I wrote a convenience ActiveRecord extension to delegate methods to a base object (based on multi-table inheritance)
class ActiveRecord::Base def self.acts_as(base) class_eval %Q{ def method_missing(method, *args, &blk) #{base}.send(method, *args, &blk) rescue NoMethodError super end } end end
I have a state class and a base class
# state class class MyState < ActiveRecord::Base belongs_to :my_object acts_as :my_object end # base class class MyObject < ActiveRecord::Base has_one :head, :class_name => 'MyState' has_one :tail, :class_name => 'MyState' end
When I tried this out, I found out that it doesn't work in some cases. More specifically,
> MyState.first.some_method_in_base nil > MyObject.first.tail.some_method_in_base NoMethodError: undefined method `some_method_in_base' for #<ActiveRecord::Associations::HasOneAssociation:0xABCDEFG>
Can anyone enlighten me as to why one works and the other doesn't?