RAILS_DIRNAME = File.basename(Dir.pwd)
IRB.conf[:PROMPT] ||= {}
IRB.conf[:PROMPT][:RAILS] = {
  :PROMPT_I => "#{RAILS_DIRNAME}> ",
  :PROMPT_N => "#{RAILS_DIRNAME}> ",
  :PROMPT_S => "#{RAILS_DIRNAME}* ",
  :PROMPT_C => "#{RAILS_DIRNAME}? ",
  :RETURN   => "=> %s\n" 
}
IRB.conf[:PROMPT_MODE] = :RAILS
 
def change_log(stream)
  ActiveRecord::Base.logger = Logger.new(stream)
  ActiveRecord::Base.clear_active_connections!
end
 
def show_log
  change_log(STDOUT)
end
 
def hide_log
  change_log(nil)
end
 
def sql(query)
  ActiveRecord::Base.connection.select_all(query)
end