put_typed_name_to_datastore.go

package handler

import (
	"net/http"
	"fmt"
	"vendor/google.golang.org/appengine"
	"vendor/google.golang.org/appengine/log"
	"strconv"
	"vendor/google.golang.org/appengine/datastore"
)

func Hello(w http.ResponseWriter, r *http.Request) {
    fmt.Fprint(w, "Hello, world!")
}

func DatastorePut(w http.ResponseWriter, r *http.Request) {
	u := &User{
		Name: "pospome",
	}

	c := appengine.NewContext(r)
	k := datastore.NewIncompleteKey(c, "User", nil)
	if _, err := datastore.Put(c, k, u); err != nil {
		log.Debugf(c, "err = %v", err)
		fmt.Fprint(w, fmt.Sprintf("err = %v, ", err))
	}

	fmt.Fprint(w, u.Name.Echo() + ", ")
	fmt.Fprint(w, "datastore put")
}

type Name string

func (n Name) Echo() string {
	return "name is " + string(n)
}

type User struct {
	Name    Name
}


func DatastoreGet(w http.ResponseWriter, r *http.Request) {
	idStr := r.URL.Query().Get("id")
	id, err := strconv.ParseInt(idStr, 10, 64)
	if err != nil {
		fmt.Fprintf(w, "err = %v, ", err)
		return
	}

	c := appengine.NewContext(r)
	k := datastore.NewKey(c, "User", "", id, nil)

	u := &User{}

	if err := datastore.Get(c, k, u); err != nil {
		log.Debugf(c, "err = %v", err)
		fmt.Fprintf(w, "err = %v, ", err)
	}

	fmt.Fprintf(w, "echo = %s, ", u.Name.Echo())

	fmt.Fprintf(w, "u = %v", u)
}