ReCAPTCHA

This plugin adds helpers for the ReCAPTCHA API (http://recaptcha.net/). In your views you can use the recaptcha_tags method to embed the needed javascript, and you can validate in your controllers with verify_recaptcha.

You’ll want to add your public and private API keys in the environment variables RECAPTCHA_PUBLIC_KEY and RECAPTCHA_PRIVATE_KEY, respectively. You could also specify them in config/environment.rb if you are so inclined. Exceptions will be raised if you call these methods and the keys can’t be found.

recaptcha_tags

Some of the options available:

verify_recaptcha

This method returns true or false after processing the parameters from the ReCAPTCHA widget. Why isn’t this a model validation? Because that violates MVC. Use can use it like this, or how ever you like. Passing in the ActiveRecord object is optional, if you do—and the captcha fails to verify—an error will be added to the object for you to use.

  respond_to do |format|
    if verify_recaptcha(@post) && @post.save
      # ...
    else
      # ...
    end
  end

TODO

• Remove Rails/ActionController dependencies
• Framework agnostic
• Add some helpers to use in before_filter and what not
• Better documentation