helpers.rb

require 'erb'
require 'ostruct'

module FuckingHelpers
  def last
    "from helper"
  end
end

vars = OpenStruct.new :first => 'Mislav'

class << vars
  include FuckingHelpers
end

template = 'Name: <%= first %> <%= last %>'
puts ERB.new(template).result(vars.send(:binding))