Golang model.User類代碼示例

func WhoAmI(ctx context.Context, w http.ResponseWriter, r *http.Request) (int, error) {
	if r.Method != "GET" {
		return http.StatusMethodNotAllowed, nil
	}

	p, ok := passenger.FromContext(ctx)
	if !ok {
		return http.StatusUnauthorized, nil
	}

	var user model.User
	if err := datastore.Get(ctx, p.UserKey, &user); err != nil {
		return http.StatusInternalServerError, err
	}

	json.NewEncoder(w).Encode(user.Key(p.UserKey))
	return http.StatusOK, nil
}

func GetUser(ctx context.Context, w http.ResponseWriter, r *http.Request) (status int, err error) {
	_, ok := passenger.FromContext(ctx)
	if !ok {
		return http.StatusUnauthorized, nil
	}

	var userKey *datastore.Key
	if userKey, err = datastore.DecodeKey(mux.Vars(r)["key"]); err != nil {
		return http.StatusInternalServerError, err
	}

	var user model.User
	if err = datastore.Get(ctx, userKey, &user); err != nil {
		return http.StatusInternalServerError, err
	}

	json.NewEncoder(w).Encode(user.Key(userKey))
	return
}

func createUser(ctx context.Context, w http.ResponseWriter, r *http.Request) (status int, err error) {
	var body = struct {
		Address, Nick, Password, Company string
	}{}

	if err = json.NewDecoder(r.Body).Decode(&body); err != nil {
		return http.StatusBadRequest, err
	}

	var companyKey *datastore.Key
	if body.Company != "" {
		companyKey, err = datastore.DecodeKey(body.Company)
		if err != nil {
			return http.StatusBadRequest, err
		}
	}

	if err = util.CheckNick(body.Nick); err != nil {
		return http.StatusBadRequest, err
	}

	var address *mail.Address
	if address, err = mail.ParseAddress(body.Address); err != nil {
		return http.StatusBadRequest, err
	}

	// Duplicate length check. If we move this after the conflict checks,
	// we could end up returning with a short password after querying Datastore.
	// The other way round, we would have to hash the password, and then throw it
	// away because of possible conflicts.
	pw := []byte(body.Password)
	if err = password.CheckLen(pw); err != nil {
		return http.StatusBadRequest, err
	}

	var emailConflict bool
	if emailConflict, err = alreadyExists(ctx, "Address", address.Address); err != nil {
		return http.StatusInternalServerError, err
	}
	if emailConflict {
		return http.StatusConflict, errors.New("duplicate e-mail address")
	}

	var nickConflict bool
	if nickConflict, err = alreadyExists(ctx, "Nick", body.Nick); err != nil {
		return http.StatusInternalServerError, err
	}
	if nickConflict {
		return http.StatusConflict, errors.New("duplicate nick")
	}

	var hashedPassword []byte
	if hashedPassword, err = password.Hash(pw); err != nil {
		return http.StatusInternalServerError, err
	}

	user := model.User{
		Address:        *address,
		Nick:           body.Nick,
		HashedPassword: hashedPassword,
	}

	var key *datastore.Key
	if companyKey == nil {
		key, err = user.Save(ctx)
	} else {
		// Bind user to company for eternity.
		key, err = user.SaveWithParent(ctx, companyKey)
	}

	if err != nil {
		return http.StatusInternalServerError, err
	}

	w.WriteHeader(http.StatusCreated)
	json.NewEncoder(w).Encode(user.Key(key))
	return http.StatusOK, nil
}

// Invitation handles the creation of a new invitation and sends an e-mail to
// the user.
func Invitation(ctx context.Context, w http.ResponseWriter, r *http.Request) (status int, err error) {
	if r.Method != "POST" {
		return http.StatusMethodNotAllowed, nil
	}

	if err := initInvitationTemplate(); err != nil {
		return http.StatusInternalServerError, err
	}

	p, ok := passenger.FromContext(ctx)
	if !ok {
		return http.StatusUnauthorized, nil
	}

	var u model.User
	if err = datastore.Get(ctx, p.User, &u); err != nil {
		return http.StatusInternalServerError, nil
	}

	cKey := u.Company
	if cKey == nil {
		return http.StatusUnauthorized, nil
	}

	var company model.Company
	if err = datastore.Get(ctx, cKey, &company); err != nil {
		return http.StatusInternalServerError, err
	}

	var params = struct {
		Address, Challenge string
	}{}

	if err := json.NewDecoder(r.Body).Decode(&params); err != nil {
		return http.StatusBadRequest, err
	}

	address, err := mail.ParseAddress(params.Address)
	if err != nil {
		return http.StatusBadRequest, err
	}

	challengeKey, err := datastore.DecodeKey(params.Challenge)
	if err != nil {
		return http.StatusBadRequest, err
	}

	var challenge model.Challenge
	if err := datastore.Get(ctx, challengeKey, &challenge); err != nil {
		// TODO(flowlo): Actually look into err. If it is just something like
		// "not found", an internal server error is not appropriate.
		return http.StatusInternalServerError, err
	}

	// TODO(flowlo): Check whether the parent of the current user is the
	// parent of the challenge (if any), and check whether the challenge
	// even exists.

	var users model.Users
	keys, err := model.NewQueryForUser().
		Filter("Address=", address.Address).
		Limit(1).
		GetAll(ctx, &users)

	if err != nil {
		return http.StatusInternalServerError, err
	}

	var key *datastore.Key
	var user model.User
	if len(keys) == 1 {
		key = keys[0]
		user = users[0]
	} else {
		user = model.User{Address: *address}
		key, err = user.Put(ctx, nil)
		if err != nil {
			return http.StatusInternalServerError, err
		}
		profile := model.Profile{}
		if _, err = profile.PutWithParent(ctx, key); err != nil {
			return http.StatusInternalServerError, err
		}
	}

	// NOTE: We are creating a new, orphaned Passenger here, because a
	// Passenger can only issue tokens for the encapsulated user.
	np := passenger.Passenger{
		User: key,
	}

	now := time.Now()
	token := &model.Token{
		Creation:    now,
		Expiry:      now.Add(time.Hour * 24 * 365),
		Description: "Initialization Token",
	}

//.........這裏部分代碼省略.........