Conventions
Well, the subject is a bit general, though I have almost only one example in mind at the time, so I'll obviously ask about that, if you have more/others feel free to add.
createList and the callbacks to count/list things.
At the moment we do that in two (main, because I think there are more) different ways:
1) have a list_something and list_[num|count]something in the controller that are in fact wrapper for a function in a subs files,
2) directly call the function in the subs file (including the file using createList or just before that).
So, what's our "favourite" approach?