Membership object

Membership represents a single user-channel relationship in a chat.

Properties

The Membership interface has the following properties:

1interface Membership {
2    val chat: Chat
3    val channel: Channel
4    val user: User
5    val custom: Map<String, Any?>?
6    val updated: String?
7    val eTag: String?
8    val lastReadMessageTimetoken: Long?
9    ...
10}

Parameter	Description
chat Type: Chat	Reference to the main Chat object.
channel Type: Channel	Channel object.
user Type: User	User object.
custom Type: Map<String, Any?>	Any custom properties or metadata associated with the user-channel relationship in the form of a map of key-value pairs. App Context filtering language doesn’t support filtering by custom properties.
updated Type: String	Last time the Membership object was changed.
eTag Type: String	Caching value that changes whenever the Membership object changes.
lastReadMessageTimetoken Type: Long	Timetoken of the last message a user read on a given channel.

API limits

To learn about the maximum length of parameters used to set channel membership metadata, refer to REST API docs.

Methods

The Membership object exposes the following methods and properties.

• getUnreadMessagesCount()
• lastReadMessageTimetoken
• setLastReadMessage()
• setLastReadMessageTimetoken()
• streamUpdates()
• streamUpdatesOn()
• update()

Use case

Membership methods enable:

• Updating user-channel relationships and getting updates on changes
• Tracking the last message read by a user on a channel
• Getting the count of unread messages for a user