Thanks to the wonderful advice of everybody here, I finally understand
how to add records to a HABTM table. You treat it like an array, and
just use the “<<” concatenator to stick the new record on at the end.
But how do you delete a record?
i’ve tried to use arr.delete or arr.clear, like in the pickaxe book, but
it’s not working. Can anyone give a quick rundown on the basics of
deleting these kinds of associations?