jystewart/has_many_polymorphs — pull request #4 by bhushangahire (2012-02-21 12:11:38+00:00)
Title: undefined method `write_inheritable_hash' for ActiveRecord::Base:Class (NoMethodError)

For Rails 3.2 write_inheritable_hash is Depricated change with

class_attribute :attribute_name
self.attribute_name = value