前面介绍了beego框架实现的整体构思以及部分实现的伪代码，这小节介绍通过beego建立一个博客系统，包括博客浏览、添加、修改、删除等操作。

博客目录

博客目录如下所示：

.
├── controllers
│   ├── delete.go
│   ├── edit.go
│   ├── index.go
│   ├── new.go
│   └── view.go
├── main.go
├── models
│   └── model.go
└── views
    ├── edit.tpl
    ├── index.tpl
    ├── layout.tpl
    ├── new.tpl
    └── view.tpl

博客路由

博客主要的路由规则如下所示：

//显示博客首页
beego.Router("/", &controllers.IndexController{})
//查看博客详细信息
beego.Router("/view/:id([0-9]+)", &controllers.ViewController{})
//新建博客博文
beego.Router("/new", &controllers.NewController{})
//删除博文
beego.Router("/delete/:id([0-9]+)", &controllers.DeleteController{})
//编辑博文
beego.Router("/edit/:id([0-9]+)", &controllers.EditController{})

数据库结构

数据库设计最简单的博客信息

CREATE TABLE entries (
    id INT AUTO_INCREMENT,
    title TEXT,
    content TEXT,
    created DATETIME,
    primary key (id)
);

控制器

IndexController:

type IndexController struct {
    beego.Controller
}
func (this *IndexController) Get() {
    this.Data["blogs"] = models.GetAll()
    this.Layout = "layout.tpl"
    this.TplNames = "index.tpl"
}

ViewController:

type ViewController struct {
    beego.Controller
}
func (this *ViewController) Get() {
    id, _ := strconv.Atoi(this.Ctx.Input.Params(":id"))
    this.Data["Post"] = models.GetBlog(id)
    this.Layout = "layout.tpl"
    this.TplNames = "view.tpl"
}

NewController

type NewController struct {
    beego.Controller
}
func (this *NewController) Get() {
    this.Layout = "layout.tpl"
    this.TplNames = "new.tpl"
}
func (this *NewController) Post() {
    inputs := this.Input()
    var blog models.Blog
    blog.Title = inputs.Get("title")
    blog.Content = inputs.Get("content")
    blog.Created = time.Now()
    models.SaveBlog(blog)
    this.Ctx.Redirect(302, "/")
}       

EditController

type EditController struct {
    beego.Controller
}
func (this *EditController) Get() {
    id, _ := strconv.Atoi(this.Ctx.Input.Params[":id"])
    this.Data["Post"] = models.GetBlog(id)
    this.Layout = "layout.tpl"
    this.TplNames = "new.tpl"
}
func (this *EditController) Post() {
    inputs := this.Input()
    var blog models.Blog
    blog.Id, _ = strconv.Atoi(inputs.Get("id"))
    blog.Title = inputs.Get("title")
    blog.Content = inputs.Get("content")
    blog.Created = time.Now()
    models.SaveBlog(blog)
    this.Ctx.Redirect(302, "/")
}

DeleteController

type DeleteController struct {
    beego.Controller
}
func (this *DeleteController) Get() {
    id, _ := strconv.Atoi(this.Ctx.Input.Params(":id"))
    blog := GetBlog(id int)
    this.Data["Post"] = blog
    models.DelBlog(blog)
    this.Ctx.Redirect(302, "/")
}   

model层

package models
import (
    "database/sql"
    "github.com/astaxie/beedb"
    _ "github.com/ziutek/mymysql/godrv"
    "time"
)
type Blog struct {
    Id      int `PK`
    Title   string
    Content string
    Created time.Time
}
func GetLink() beedb.Model {
    db, err := sql.Open("mymysql", "blog/astaxie/123456")
    if err != nil {
        panic(err)
    }
    orm := beedb.New(db)
    return orm
}
func GetAll() (blogs []Blog) {
    db := GetLink()
    db.FindAll(&blogs)
    return
}
func GetBlog(id int) (blog Blog) {
    db := GetLink()
    db.Where("id=?", id).Find(&blog)
    return
}
func SaveBlog(blog Blog) (bg Blog) {
    db := GetLink()
    db.Save(&blog)
    return bg
}
func DelBlog(blog Blog) {
    db := GetLink()
    db.Delete(&blog)
    return
}

view层

layout.tpl

    
    

    
Home
    
New Post

{{.LayoutContent}}

index.tpl

Blog posts

{{range .blogs}}
    

        {{.Title}}
        from {{.Created}}
        Edit
        Delete
    
{{end}}

view.tpl

{{.Post.Title}}
{{.Post.Created}}

{{.Post.Content}}               

new.tpl

New Blog Post
标题:

内容：

edit.tpl

Edit {{.Post.Title}}
New Blog Post

标题:

内容：{{.Post.Content}}