includes on controller

is it possible to have includes on controllers ?

ie. I have this block on many controller actions and I would like to
make it as DRY as possible

require 'rubygems'
require 'net/ldap'
require 'iconv'

ldap = :host => 'ldap',
      :port => 389,
      :auth => {
            :method => :anonymous

controllers are just normal objects so yes. If it was me doing this, i'd probably go the way of a wrapper class around Net::LDAP