react_tutorial_server.go

package main

import (
	"encoding/json"
	"log"
	"net/http"
)

type Comment struct {
	Author string `json:"author"`
	Text   string `json:"text"`
}

var (
	comments = []Comment{
		Comment{Author: "Pete Hunt", Text: "This is one comment"},
		Comment{Author: "Jordan Walke", Text: "This is *another* comment"},
	}
)

func main() {
	http.Handle("/", http.FileServer(http.Dir("root")))
	http.HandleFunc("/comments", handleComments)
	log.Fatal(http.ListenAndServe(":8080", nil))
}

func handleComments(w http.ResponseWriter, r *http.Request) {
	if r.Method == "POST" {
		author := r.PostFormValue("author")
		text := r.PostFormValue("text")
		comments = append(comments, Comment{Author: author, Text: text})
	}
	json, err := json.Marshal(comments)
	if err != nil {
		log.Fatal(err)
	}
	w.Write(json)
}