clear_caches_calculated_from_columns

# File activerecord/lib/active_record/attributes.rb, line 130
      def clear_caches_calculated_from_columns
        @attributes_builder = nil
        @column_names = nil
        @column_types = nil
        @columns = nil
        @columns_hash = nil
        @content_columns = nil
        @default_attributes = nil
        @persistable_attribute_names = nil
        @attribute_names = nil
      end