Datastoreอଘ
• ϢʔβIDͱهࣄͷURLͰ֊ʹ͍ͯ͠Δ
type Page struct {
URL string
LastMod time.Time
}
func AddEntry(c context.Context, u *User, url string) error {
p := datastore.NewKey(c, "User", u.ID, 0, nil)
key := datastore.NewKey(c, "Page", url, 0, p)
return datastore.RunInTransaction(c, func(c context.Context) error {
var page Page
err := datastore.Get(c, key, &page)
if err != nil && err != datastore.ErrNoSuchEntity {
return err
}
page.URL = url
page.LastMod = time.Now()
_, err = datastore.Put(c, key, &page)
return err
}, nil)
}