[Rails] Cleaning up has_and_belongs_to_many?

[Lon Baker]

Does has_and_belongs_to_many know to delete an object when the last 
reference to it is removed?

In my case I have Receiver <<->> Message (with a join table of course), 
but have noticed that when the last receiver removes a message from the 
association the message still exists.

Before adding code to manage this situation I want to check to see if I 
am missing something?

--
Thanks.
Lon Baker

Speedymac LLC
http://www.speedymac.com
lon at speedymac.com
AIM: spdemac