118 lines
2.6 KiB
Go
118 lines
2.6 KiB
Go
package product
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import (
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"sync"
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"time"
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"github.com/qit-team/snow-core/db"
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)
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var (
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once sync.Once
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m *productModel
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)
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/**
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* Product
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*/
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type Product struct {
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Id int64 `xorm:"pk autoincr"` //注：使用getOne 或者ID() 需要设置主键
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Name string
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Price int64
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CreatedAt time.Time `xorm:"created"`
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}
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/**
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* 表名规则
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* @wiki http://gobook.io/read/github.com/go-xorm/manual-zh-CN/chapter-02/3.tags.html
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*/
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func (m *Product) TableName() string {
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return "product"
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}
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/**
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* 私有化，防止被外部new
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*/
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type productModel struct {
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db.Model //组合基础Model，集成基础Model的属性和方法
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}
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// 单例模式
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func GetInstance() *productModel {
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once.Do(func() {
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m = new(productModel)
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//m.DiName = "" //设置数据库实例连接，默认db.SingletonMain
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})
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return m
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}
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/**
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* 查询主键ID的记录
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* @param id 主键ID
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* @return has 是否有记录
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* @return err 错误信息
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* @return product 查询结果
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*/
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func (m *productModel) GetById(id int64) (product *Product, has bool, err error) {
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product = &Product{}
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has, err = m.GetDb().ID(id).Get(product)
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if err != nil || !has {
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product = nil
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}
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return
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}
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func (m *productModel) Search(id int64, name string, startTime string, endTime string, limit int, page int) (product []*Product, err error) {
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product = make([]*Product, 0)
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sql := "1=1"
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var args []interface{}
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if id != 0 {
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sql += " and id = ?"
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args = append(args, id)
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}
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if name != "" {
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sql += " and name = ?"
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args = append(args, name)
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}
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if startTime != "" && endTime != "" {
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sql += " and created_at >= ? and created_at <= ?"
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args = append(args, startTime, endTime)
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}
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err = m.GetDb().Where(sql, args...).Limit(limit, page).Find(&product)
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return
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}
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func (m *productModel) CountAll(id int64, name string, startTime string, endTime string) (res int64, err error) {
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sql := "1=1"
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var args []interface{}
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if id != 0 {
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sql += " and id = ?"
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args = append(args, id)
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}
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if name != "" {
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sql += " and name = ?"
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args = append(args, name)
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}
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if startTime != "" && endTime != "" {
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sql += " and created_at >= ? and created_at <= ?"
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args = append(args, startTime, endTime)
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}
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res, err = m.GetDb().Table("product").Where(sql, args...).Count()
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return
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}
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func (m *productModel) Create(product *Product) (affected int64, err error) {
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affected, err = m.GetDb().Insert(product)
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return
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}
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func (m *productModel) Update(product *Product) (affected int64, err error) {
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affected, err = m.GetDb().ID(product.Id).Update(product)
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return
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}
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func (m *productModel) Delete(id int64) (affected int64, err error) {
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affected, err = m.GetDb().ID(id).Delete(&Product{})
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return
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}
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