fusenapi/model/gmodel/fs_shopping_cart_logic.go

package gmodel

import "context"

// 获取用户购物车数量
func (s *FsShoppingCartModel) CountUserCart(ctx context.Context, userId int64) (total int64, err error) {
	err = s.db.WithContext(ctx).Where("user_id = ?", userId).Limit(1).Count(&total).Error
	return total, err
}

// 获取单个
func (s *FsShoppingCartModel) FindOne(ctx context.Context, id int64, fields ...string) (resp *FsShoppingCart, err error) {
	db := s.db.WithContext(ctx).Where("id = ?", id)
	if len(fields) > 0 {
		db = db.Select(fields[0])
	}
	err = db.Take(&resp).Error
	return resp, err
}

// 获取多个
func (s *FsShoppingCartModel) GetAllByIds(ctx context.Context, ids []int64, sort string, fields ...string) (resp []FsShoppingCart, err error) {
	if len(ids) == 0 {
		return
	}
	db := s.db.WithContext(ctx).Where("id in (?)", ids)
	if len(fields) > 0 {
		db = db.Select(fields[0])
	}
	if sort != "" {
		db = db.Order(sort)
	}
	err = db.Find(&resp).Error
	return resp, err
}

// 获取用户所有的购物车
func (s *FsShoppingCartModel) GetUserAllCarts(ctx context.Context, userId int64, sort string, fields ...string) (resp []FsShoppingCart, err error) {
	db := s.db.WithContext(ctx).Where("user_id = ?", userId)
	if len(fields) > 0 {
		db = db.Select(fields[0])
	}
	if sort != "" {
		db = db.Order(sort)
	}
	err = db.Find(&resp).Error
	return resp, err
}