re_captcha.rb

module Ramaze
  module Helper
    module ReCaptcha
      # Call this to generate the actual ReCaptcha script into your template.
      # Options can include
      # [rcc_pub] public recaptcha key (defaults to RCC_PUB constant)
      # [rcc_priv] privte recaptcha key (defaults to RCC_PRIV constant)
      # [ssl] generate ssl-based output, defaults to false
      #
      # This method also sets :rcc_err into the session.
      # Example (rcc_pub and rcc_private not required if RCC_PUB & RCC_PRIV constants are used):
      #       = get_captcha(:rcc_pub => 'foobar', :rcc_priv => 'blegga', :ssl => true)
      #
      def recaptcha_get(options = {})
        client = ::ReCaptcha::Client.new(
          options[:rcc_pub]  || RCC_PUB,
          options[:rcc_priv] || RCC_PRIV,
          options[:ssl]
        )
        result = client.get_challenge(session[:rcc_err] || '', options)
        session[:rcc_err] = ''
        result
      end

      # Validate recaptcha from passed in params. Sets errors into the errors
      # hash.
      #
      # [errors] errors hash-like thing.
      # [options] Options hash. currently only uses :rcc_pub and :rcc_priv
      #           options for passing in ReCaptcha keys.
      def recaptcha_validate(errors, options = {})
        client = ::ReCaptcha::Client.new(
          options[:rcc_pub]  || RCC_PUB,
          options[:rcc_priv] || RCC_PRIV
        )

        challenge = request[:recaptcha_challenge_field]
        response = request[:recaptcha_response_field]

        result = client.validate(request.ip, challenge, response, errors)
        session[:rcc_err] = client.last_error
        result
      end
    end
  end
end