# File lib/kwartz/binding/rails.rb, line 230
    def add_directive_integer_option(directive_arg, attr_name, attr_value)
      if attr_value && attr_value =~ /\A\d+\z/
        directive_arg << ', ' unless directive_arg.empty?
        directive_arg << ":#{attr_name}=>#{attr_value.to_i}"
      end
    end