91 lines
1.7 KiB
Markdown
91 lines
1.7 KiB
Markdown
## beego orm 介绍
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## 快速入门
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```go
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package main
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import (
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"fmt"
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"github.com/astaxie/beego/orm"
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_ "github.com/go-sql-driver/mysql"
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)
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// 最简单的两个表的定义
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type User struct {
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Id int `orm:"auto"`
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Name string `orm:"size(100)"`
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orm.Manager
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}
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type Post struct {
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Id int `orm:"auto"`
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User *User `orm:"rel(fk)"`
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Title string `orm:"size(100)"`
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Content string
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orm.Manager
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}
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func init() {
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// 将表定义注册到 orm 里
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orm.RegisterModel(new(User))
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orm.RegisterModel(new(Post))
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// 链接参数设置
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orm.RegisterDataBase("default", "mysql", "root:root@/my_db?charset=utf8", 30)
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}
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func main() {
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orm.BootStrap() // 确保在所有 RegisterModel 之后执行
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o := orm.NewOrm()
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var user User
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obj := o.Object(&user)
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// 创建
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user.Name = "slene"
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id, err := obj.Insert()
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fmt.Println(id, err)
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// 更新
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user.Name = "astaxie"
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num, err := obj.Update()
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fmt.Println(num, err)
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// 查询单个
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var u User
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err = o.QueryTable("user").Filter("id", &user).One(&u)
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fmt.Println(u.Id, u.Name, err)
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// 创建 post
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var post Post
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post.Title = "beego orm"
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post.Content = "powerful amazing"
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post.User = &u
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id, err = o.Object(&post).Insert()
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fmt.Println(id, err)
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// 当然，以 map[string]interface{} 形式的数据返回也是允许的
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var maps []orm.Params
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num, err = o.QueryTable("user").Filter("id", &u).Values(&maps)
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fmt.Println(num, err, maps[0])
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// 删除
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num, err = obj.Delete() // 默认，级联删除 user 以及关系存在的 post
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fmt.Println(num, err)
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}
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```
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## 详细文档
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1. [Model Definition](Models.md)
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2. Custom Fields
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3. [Orm](Orm.md)
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4. [Object](Object.md)
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5. [Query](Query.md)
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6. Condition
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7. Raw
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8. Transaction
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9. Faq
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