Example of customizing hirb helper for active record

my_active_record_table.rb

# Customize description to include model class
class Hirb::Helpers::MyActiveRecordTable < Hirb::Helpers::AutoTable
  def self.render(rows, options={})
    @model_class = rows.is_a?(Array) ? rows[0].class : rows.class
    super
  end

  def self.model_class; @model_class; end

  def render_table_description
    "#{self.class.model_class}: #{super}"
  end
end

# Hirb.enable :output=>{ "ActiveRecord::Base"=>{:class=>:my_active_record_table, :ancestor=>true} }