I don't see any way to handle callbacks for changes to the ancestry tree, for example if I need to do something when a a node's parent is changed, or a new child is added.
I could hack around it using dirty attributes, but it doesn't seem like that works either.
parent.child_created! unless parent.nil?
Would you recommend this as the most effect way of "touching" the root of the child to set the updated_at column?
yeah, why not?
should work great