How do Rails ActiveRecord relationship helpers allow methods such as `user.groups.new`?

Question

In Rails, I have created a Model that retrieves users from an LDAP database rather than from ActiveRecord. Now I am attempting to integrate my ActiveRecord models with the LDAP-

Answer 1

I would go about doing this by peeking into the Rails Source Code, e.g. the code for the Group.create example above can be found in

http://api.rubyonrails.org/classes/ActiveRecord/Persistence/ClassMethods.html

  def create(attributes = nil, options = {}, &block)
    if attributes.is_a?(Array)
      attributes.collect { |attr| create(attr, options, &block) }
    else
      object = new(attributes, options, &block)
      object.save
      object
    end
  end
end