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Simple Captcha插件获取：svn://rubyforge.org/var/svn/expressica/plugins/simple_captcha
下载后把simple_captcha放入/vendor/plugins目录
Simple Captcha插件安装：
step 1.
当rails 版本>2.0
rake simple_captcha:setup
当rails 版本<2.0
rake simple_captcha:setup_old
step 2.
rake db:migrate
step 3.
在routs中添加
ActionController::Routing::Routes.draw do |map|
map.simple_captcha '/simple_captcha/:action', :controller => 'simple_captcha'
end
step 4.
在application.rb中添加
ApplicationController < ActionController::Base
include SimpleCaptcha::ControllerHelpers
end
Usage
Controller Based
In the view file within the form tags add this code
[list=1]<%= show_simple_captcha %> <%= show_simple_captcha %>[/pre]and in the controller’s action authenticate it as
[list=1]def my_action if simple_captcha_valid? do_this else do_that end end def my_action if simple_captcha_valid? do_this else do_that endend[/pre]Model Based
In the view file within the form tags write this code
[list=1]<%= show_simple_captcha(:object=>"user") %> <%= show_simple_captcha(:object=>"user") %>[/pre]and in the model class add this code
[list=1]class User < ActiveRecord::Basse apply_simple_captcha end class User < ActiveRecord::Basse apply_simple_captchaend[/pre]Validating with captcha
[list=1]@user.valid_with_captcha? @user.valid_with_captcha?[/pre]NOTE: @user.valid? will still work as it should, it will not validate the captcha code.
Saving with captcha
[list=1]@user.save_with_captcha @user.save_with_captcha[/pre]NOTE: @user.save will still work as it should, it will not validate the captcha code.
参考网址：http://expressica.com/simple_captcha/
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