where("r.category = ?", req.Category)
	}
	if err = db.Limit(1).Count(&total).Error; err != nil {
		return nil, 0, err
	}
	offset := (req.Page - 1) * req.Limit
	err = db.Offset(offset).Limit(req.Limit).Find(&resp).Error
	return resp, total, err
}
func (r *FsProductRecommendModel) GetIgnoreRandomRecommendProductList(ctx context.Context, limit int, category int64, idNotInt []int64) (resp []FsProductRecommend, err error) {
	err = r.db.WithContext(ctx).Model(&FsProductRecommend{}).
		Where("`product_id` not in(?) and `category` = ? and `status` = ?", idNotInt, category, 1).
		Order("RAND()").Limit(limit).Find(&resp).Error
	return resp, err
}
func (r *FsProductRecommendModel) CreateOrUpdate(ctx context.Context, productId int64, category int64, data *FsProductRecommend) error {
	var info FsProductRecommend
	err := r.db.WithContext(ctx).Model(&FsProductRecommend{}).Where("`product_id` = ? and `category` = ?", productId, category).Take(&info).Error
	if err != nil && !errors.Is(err, gorm.ErrRecordNotFound) {
		return err
	}
	if info.Id == 0 {
		return r.db.WithContext(ctx).Model(&FsProductRecommend{}).Create(data).Error
	}
	return r.db.WithContext(ctx).Model(&FsProductRecommend{}).Where("`product_id` = ? and `category` = ?", productId, category).Updates(data).Error
}