golang基础-Postgresql-ORM框架github.com/go-pg/pg学习五(实战)
Posted 易辰_
tags:
篇首语：本文由小常识网(cha138.com)小编为大家整理，主要介绍了golang基础-Postgresql-ORM框架github.com/go-pg/pg学习五(实战)相关的知识，希望对你有一定的参考价值。
文章目录
golang基础-Postgresql-ORM框架github.com/go-pg/pg学习一(连接数据库、创建、删除表)
golang基础-Postgresql-ORM框架github.com/go-pg/pg学习二(增删改)
golang基础-Postgresql-ORM框架github.com/go-pg/pg学习三(QueryOne、Query、Select用法)
golang基础-Postgresql-ORM框架github.com/go-pg/pg学习四(其他)
以上4篇是总结了，golang中关于对pg对学习，今天就来总结下实例代码
接口介绍
接口如下：
1、完成支付后台接口
CreateWXOrder 创建订单
UpdateOrderById 通过ID修改订单字段值
UpdateOrderByOrderNum 修改订单字段值,这里是通过订单编号
GetOrderByNum 通过编号查询订单
GetOrderById 通过ID查询订单
GetCourseByOrderNum 通过单号，查询每笔订单关联的课程列表
UpdateOrderByOrderNum1修改订单字段值,这里是通过订单编号(方法二)
GetOrdersByCertainTime 获取某个时间段内的订单
GetOrdersForUser 获取一个用户的所有订单
GetOrdersByCertainTimeForUser 获取一个用户特性时间断的订单
接口代码
我这里就不去一个个接口分析了，之前已经总结过，我就直接贴代码了
我在数据库生成的数据如下：
package main
import (
"bytes"
"fmt"
"github.com/go-pg/pg"
"github.com/go-pg/pg/orm"
_ "github.com/lib/pq"
"github.com/pkg/errors"
"time"
)
const (
host = "localhost"
port = 5432
user = "wyfzhiliao"
password = "wyfzhiliao"
dbname = "go"
)
func connet() *pg.DB
db:=pg.Connect(&pg.Options
User:user,
Password:password,
Database:dbname,
)
var n int
_,err:=db.QueryOne(pg.Scan(&n),"SELECT 1")
if err != nil
panic(err)
return db
type Order struct
tableName struct `sql:"u_order",pg:",discard_unknown_columns"`
Id string `sql:"id,pk,type:varchar(40)"` //ID
AppId string `sql:"app_id,type:varchar(40)"` //公众账号String(32)
MchId string `sql:"mch_id,type:varchar(40)"`//商户String(32)
NonceStr string `sql:"nonce_str,type:varchar(40)"`//随机字符String(32)
Sign string `sql:"sign,type:varchar(40)"`//签名String(32)
SignType string `sql:"sign_type,type:varchar(40)"`//签名类型String(32)
Body string `sql:"body,type:varchar(130)"` //订单描述String(128)
//Detail string `sql:"body,type:varchar(6000)"` //商品详情String(128)
OutTradeNo string `sql:"out_trade_no,type:varchar(40)"`//订单号String(32)
TotalFee int `sql:"total_fee,type:int"` //总费用单位为分
FeeType string `sql:"fee_type,default:'CNY',type:varchar(10)"` //费用类型String(16) CNY
SpbillCreateIp string `sql:"spbill_create_ip,type:varchar(20)"`//APP和网页支付提交用户端ipString(16)
TimeStart time.Time `sql:"time_start,default:now(),type:timestamptz"`//String(14)交易开始时间 yyyyMMddHHmmss，如2009年12月25日9点10分10秒表示为20091225091010
TimeExpire time.Time `sql:"time_expire,default:now(),type:timestamptz"`//String(14)交易结束时间 yyyyMMddHHmmss，如2009年12月25日9点10分10秒表示为20091225091010
TradeType string `sql:"trade_type,type:varchar(20)"`//交易类型 JSAPI 公众号支付 NATIVE 扫码支付 APP APP支付 String(16)
WechatOpenId string `sql:"wechat_open_id,type:varchar(130)"`//微信公众号，用户标识 String(128)
WechatUnionId string `sql:"wechat_union_id,type:varchar(130)"`//只有在用户将公众号绑定到微信开放平台帐号后，才会出现该字段。
WechatPayKey string `sql:"wechat_pay_key,type:varchar(40)"`//key为商户平台设置的密钥key
UserId string `sql:"user_id,type:varchar(40)"`//下单关联的用户
Platform string `sql:"platform,type:varchar(20)"`//订单来源 公众号或者pc
PayCourses []string `sql:"pay_courses,type:text[]"`//订单关联的课程
PayStatus int `sql:"pay_status,type:int"` //交易状态 0预付 1成功 -1失败/取消
func CreateTabel(db *pg.DB) error
for _,model:= range []interface&Order
err:=db.CreateTable(model,&orm.CreateTableOptions
IfNotExists:true,
FKConstraints:false,
)
if err!= nil
fmt.Println(err)
return err
return nil
func main()
db:=connet()
fmt.Println("db",db)
CreateTabel(db)
payCourse:=[]string"1","3","4"
course_order:=&Order
Id:"4",
AppId:"11111",
MchId:"22222",
NonceStr:"werwerwl",
Sign:"jlkwejkflwjel",//SetOrder返回
Body:"课程很好",
OutTradeNo:"2343200000",
TotalFee:23232,
SpbillCreateIp:"sdfsf",
TradeType:"spa",
WechatOpenId:"234234",
WechatUnionId:"llj2ljk",
WechatPayKey:"ljl34ll[[[",
UserId:"342344",
Platform:"1",//公众号
PayCourses:payCourse,
PayStatus:1,
CreateWXOrder(db,course_order)
//通过ID获取订单
//order,er:=GetOrderById(db,"1")
//fmt.Println(order,"---",er)
//通过编号获取订单
//order,err := GetOrderByNum(db,"24322342089")
//fmt.Println(order,"----",err)
//通过ID修改订单
//updateOrder:=Order
// Id:"1",
//
//er=UpdateOrderById(db,&updateOrder, func(order_parms *Order)
// order_parms.WechatPayKey = "yyyyyyyyyy66666"
//)
//通过订单编号修改订单
//user:=&Order
// //Id:25,
// Body:"67776urruu",
// Sign:"saferrr",
// Platform:"sfs",
// WechatPayKey:"yyyyyyyyyy66666",
//
db.Model(user).Set("body=?body,sign=?sign").Where("platform=?platform and wechat_pay_key=?wechat_pay_key").Update()
//通过订单编号修改订单
//var setParms = map[string]string"body":"body", "sign":"sign",
//var whereParms = map[string]string"wechat_pay_key":"wechat_pay_key",
//UpdateOrderByOrderNum(db,setParms, whereParms,func(order_params *Order)
// *order_params=Order
// Body:"我是新的bodyeee",
// Sign:"jjel",
// WechatPayKey:"yyyyyyyyyy66666",
//
/*或者如下的方式也可以*/
//order_params.Body = "我是新的body"
//order_params.Sign = "jlkwejkflwjel"
//order_params.WechatPayKey = "yyyyyyyyyy66666"
//)
//通过订单编号获取课程列表
//order,_:= GetCourseByOrderNum(db,"24322342089")
//fmt.Println("payCourse",order,reflect.TypeOf(order))
//获取特定时间段的订单
//orders,_:=GetOrdersByCertainTime(db,"2018-11-06 16:01:17","2018-11-06 18:08:43")
//获取某个用户特定时间段的订单
//orders,_:=GetOrdersByCertainTimeForUser(db,"342344","2018-11-06 16:01:17","2018-11-07 09:32:52")
//fmt.Println(orders)
//获取用户的所有订单
//orders,_:=GetOrdersForUser(db,"3423")
db.Model(user).Set("body=?body,sign=?sign").Where("platform=?platform and wechat_pay_key=?wechat_pay_key").Update()
//通过订单编号更新订单
order:=&Order
OutTradeNo:"24322342089",
UpdateOrderByOrderNum(db,order, func(order *Order)
order.Body = "我已经被修改"
)
//todo 查询
func Str2TimeTemp(formatTimeStr string) time.Time
timeLayout := "2006-01-02 15:04:05"
loc, _ := time.LoadLocation("Local")
theTime, _ := time.ParseInLocation(timeLayout, formatTimeStr, loc) //使用模板在对应时区转化为time.time类型
return theTime
/*查询用户的所有订单 按订单时间降序*/
func GetOrdersForUser(db *pg.DB,userId string)(*[]Order,error)
order:=new([]Order)
err:=db.Model(order).Where("user_id =?",userId).Order("time_expire DESC").Select()
if err!= nil
fmt.Println("error",err)
return nil,errors.Wrapf(err, "GetOrdersForUser order by userId error, id:%s ",userId)
return order,nil
/*查询某个用户某个时间段位的订单*/
func GetOrdersByCertainTimeForUser(db *pg.DB,userId string,startTimeStr string,endTimeStr string) (*[]Order,error)
time_start:=Str2TimeTemp(startTimeStr)
time_end:=Str2TimeTemp(endTimeStr)
order:=new([]Order)
err:=db.Model(order).Where("time_start >= ?",time_start).
Where("time_expire <= ?",time_end).Where("user_id = ?",userId).Select()
if err!=nil
return nil,errors.Wrap(err, "GetOrdersByCertainTime order by time error, id: ")
return order,nil
/*查询某个时间段位的订单*/
func GetOrdersByCertainTime(db *pg.DB,startTimeStr string,endTimeStr string) (*[]Order,error)
time_start:=Str2TimeTemp(startTimeStr)
time_end:=Str2TimeTemp(endTimeStr)
//func new(Type) *Type
order:=new([]Order)
err:=db.Model(order).Where("time_start >= ?",time_start).
Where("time_expire <= ?",time_end).Select()
if err!=nil
fmt.Println("err",err)
return nil,errors.Wrap(err, "GetOrdersByCertainTime order by time error, id: ")
return order,nil
/*通过单号，查询每笔订单关联的课程列表*/
func GetCourseByOrderNum(db *pg.DB,orderNum string)([]string,error)
order:=new(Order)
err:= db.Model(order).Column("pay_courses").Where("out_trade_no = ?",orderNum).Select()
if err!=nil//查询不到
return nil,err
return order.PayCourses,nil
/*通过编号查询订单*/
func GetOrderByNum(db *pg.DB,orderNum string)(*Order,error)
order:=new(Order)
err:= db.Model(order).Where("out_trade_no = ?",orderNum).Select()
if err!=nil//查询不到
return nil,err
return order,nil
/*通过ID查询订单*/
func GetOrderById(db *pg.DB,orderId string)(*Order,error)
order:=&OrderId:orderId
err:=db.Select(order)
if err!= nil
return nil, errors.Wrap(err, "query error, id: " + orderId)
return order,nil
//todo 修改
/*通过某个字段查询，修改订单字段值,这里是通过订单编号*/
func UpdateOrderByOrderNum(db *pg.DB,order *Order,f func(order2 *Order)) error
order,err:=GetOrderByNum(db,order.OutTradeNo)
if err != nil
return errors.Wrapf(err, "GetOrderByNum order by num error, id:%s ",order.OutTradeNo)
f(order)
_,err=db.Model(order).Set("body=?",order.Body).
Where("out_trade_no=?",order.OutTradeNo).Update()
if err != nil
return errors.Wrap(err, "UpdateOrderByOrderNum order by num error, id: " + order.Id)
return nil
/*通过ID修改订单字段值*/
func UpdateOrderById(db *pg.DB,updateOrder *Order,f func(order *Order)) error
order,err:=GetOrderById(db,updateOrder.Id)
if err!= nil
return errors.Wrap(err, "GetOrderById order by id error, id: " + updateOrder.Id)
f(order)
err = db.Update(order)
if err!= nil
return errors.Wrap(err, "query error, id: " + updateOrder.Id)
return nil
/*通过某个字段查询，修改订单字段值,这里是通过订单编号*/
func UpdateOrderByOrderNum1(db *pg.DB, setParams map[string]string,
whereParams map[string]string,f func(order_params *Order)) error
var order = &Order
f(order)
cSetParams := CreateParms(setParams,"set")
cWhereParams := CreateParms(whereParams,"where")
_,err:=db.Model(order).Set(cSetParams).
Where(cWhereParams).Update()
if err != nil
return errors.Wrap(err, "UpdateOrderByOrderNum order by num error, id: " + order.Id)
return nil
/**构造查询条件*/
func CreateParms(a map[string]string,paramType string) string
var map_len = len(a)-1
var buffer bytes.Buffer
var count = 0
for k,v:=range a
buffer.WriteString(k)
buffer.WriteString("=?")
buffer.WriteString(v)
if count < map_len
if paramType == "set"
buffer.WriteString(",")
if paramType == "where"
buffer.WriteString(" and ")
count++
return buffer.String()
//todo 创建
/*创建订单*/
func CreateWXOrder(db *pg.DB,orderModel *Order) (bool,error)
exist,err:=JudgeOrderExistByNum(db,orderModel.OutTradeNo)
if err!= nil
return false,errors.Wrapf(err, "insert wxpay error, openid: %s", orderModel.WechatOpenId)
if !exist//查询未果,创建订单
_,err := db.Model(orderModel).Insert()
if err!= nil
orderModel.Id = ""
return exist,errors.Wrapf(err, "insert wxpay error, openid: %s", orderModel.WechatOpenId)
return exist,nil
else //订单存在
return exist,nil
/*查询订单是否存在*/
func JudgeOrderExistByNum(db *pg.DB,orderNum string) (bool,error)
exist,err:=db.Model(&Order).Where("out_trade_no = ?",orderNum).Exists()
if err!= nil
return false,errors.Wrapf(err, "JudgeOrderExistByNum wxpay Exists error, orderNum: %s", orderNum)
if exist
return true ,nil
return false,nil
以上是关于golang基础-Postgresql-ORM框架github.com/go-pg/pg学习五(实战)的主要内容，如果未能解决你的问题，请参考以下文章
今晚九点|某互联网上市公司基于 Golang 的运维基础框架