My irbrc file

# load libraries
require 'rubygems'
require 'wirble'

# start wirble (with color)
Wirble.init
Wirble.colorize

#script_console_running = (ENV.include?('RAILS_ENV') and IRB.conf[:LOAD_MODULES].include?('console_with_helpers'))
#rails_running = (ENV.include?('RAILS_ENV') and !IRB.conf[:LOAD_MODULES].include?('console_with_helpers'))
#irb_standalone_running = (!script_console_running and !rails_running)

#puts "script_console_running=#{script_console_running}"
#puts "rails_running=#{rails_running}"
#puts "irb_standalone_running=#{irb_standalone_running}"

# Just for Rails...
if rails_env = ENV['RAILS_ENV']
  rails_root = File.basename(Dir.pwd)
  IRB.conf[:PROMPT] ||= {}
  IRB.conf[:PROMPT][:RAILS] = {
    :PROMPT_I => "#{rails_root}> ",
    :PROMPT_S => "#{rails_root}* ",
    :PROMPT_C => "#{rails_root}? ",
    :RETURN   => "=> %s\n"
  }
  IRB.conf[:PROMPT_MODE] = :RAILS

  # Called after the irb session is initialized and Rails has
  # been loaded (props: Mike Clark).
  IRB.conf[:IRB_RC] = Proc.new do
    ActiveRecord::Base.logger = Logger.new(STDOUT)
    ActiveRecord::Base.instance_eval { alias :[] :find }
  end
end