RE: [Rails] New to Ruby on Rails.. Database Relations?

I've been devloping in Coldfusion for the last 3-4 years..
I'm looking into Ruby on Rails and was wonding how I can join
tables in my database.

Look at the :includes option for the finder methods of
ActiveRecord::Base.

Alternately, you can always invoke manual SQL queries with find_by_sql.

Also, if I delete a Ex. Post, how can I make sure it deletes
the comments...?

See :dependent=>:destroy in ActiveRecord::Base to do it in rails; you
could also tell your database to do it on_delete if your database
permits.

- donald