Update User Object

Description

User property values of the logged in users can be updated with an API operation described below. This operation is useful if an application needs to provide to the users the functionality for updating user profiles and registration properties. A user must be logged in to update his registration properties.

Method

Non-Blocking API

public void Backendless.UserService.Update( BackendlessUser user, 
                                            AsyncCallback<BackendlessUser> callback );

public BackendlessUser Backendless.UserService.UpdateAsync(BackendlessUser user)

Blocking API

public BackendlessUser Backendless.UserService.Update( BackendlessUser user );

where

Argument	Description
user	The BackendlessUser object which contains property values to update the user account with.
callback	an object which receives either a return value or an error from the server. The return value from the server is an updated BackendlessUser object.

Return Value

The BackendlessUser object containing updated user data. The object has the values for all the properties stored in the Users data table.

Example

The example below updates the value of the "phoneNumber" property in the BackendlessUser object to "5551212" and sends it to the server.

Non-Blocking API

// do not forget to call Backendless.initApp in the app initialization code

AsyncCallback<BackendlessUser> updateCallback = new AsyncCallback<BackendlessUser>(
        user =>
        {
          System.Console.WriteLine( "User account has been updated" );
          Dictionary<string, object> props = user.Properties;
          foreach( KeyValuePair<string, object> pair in props )
            System.Console.WriteLine( String.Format( "Property: {0} - {1}", pair.Key, pair.Value ) );
        },
        fault =>
        {
          System.Console.WriteLine( fault.ToString() );
        } );

BackendlessUser user = // user object retrieval is out of scope of this example
user.SetProperty( "phoneNumber", "5551212" );
Backendless.UserService.Update( user, updateCallback );


// Another example that updates the user

BackendlessUser user = // user object retrieval is out of scope of this example
user.SetProperty("phoneNumber", "5551212");
await Backendless.UserService.UpdateAsync(user);

Blocking API

BackendlessUser user = // user object retrieval is out of scope of this example
user.SetProperty("phoneNumber", "5551212");
Backendless.UserService.Update(user);

Errors

The following errors may occur during the Update User Properties API call. See the Error Handling section for details on how to retrieve the error code when the server returns an error.

Error Code	Description
2002	Version is disabled or provided wrong application info (application id or secret key)
3018	The property marked as "identity" is being updated and another user already has the specified value which must be unique.
3024	General "update registration" error. Error message should contain additional details.
3028	User is not logged in.
3029	Cannot modify properties of another user. Returned when one user is logged and the call attempts to modify properties of another user.
3030	Unable to locate user account - invalid user id.
3031	A new "dynamic" property is being added, but dynamic property definition is disabled.
3045	Required properties in the provided object do not contain values.

Codeless Reference

Returns the BackendlessUser object containing updated user data. The object has the values for all the properties stored in Users data table.

Consider the following record in the Users data table:

The example below logs in as "alice@yourmail.com" to obtain the user-token. Then it updates the contents of the email and address columns in the Users data table. Note that you have to use the objectId in the operation to update the user.

The result of this operation is the new email "alice@newmail.com" and address "27 Rose Street".