[buddypress-trac] [BuddyPress Trac] #6323: Unable to get user ID of activity items before they are deleted

[buddypress-trac]

#6323: Unable to get user ID of activity items before they are deleted
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 Reporter:  johnjamesjacoby       |      Owner:
     Type:  enhancement           |     Status:  new
 Priority:  high                  |  Milestone:  2.3
Component:  Component - Activity  |    Version:  1.1
 Severity:  normal                |   Keywords:
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 When deleting an activity stream item, it's not possible to get any
 relevant data about those items before they are deleted from the database.

 Our existing implementation does pass the activity ID's themselves around,
 and calls to `bp_activity_delete()` do have before & after actions for
 execution, but all those allow for is seeing what the query parameters are
 for the items being deleted, and they do not relay back anything about the
 actual items themselves.

 What I'm trying to do:

 * Keep a count of activity stream updates per user
 * When an activity item is deleted, check the user ID and flush the cached
 count for the activity author

 This is not currently possible because there is no way to intercept the
 deletion request, and the person deleting the activity might not be the
 same user that posted it, so the existing `$user_id` checks do not help
 (and may tangentially be broken anyways.)

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Ticket URL: <https://buddypress.trac.wordpress.org/ticket/6323>
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