Doesn't like abstract classes.

[fosrias]

Blows up when it tries to find the columns of an abstract class. Fix is easy by adding line:

def transform_legacy_attribute_methods(*args, &block)

  return if self.abstract_class? 

...

Also, for this to work, the abstract class getter must be defined in a model before transform_legacy_attribute_methods. E.g.

class Human < ActiveRecord::Base

def self.abstract_class?
true
end

transform_legacy_attribute_methods

end

[sshaw]

Hi, I believe my thinking behind this was that since abstract classes do not have a table there are no legacy columns to transform.

The transformation(s) are done when the class is loaded, so returning when the class is abstract would prevent a subclass' columns from being transformed.

In the case that abstract_class? was true, transformation could be placed in the the abstract class' inherited() method, though this is flimsy since it depends the order self.abstract_class and transform_legacy_attribute_methods are called.