Defines the name of the table column which will store the class name on single-table inheritance situations.
The default inheritance column name is type, which means it’s a reserved word inside Active Record. To be able to use single-table inheritance with another column name, or to use the column type in your own model for something else, you can set inheritance_column:
self.inheritance_column = 'zoink'
# File activerecord/lib/active_record/model_schema.rb, line 186 def inheritance_column (@inheritance_column ||= nil) || superclass.inheritance_column end