recaptcha_helper.rb

# recaptcha gem fail when load as ajax, do this in right way
module RecaptchaHelper
  def ajax_recaptcha_script_url(options = {})
    uri = options[:ssl] ? Recaptcha::RECAPTCHA_API_SECURE_SERVER : Recaptcha::RECAPTCHA_API_SERVER
    "#{uri}/js/recaptcha_ajax.js"
  end

  # Your public API can be specified in the +options+ hash or preferably
  # the environment variable +RECAPTCHA_PUBLIC_KEY+.
  def ajax_recaptcha_tags(options = {})
    # Default options
    key   = options[:public_key] ||= ENV['RECAPTCHA_PUBLIC_KEY']
    raise Recaptcha::RecaptchaError, "No public key specified." unless key

    display_options_json = (options[:display] || {}).to_json
    html  = ""
    html << %{<div id="dynamic_recaptcha"></div>}
    html << %{<script type="text/javascript">\n}
    html << %{  Recaptcha.create('#{key}', 'dynamic_recaptcha', #{display_options_json});\n}
    html << %{</script>\n}
    return html
  end
end