title: Change ActiveRecord::Base.inheritance_column in a rails app
body: <p>I want to use Single Table Inheritance using a column other than <code>type</code>.  According to the Rails documentation - <a href="http://api.rubyonrails.org/classes/ActiveRecord/Base.html" rel="noreferrer">http://api.rubyonrails.org/classes/ActiveRecord/Base.html</a>, I can do this by modifying <code>ActiveRecord::Base.inheritance_column</code>. How can I do this?</p>