fix #13 (#1042)

Author: lunny

models/user.go

@@ -821,21 +821,26 @@ func ChangeUserName(u *User, newUserName string) (err error) {
 	return os.Rename(UserPath(u.Name), UserPath(newUserName))
 }
 
+// checkDupEmail checks whether there are the same email with the user
+func checkDupEmail(e Engine, u *User) error {
+	u.Email = strings.ToLower(u.Email)
+	has, err := e.
+		Where("id!=?", u.ID).
+		And("type=?", u.Type).
+		And("email=?", u.Email).
+		Get(new(User))
+	if err != nil {
+		return err
+	} else if has {
+		return ErrEmailAlreadyUsed{u.Email}
+	}
+	return nil
+}
+
 func updateUser(e Engine, u *User) error {
 	// Organization does not need email
+	u.Email = strings.ToLower(u.Email)
 	if !u.IsOrganization() {
-		u.Email = strings.ToLower(u.Email)
-		has, err := e.
-			Where("id!=?", u.ID).
-			And("type=?", u.Type).
-			And("email=?", u.Email).
-			Get(new(User))
-		if err != nil {
-			return err
-		} else if has {
-			return ErrEmailAlreadyUsed{u.Email}
-		}
-
 		if len(u.AvatarEmail) == 0 {
 			u.AvatarEmail = u.Email
 		}
@@ -857,6 +862,16 @@ func UpdateUser(u *User) error {
 	return updateUser(x, u)
 }
 
+// UpdateUserSetting updates user's settings.
+func UpdateUserSetting(u *User) error {
+	if !u.IsOrganization() {
+		if err := checkDupEmail(x, u); err != nil {
+			return err
+		}
+	}
+	return updateUser(x, u)
+}
+
 // deleteBeans deletes all given beans, beans should contain delete conditions.
 func deleteBeans(e Engine, beans ...interface{}) (err error) {
 	for i := range beans {

routers/user/setting.go

@@ -104,7 +104,7 @@ func SettingsPost(ctx *context.Context, form auth.UpdateProfileForm) {
 	ctx.User.KeepEmailPrivate = form.KeepEmailPrivate
 	ctx.User.Website = form.Website
 	ctx.User.Location = form.Location
-	if err := models.UpdateUser(ctx.User); err != nil {
+	if err := models.UpdateUserSetting(ctx.User); err != nil {
 		if _, ok := err.(models.ErrEmailAlreadyUsed); ok {
 			ctx.Flash.Error(ctx.Tr("form.email_been_used"))
 			ctx.Redirect(setting.AppSubURL + "/user/settings")