win7 在ruby1.9.2环境下安装simple_captcha

参考：https://github.com/galetahub/simple-captcha

1.安装simple_captcha插件

rails plugin install git://github.com/kares/simple_captcha.git

rails generate simple_captcha 

rake db:migrate   

 

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

 

 

 

3.在config目录下routes.rb文件中添加下面代码：

match ":controller(/:action)", :controller => /simple_captcha\/[^\/]+/

 

 

4.在app/controllers目录下,application_controller.rb文件中添加下面代码:

include SimpleCaptcha::ControllerValidation

 

 

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

 

(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") %>

 

 

 

源文章地址：https://github.com/kares/simple_captcha