goroutine,nodejs-sqlite3,nodejs-functional,Revel vs ROR

http://nasust.hatenablog.com/entry/2016/11/17/002020 for goroutine
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http://neos21.hatenablog.com/entry/2018/04/22/080000
ーーーーーーーーーーーーーーーーーーーーーーーーーーーーー
https://qiita.com/To_BB/items/aa68027a9f319bce7a33
ーーーーーーーーーーーーーーーーーーーーーーーーーーーーーーーーーーーhttps://paiza.hatenablog.com/entry/2018/03/23/paizacloud_golang_revel
cf http://railsapps.github.io/installrubyonrails-ubuntu.html　RORウブンツ
https://qiita.com/laineek/items/121a9a20d5eb26fb56f4　ROR超入門
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go/src/myapp/conf/app.conf:

[dev]
db.info = root:@/mydb?charset=utf8&parseTime=True
--------------------------------------
go/src/myapp/app/controllers/gorm.go:

package controllers

import (
    _ "github.com/go-sql-driver/mysql"
    "github.com/jinzhu/gorm"
    "github.com/revel/revel"
    "myapp/app/models"
    "log"
    )

var DB *gorm.DB

func InitDB() {
    dbInfo, _ := revel.Config.String("db.info")
    db, err := gorm.Open("mysql", dbInfo)
    if err != nil {
        log.Panicf("Failed gorm.Open: %v\n", err)
    }

    db.DB()
    db.AutoMigrate(&models.Post{})
    DB = db
}
---------------------------------------------
go/src/myapp/app/init.go:

package app

import (
  "github.com/revel/revel"
  "myapp/app/controllers"
)

...

func init() {
  ...
  revel.OnAppStart(controllers.InitDB)
}

-------------------------------------------

go/src/myapp/app/models/post.go:

package models

type Post struct {
    Id  uint64 `gorm:"primary_key" json:"id"`
    Body string `sql:"size:255" json:"body"`
}

----------------------------------------------

go/src/myapp/app/models/post.go:

package models

type Post struct {
    Id  uint64 `gorm:"primary_key" json:"id"`
    Body string `sql:"size:255" json:"body"`
}

------------------------------------------

go/src/myapp/conf/routes:

GET     /                                       Post.RedirectToPosts
GET     /posts                                  Post.Index
POST    /posts                                  Post.Create
POST    /posts/:id/delete                       Post.Delete

-----------------------------------------------

go/src/myapp/app/controllers/post.go:

package controllers

import (
    "github.com/revel/revel"
    "myapp/app/models"
    "errors"
)

type Post struct {
    *revel.Controller
}

func (c Post) Index() revel.Result {
    posts := []models.Post{}

    result := DB.Order("id desc").Find(&posts);
    err := result.Error
    if err != nil {
        return c.RenderError(errors.New("Record Not Found"))
    }
    return c.Render(posts)
}
func (c Post) Create() revel.Result {
    post := models.Post{
        Body: c.Params.Form.Get("body"),
    }
    ret := DB.Create(&post)
    if ret.Error != nil {
        return c.RenderError(errors.New("Record Create failure." + ret.Error.Error()))
    }
    return c.Redirect("/posts") 
}
func (c Post) Delete() revel.Result {
    id := c.Params.Route.Get("id")
    posts := []models.Post{}
    ret := DB.Delete(&posts, id)
    if ret.Error != nil {
        return c.RenderError(errors.New("Record Delete failure." + ret.Error.Error()))
    }
    return c.Redirect("/posts") 
}

func (c Post) RedirectToPosts() revel.Result {
    return c.Redirect("/posts") 
}

-------------------------------------------
go/myapp/app/views/Post/index.html:

{{set . "title" "Todo list"}}
{{template "header.html" .}}

<header class="jumbotron" style="background-color:#A9F16C">
  <div class="container">
    <div class="row">
      <h1>Todo list</h1>
      <p></p>
    </div>
  </div>
</header>

<div class="container">
  <div class="row">
    <div class="span6">
      {{template "flash.html" .}}
    </div>
  </div>
</div>

<div class="container">
    <form action="/posts" method="post">
        <div class="form-group">
            <div class="row">
                <label for="todo" class="col-xs-2">Todo</label>
                <input type="text" name="body" class="col-xs-8">
                <div class="col-xs-2">
                    <button type="submit" class="btn btn-success">
                        <i class="fa fa-plus"></i> Add Todo
                    </button>
                </div>         
            </div>
        </div>
    </form>

    <h2>Current Todos</h2>
    <table class="table table-striped todo-table">
        <thead>
            <th>Todos</th><th>&nbsp;</th>
        </thead>

        <tbody>
            {{ range .posts }}
                <tr>
                    <td>
                        <div>{{ .Body }}</div>
                    </td>
                    <td>
                        <form action="/posts/{{.Id}}/delete" method="post">
                            <button class="btn btn-danger">Delete</button>
                        </form>
                    </td>
                </tr>
            {{ end }}
        </tbody>
    </table>
 
</div>


{{template "footer.html" .}}