Martini and Binding utility for reading form params and validation

martini-binding.go

//needs import ("github.com/codegangsta/martini-contrib/binding")

type Post struct {
    Id      int64 `db:"post_id"`
    Created int64
    Title   string `form:"Title"`
    Body    string `form:"Body" binding:"required"`
}

func (bp Post) Validate(errors *binding.Errors, req *http.Request) {
    
    if len(bp.Title) == 0 {
        errors.Fields["title"] = "Title cannot be empty"
    }
}

    //make a post
    m.Post("/", binding.Bind(Post{}), func(post Post, r render.Render) {

        p1 := newPost(post.Title, post.Body)
        
        err = dbmap.Insert(&p1)
        checkErr(err, "Insert failed")
        
        newmap := map[string]interface{}{"metatitle": "created post", "post": p1}
        r.HTML(200, "post", newmap)
    })
    
func checkErr(err error, msg string) {
    if err != nil {
        log.Fatalln(msg, err)
    }
}

Learn more about this code here: http://techslides.com/simple-app-with-go-martini-gorp-and-mysql/