Martini Quick Error Check and Rendering

martini-error.go

    m.Get("/:id", func(args martini.Params, r render.Render) {
        var post Post

        err = dbmap.SelectOne(&post, "select * from posts where post_id=?", args["id"])
        
        //simple error check
        if err != nil {
       	  r.HTML(404, "error", "This post is not found.")
        } else {
          r.HTML(200, "post", post)
        }
    })

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