# 13.5 Add, delete and update blogs
Introduced in front beego framework to achieve the overall concept and the partial implementation of the pseudo- code, which subsections describe through beego build a blog system, including blog browse, add, modify, or delete operation.
## Blog directory
Blog directories are as follows:
/main.go
/views:
/view.tpl
/new.tpl
/layout.tpl
/index.tpl
/edit.tpl
/models/model.go
/controllers:
/index.go
/view.go
/new.go
/delete.go
/edit.go
## Blog routing
Blog main routing rules are as follows:
//Show blog Home
beego.RegisterController("/", &controllers.IndexController{})
//View blog details
beego.RegisterController("/view/: id([0-9]+)", &controllers.ViewController{})
//Create blog Bowen
beego.RegisterController("/new", &controllers.NewController{})
//Delete Bowen
beego.RegisterController("/delete/: id([0-9]+)", &controllers.DeleteController{})
//Edit Bowen
beego.RegisterController("/edit/: id([0-9]+)", &controllers.EditController{})
## Database structure
The easiest database design blog information
CREATE TABLE entries (
id INT AUTO_INCREMENT,
title TEXT,
content TEXT,
created DATETIME,
primary key (id)
);
## Controller
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() {
inputs := this.Input()
id, _ := strconv.Atoi(this.Ctx.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() {
inputs := this.Input()
id, _ := strconv.Atoi(this.Ctx.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.Params[":id"])
this.Data["Post"] = models.DelBlog(id)
this.Ctx.Redirect(302, "/")
}
## Model layer
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 layer
layout.tpl
My Blog
{{.LayoutContent}}
index.tpl
Blog posts
view.tpl
{{.Post.Title}}
{{.Post.Created}}
{{.Post.Content}}
new.tpl
New Blog Post
edit.tpl
Edit {{.Post.Title}}
New Blog Post
## Links
- [Directory](preface.md)
- Previous section: [Logs and configurations](13.4.md)
- Next section: [Summary](13.6.md)