I've already done this once by inserting a template into member_view and extending ControllerPublic_Member to pass my new variables to it. Works perfectly.
I'm trying to do the same thing by inserting a template into message_user_info. However, I'm having trouble figuring out how to grab the $user variable from the appropriate post to feed into my function.
I'm currently looking at extending ControllerPublic_Threads, but I'm not sure how or what to extend to get the $user of a post author and then pass two custom variables back for individual posts within a thread.
I hope that makes sense. XD Any help would be greatly appreciated.