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5.5.go
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5.5.go
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package main
import (
"fmt"
"github.com/astaxie/beego/client/orm"
"time"
_ "github.com/go-sql-driver/mysql"
)
func checkError1(err error) {
if err != nil {
panic(err)
}
}
type User struct {
Uid int `orm:"PK;auto"`
Name string `orm:"size(100)"`
Profile *Profile `orm:"rel(one)"`
Post []*Post `orm:"reverse(many)"`
}
type UserInfo struct {
Uid int `orm:"PK;auto"`
UserName string
Department string
Created time.Time
}
type Profile struct {
Id int `orm:"PK;auto"`
Age int16
User *User `orm:"reverse(one)"`
}
type Post struct {
Id int `orm:"PK;auto"`
Title string
User *User `orm:"rel(fk)"`
Tags []*Tag `orm:"rel(m2m)"`
}
type Tag struct {
Id int `orm:"PK;auto"`
Name string
Posts []*Post `orm:"reverse(many)"`
}
func init() {
err := orm.RegisterDriver("mysql", orm.DRMySQL)
checkError1(err)
err = orm.RegisterDataBase("default", "mysql", "root:micbay911@/escollect?charset=utf8")
//orm.SetMaxOpenConns("default", 30)
checkError1(err)
orm.RegisterModel(new(Profile))
orm.RegisterModel(new(Post))
orm.RegisterModel(new(UserInfo))
orm.RegisterModel(new(Tag))
orm.RegisterModel(new(User))
//orm.RunSyncdb("default", false, true)
}
func operateMysql() {
o := orm.NewOrm()
user := User{Name: "selina"}
id, err := o.Insert(&user)
fmt.Println(id, err)
user.Name = "John"
num, err := o.Update(&user)
fmt.Println(num, err)
u := User{Uid: user.Uid}
err = o.Read(&u)
fmt.Println(err)
name, err := o.Delete(&u)
checkError1(err)
fmt.Println(name)
}
func insertData() {
o := orm.NewOrm()
var user UserInfo
user.UserName = "Peter"
user.Department = "商务部"
user.Created = time.Now()
id, err := o.Insert(&user)
checkError1(err)
fmt.Println(id)
users := []UserInfo{
{UserName: "GO", Department: "CS", Created: time.Now()},
{UserName: "Python", Department: "CS", Created: time.Now()},
{UserName: "C++", Department: "CS", Created: time.Now()},
}
successNums, err := o.InsertMulti(100, users)
checkError1(err)
fmt.Println(successNums)
}
func updateData() {
o := orm.NewOrm()
user := UserInfo{Uid: 1}
if o.Read(&user) == nil {
user.UserName = "康师傅"
user.Department = "饮料"
if num, err := o.Update(&user, "UserName", "Department"); err == nil {
fmt.Println(num)
}
}
}
func queryData() {
o := orm.NewOrm()
userinfo := UserInfo{Uid: 2}
err := o.Read(&userinfo)
if err == orm.ErrNoRows {
fmt.Println("查找不到此行")
} else if err == orm.ErrMissPK {
fmt.Println("找不到主键")
} else {
fmt.Println(userinfo.Uid, userinfo.UserName)
}
var userinfo1 []*UserInfo
qs := o.QueryTable("user_info")
qs.Filter("UserName", "Peter")
qs.Filter("Department", "白酒")
num, err := qs.All(&userinfo1)
checkError1(err)
fmt.Println(num)
for u, _ := range userinfo1 {
fmt.Println(u)
}
}
func (m *UserInfo) rawQuery() {
o := orm.NewOrm()
rs := o.Raw("select * from user_info where user_name=? and department=?", "Peter", "白酒")
var users []*UserInfo
num, err := rs.QueryRows(&users)
checkError1(err)
fmt.Println(num)
for u, v := range users {
fmt.Println(u, v)
}
}
func main() {
//operateMysql()
//insertData()
//updateData()
//queryData()
var userinfo UserInfo
userinfo.rawQuery()
}