Twilio Programmable Chat; Stopping client to send message

Question

Hi Twilio Evangelists,

We are using Twilio module Programmable chat and using Javascript Client and Twilio.API C# server APIs.

We want user to see the Channels and Messages for the particular channel but need to refrain them from sending messages, conditionally.

We can keep UI elements disabled, but smart user would still be able to to access the Twilio client, and send message.

There is one way to use Twilio WebHook (pre events) onSendingMessage, but that would incur an additional overhead to the server, for each message sent. Thus wouldn't be feasible solution. — Cipher sumeet

Danila Sukharev Danila Sukharev · Accepted Answer · 2017-03-01T18:41:52

It is possible.

Permission model docs: https://www.twilio.com/docs/api/chat/guides/permissions

Create a role using REST: https://www.twilio.com/docs/api/chat/rest/roles (note sendMessage permission you need to skip).

Then you have two options -- either to disallow all channel users of service to post messages by default (update DefaultChannelRoleSid for service and add a pre-webhook to assign a role with separate REST request to assign wider role to specific users) or add a pre-webhook on onMemberAdded event blocking the join by default and then adding manually via rest user to channel and assigning member a required role.

You can't do this from inside the webhook processing at the moment, so you will have to trigger some external URL that will issue the REST request.

To update the role of the member of a channel, issue POST request to the member URL providing new RoleSid parameter.

Twilio Programmable Chat; Stopping client to send message

2 Answers