Threads show anyone who has viewed the thread as participants

[ankush]

IMO it should be just those who've replied on the thread.

E.g:

[linear]

RAV-124 Threads show anyone who has viewed the thread as particpants.

[nikkothari22]

It actually shows anyone who joined the thread by clicking on the join button. My guess is people joined the thread because they were not able to view files/images shared on the thread without joining

[ankush]

That's plausible, no images in that particular thread though.

How about auto-join on first reply instead of explicitly joining ?

[janhvipatil]

All channel members should have read access to the thread (need not be participants and need not be notified of the thread activity - other than seeing the number of replies and seeing all the thread messages upon opening the thread)
They become active participants when they reply in the thread.
But what if the user wants to be notified of the thread messages without replying in the thread (i.e wants to be a participant)? They probably should have an option to join in the conversation?

[ankush]

Yeah makes sense.

[nikkothari22]

The problem is that we're showing channel members (threads are also channels) in the card - and someone who hasn't replied but has notifications turned on for the thread would also show up. We could fetch all the "participants" by grouping all messages by owner in the thread and show that. There's a performance penalty though since channel members are cached in the system - so it's faster as opposed to running a SQL query for participants.