I'm trying to make a friendships table that looks like this:
create_table "friendships", :force => true do |t|
t.column "sent_by_user_id", :integer
t.column "received_by_user_id", :integer
t.column "status", :boolean
Where there is 1 record for each friendship, and User.friends returns
all friendships through :sent_by user and :received_by user.
Creating a User.friends model method is no trouble, but I'd like to
make a :friends association to preserve the association magic.
Is there a way to write an association that will return both sets
sent_by and received_by?