Get open channel history

Prerequisites

Retrieving remote open channel history requires the Open channel cloud message storage service. After activation, messages are stored in the cloud for 2 months by default.

Get messages

When leaving an open channel, local messages are cleared. After rejoining, use the channel's createOpenChannelMessagesQuery() to retrieve previous messages from the server.

Method

Dart

OpenChannelMessagesQuery createOpenChannelMessagesQuery(OpenChannelMessagesQueryParams params)

OpenChannelMessagesQueryParams

Parameter	Type	Default	Description
channelId	String	Required	Open channel ID
order	TimeOrder	TimeOrder.before	Direction: before (descending) or after (ascending)
pageSize	int	20	Number of messages per page

Code example

Dart

final channel = OpenChannel('<open-channel-id>');
final query = channel.createOpenChannelMessagesQuery(
  OpenChannelMessagesQueryParams(
    channelId: '<open-channel-id>',
    order: TimeOrder.before,
    pageSize: 20,
  ),
);

await query.loadNextPage((result, error) {
  if (error == null) {
    print('Loaded ${result?.data.length} messages');
  }
});

PageData<Message>

Property	Type	Description
data	List<Message>	Messages returned in the current page.