really_simple_captcha

ReallySimpleCaptcha

ReallySimpleCaptcha is just another captcha gem.

Requirements

• Rails >= 3
• RMagick

Usage

PlainCaptcha

The plain captcha display an image with distorted text and a text field.

To use it, add this line in the view file within the form tag :

<%= plain_captcha_tag %>

To verify the captcha in the controller, use :

plain_captcha_valid?

ReverseCaptcha

The reverse captcha add a text field hidden with CSS to trick bot into filling this field.

To use it, add this line in the view file within the form tag :

<%= reverse_captcha_tag %>

To verify the captcha in the controller, use :

reverse_captcha_valid?

Configuration

ReverseCaptcha and PlainCaptcha must be configured separately.

PlainCaptcha

ReallySimpleCaptcha::Captcha::PlainCaptcha.configure do |config|
  config.field_name = :plain_captcha

  config.text_length = 6
  # colors
  config.fill = 'darkblue'
  config.background_color = 'white'
  # font size
  config.pointsize = 22
  # image modification options
  config.width = 120
  config.height = 40
  config.implode_amount = 0.3
  config.wave_amplitude = 4.0
  config.wave_length = 60.0
end

ReverseCaptcha

ReallySimpleCaptcha::Captcha::ReverseCaptcha.configure do |config|
  config.field_name = :reverse_captcha
end

Contributing

• Fork it
• Create your feature branch (git checkout -b my-new-feature)
• Commit your changes (git commit -am 'Add some feature')
• Push to the branch (git push origin my-new-feature)
• Create new Pull Request

License

ReallySimpleCaptcha is released under the AGPLv3. Copyright (c) 2013 La Fourmi Immo.