not sure if that's helps you but generally mentions work within the following steps:
- An '@' is typed in a mention-integrated text area
- Fire a request from the REST back end at "/now/v1/form/mention" (not a public api).
- As more characters are typed after the '@' step 2 is called with more data
- The REST service checks the permissions of the first 5 active users
- The REST service returns these first 5 users
- The mention popup displays the list of the first 5 users
- The user chooses one of these users
- An "at mention" readable code is added to the message
- The message is posted
- The message is parsed for the at mentioned text
- A live_message record is created
- A live_mention record is created
- The "Broadcast Chat APNS" (f110e602d710020023c84f80de610360) BR on insert for live_mention is fired
- new GlideLiveMessagePushNotifier().broadcastMentionFromRecord(current) with the new insert is called
- the at mention user is looked up
- the at mention user permissions are check
- a broadcast message is sent
- The Event manager queues the at mention
- An entry is made in the sysevent table
- low-level event batching happens
- "Activity Stream @Mention Email" or " Live Message Mention" email is sent
also notice that data is stored in
- live_notification
- live_message
- live_mention > here you can see that system stores the @ [sys_id:user_name] message at the user selection time
mentions were design to work on notifications but also for chat
