Is there a way to view how many and who is subscribed to a category and/or discussion?
The discussion object stores the count of bookmarks on it.
What do you mean by category subscriptions?
Check out the Documentation! We are always looking for new content and pull requests.
Click on insightful, awesome, and funny reactions to thank community volunteers for their valuable posts.
And where do I view the discussion object?
Sorry, I find the terminology somewhat confusing between notifications and subscriptions. I meant how many people are being notified of new posts to a category.
Categories do not track the number of advanced notification preferences for that category.
You can view the discussion object by looking at the DB record. A JSON version of this discussion here would be: http://vanillaforums.org/discussion.json/29213/viewing-subscription-metrics
If you want to display the count of bookmarks in the discussions list, please check out the stats box plugin: http://vanillaforums.org/addon/statsbox-plugin