Active Record acts_as_tree and leaf depth

Using acts_as_tree, is it possible to get information of the depth a tree leaf in relation to the root? Or is available to derive information to save in the way "position" can be derived and saved for acts_as_list.

Hi Tony,

Thanks for the response. I will look in nested_set.

Can a table using acts_as_tree be used in combination with single table inheritance as described in the book Agile Web Development with Rails, pg. 263?