@DannyH: I've gotten a little behind with deploying updates to outreach dashboard, and the update process has been broken for 14 days. (There was a change in ores that broke the updates; I fixed it, but had forgotten to deploy to P&E dashboard after the fix.)

Updating the user count itself upon joining should be pretty easy.

The not updating at all thing is a separate bug that should be fixed as of now — I just deployed — which means it ought to show the new edits within an hour or so.

The most expedient place to intervene here would be https://github.com/WikiEducationFoundation/WikiEduDashboard/blob/master/app/controllers/self_enrollment_controller.rb#L90

Normally, the user count gets updated only as part of updating all the caches for a course, in Course#update_cache. However, for active courses, that can take a few seconds, so we don't want to do that within the request. The simplest solution might be to add a narrower method to just update the course user count (which would probably mean tweaking CourseCacheManager to expose update_user_count as a public method).

One better approach for the long term might be to take this opportunity to add an abstraction — something like a 'course enrollment manager' — that would take a course, a user, and a role, and handle the creation and destruction of CoursesUsers records as well as cache updates.

@Ragesoss Thanks for the info!

Okay, the new editor stats updated on https://outreachdashboard.wmflabs.org/courses/WMF/Test_Program_DH3/overview around twenty minutes later, which is reasonable. Is there anything else left on this ticket to fix?

The above info was based on the assumption that we wanted to have it updated the user count immediate... which ideally, it should.

I went ahead and did the change I outlined above. After the next deployment, user counts will be updated immediately when a new user joins.

Hooray, excellent.