country_select fix for Rails 3.2

country_select_helper.rb

class CountrySelect < InstanceTag
  include ::CountrySelect::TagHelper

  def render(options, html_options)
    @options = options
    @html_options = html_options

    if self.respond_to?(:select_content_tag)
      select_content_tag(country_option_tags, @options, @html_options)
    else
      html_options = @html_options.stringify_keys
      add_default_name_and_id(html_options)
      options[:include_blank] ||= true unless options[:prompt] || select_not_required?(html_options)
      value = options.fetch(:selected) { value(object) }
      content_tag(:select, add_options(country_option_tags, options, value), html_options)
    end
  end

  def value(object)
    object.send @method_name if object
  end

  def select_not_required?(html_options)
    !html_options["required"] || html_options["multiple"] || html_options["size"].to_i > 1
  end

  def add_options(option_tags, options, value=nil)
    if options[:include_blank]
      option_tags = content_tag_string('option', options[:include_blank].kind_of?(String) ? options[:include_blank] : nil, :value => '') + "\n" + option_tags
    end

    if value.blank? && options[:prompt]
      option_tags = content_tag_string('option', prompt_text(options[:prompt]), :value => '') + "\n" + option_tags
    end
    option_tags
  end

  def prompt_text(text)
    text.kind_of?(String) ? text : I18n.translate('helpers.select.prompt', default: 'Please select')
  end
end