What captcha system to use in Ruby on Rails3? [closed]

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I am using Ruby on Rails 3.0.7 and I would like to add captcha to my forms.

What do you advice? What is "the best" and the most widely used captcha system for Ruby on Rails applications? Where I can find some good documentation?

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Personally I'm not a fan of recaptcha, simply because I find the text so hard to read - even though it's for a good cause etc..

Have you considered doing something like asking a simple question instead (what is 4 plus 2), or another good one I've seen is a jquery slider that you have to move to prove you're human.

If you do want to stick with a captcha system, also check out Recommendations for a captcha on Ruby on Rails

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I used rack-recaptcha which is a great gem and it is very easy to use, you can find the doc at github but it is pretty simple:

Gemfile:

gem 'rack-recaptcha', :require => 'rack/recaptcha'

Application.rb:

class Application < Rails::Application
# ...
  config.gem 'rack-recaptcha', :lib => 'rack/recaptcha'
  config.middleware.use Rack::Recaptcha, :public_key => 'KEY', :private_key => 'SECRET'
end

NOTE: You can get your public and private keys in the recaptcha page

Application_helper.rb or whatever helper you want it in.

module ApplicationHelper
  include Rack::Recaptcha::Helpers
end

Application_controller.rb or whatever controller you want it in.

module ApplicationController
  include Rack::Recaptcha::Helpers
end

That is all the setup that you will need for it to work. It also has a test mode, simply add Rack::Recaptcha.test_mode! :return => false to your spec helper.

I really encourage you to check the full doc.

Hope it works for you :)

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Please visit the link https://github.com/galetahub/simple-captcha will describe more about simple-captcha

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I have used recaptcha in a RoR project and it is working fine in production without any issues. I would recommend that.

For a list of available options, look here

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Don't know much about Ruby on rails but I know ReCpatcha is most easiest and it's ran by google so you know it's good haha

found a link http://ambethia.com/recaptcha/