win7 在ruby1.9.2环境下安装simple_captcha
1.安装simple_captcha插件
rails plugin install git://github.com/kares/simple_captcha.gitrails generate simple_captcha rake db:migrate
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2.配置，在config/initializers目录下添加simple_captcha.rb
SimpleCaptcha.backend = :rmagick # default is :RMagick，如果安装的是rmagick插件，就写":rmagick"；或选用":quick_magick"?SimpleCaptcha.image_options = { :image_color => 'white', :image_size => '110x30', :text_color => 'black', :text_font => 'arial', :text_size => 22} # these are the defaults 设置验证码插件的风格和样式?
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3.在config目录下routes.rb文件中添加下面代码：
match ":controller(/:action)", :controller => /simple_captcha\/[^\/]+/
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4.在app/controllers目录下,application_controller.rb文件中添加下面代码:
include SimpleCaptcha::ControllerValidation
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5.应用
(1)简单的引用
界面上：<%= show_simple_captcha %>
controller层：
if simple_captcha_valid? flash[:notice]="success"else flash[:notice]="error"end
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(2)与某个model相关引用
model层添加：
class User < ActiveRecord::Base include SimpleCaptcha::ModelValidation validates_captcha : o n => :create, :message => 'invalid captcha'end
?界面上代码: <%= show_simple_captcha(:object=>"user") %>
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源文章地址：https://github.com/kares/simple_captcha
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