My question is when ActiveRecord associations are actually made? To me, it doesn't seem like the relationship is made until of the objects is saved into the database. Let's say i have models like:
Library has_many :books Book belongs_to :Library
If I have code such as:
book = Book.new
library = Library.new library.books << book
it seems like library.books is empty UNTIL book is first saved.
this causes strange problems for me if I am trying to validate that a book always belongs to a library, and a library has to have a least one book.
Maybe I'm thinking about this the wrong way?
Thanks in advance, Chris