tutorial_45_example_1.html

  <form action="/tutorial_45_demo_1" method="post">
    <p>
    Name: <input type="text" name="name" size="40">
    </p>
    <script type="text/javascript"
       src="http://www.google.com/recaptcha/api/challenge?k=YOUR_RECAPTCHA_PUBLIC_KEY_GOES_HERE">
    </script>
    <noscript>
       <iframe src="http://www.google.com/recaptcha/api/noscript?k=YOUR_RECAPTCHA_PUBLIC_KEY_GOES_HERE"
           height="300" width="500" frameborder="0"></iframe><br>
       <textarea name="recaptcha_challenge_field" rows="3" cols="40">
       </textarea>
       <input type="hidden" name="recaptcha_response_field" value="manual_challenge">
    </noscript>

    <br>
    <input type="submit" value="Submit">
  </form>

  <hr>
  <% unless @recaptcha_response.nil? %>
  <p>Response from reCaptcha:</p>
  <pre><%= @recaptcha_response.body %></pre>
  <% end %>