воскресенье, 9 августа 2009 г.

Magick-captcha - rails plugin based on RMagick.

OK. This time I'm gonna tell you about my magick-captcha plugin.

Installations
At first you have to install RMagick package by command (example for Debian system):
aptitude install librmagick-ruby

Then install Magick-captcha plugin (run from root project directory):
ruby script/plugin install http://github.com/greyblake/magick-captcha.git


Usage
# controller

def new
@user = User.new
generate_captcha_for @user
end

def create
@user = User.new(params[:user])
validates_captcha_of(@user)
@user.save
end

# view
<%= text_field :user, :captcha %>
<%= captcha_image %>

Also you can use some options in a controller:
generate_captcha_for @user, :bg_color => "#00FF00",
:color => "#000000", :length => 8
  • bg_color - background color of captcha image
  • color - color of text
  • length - length of capcha string(characters)