Use signup table in Signup API.

object/application.go

@@ -208,3 +208,34 @@ func (application *Application) GetEmailProvider() *Provider {
 func (application *Application) GetSmsProvider() *Provider {
 	return application.getProviderByCategory("SMS")
 }
+
+func (application *Application) getSignupItem(itemName string) *SignupItem {
+	for _, signupItem := range application.SignupItems {
+		if signupItem.Name == itemName {
+			return signupItem
+		}
+	}
+	return nil
+}
+
+func (application *Application) IsSignupItemEnabled(itemName string) bool {
+	return application.getSignupItem(itemName) != nil
+}
+
+func (application *Application) IsSignupItemVisible(itemName string) bool {
+	signupItem := application.getSignupItem(itemName)
+	if signupItem == nil {
+		return false
+	}
+
+	return signupItem.Visible
+}
+
+func (application *Application) GetSignupItemRule(itemName string) string {
+	signupItem := application.getSignupItem(itemName)
+	if signupItem == nil {
+		return ""
+	}
+
+	return signupItem.Rule
+}

object/check.go

@@ -27,34 +27,54 @@ func init() {
 	reWhiteSpace, _ = regexp.Compile("\\s")
 }
 
-func CheckUserSignup(organizationName string, username string, password string, displayName string, email string, phone string, affiliation string) string {
-	organization := getOrganization("admin", organizationName)
-
-	if len(username) <= 2 {
-		return "username must have at least 3 characters"
-	} else if len(password) <= 5 {
-		return "password must have at least 6 characters"
-	} else if organization == nil {
+func CheckUserSignup(application *Application, organization *Organization, username string, password string, displayName string, email string, phone string, affiliation string) string {
+	if organization == nil {
 		return "organization does not exist"
-	} else if reWhiteSpace.MatchString(username) {
-		return "username cannot contain white spaces"
-	} else if HasUserByField(organizationName, "name", username) {
-		return "username already exists"
-	} else if HasUserByField(organizationName, "email", email) {
-		return "email already exists"
-	} else if HasUserByField(organizationName, "phone", phone) {
-		return "phone already exists"
-	} else if displayName == "" {
-		return "displayName cannot be blank"
-	} else if affiliation == "" {
-		return "affiliation cannot be blank"
-	} else if !util.IsEmailValid(email) {
-		return "email is invalid"
-	} else if organization.PhonePrefix == "86" && !util.IsPhoneCnValid(phone) {
-		return "phone number is invalid"
-	} else {
-		return ""
 	}
+
+	if application.IsSignupItemVisible("Username") {
+		if len(username) <= 1 {
+			return "username must have at least 2 characters"
+		} else if reWhiteSpace.MatchString(username) {
+			return "username cannot contain white spaces"
+		} else if HasUserByField(organization.Name, "name", username) {
+			return "username already exists"
+		}
+	}
+
+	if len(password) <= 5 {
+		return "password must have at least 6 characters"
+	}
+
+	if application.IsSignupItemVisible("Email") {
+		if HasUserByField(organization.Name, "email", email) {
+			return "email already exists"
+		} else if !util.IsEmailValid(email) {
+			return "email is invalid"
+		}
+	}
+
+	if application.IsSignupItemVisible("Phone") {
+		if HasUserByField(organization.Name, "phone", phone) {
+			return "phone already exists"
+		} else if organization.PhonePrefix == "86" && !util.IsPhoneCnValid(phone) {
+			return "phone number is invalid"
+		}
+	}
+
+	if application.IsSignupItemVisible("Display name") {
+		if displayName == "" {
+			return "displayName cannot be blank"
+		}
+	}
+
+	if application.IsSignupItemVisible("Affiliation") {
+		if affiliation == "" {
+			return "affiliation cannot be blank"
+		}
+	}
+
+	return ""
 }
 
 func CheckPassword(user *User, password string) string {

object/user.go

@@ -114,6 +114,20 @@ func GetMaskedUsers(users []*User) []*User {
 	return users
 }
 
+func GetLastUser(owner string) *User {
+	user := User{Owner: owner}
+	existed, err := adapter.Engine.Desc("created_time", "id").Get(&user)
+	if err != nil {
+		panic(err)
+	}
+
+	if existed {
+		return &user
+	} else {
+		return nil
+	}
+}
+
 func UpdateUser(id string, user *User) bool {
 	owner, name := util.GetOwnerAndNameFromId(id)
 	if getUser(owner, name) == nil {