验证码生成插件simple_captcha

阅读更多

插件地址: https://github.com/eshopworks/simple_captcha

(1)入门篇:
安装插件-->

script/plugin install git://github.com/eshopworks/simple_captcha.git

执行-->

rake simple_captcha:setup

在routes.rb中添加-->

map.simple_captcha '/simple_captcha/:action', :controller => 'simple_captcha'

你还需要在application_controller.rb中加入-->

ApplicationController < ActionController::Base
  include SimpleCaptcha::ControllerHelpers
end

根据我的项目,需要在app/views/events/new.html.erb的form中加上-->

 

    <%= show_simple_captcha(:object => 'event') %>
 

在app/models/event.rb中添加-->

class Event < ActiveRecord::Base
  apply_simple_captcha
end

将app/controllers/events_controller.rb中的create action-->

if @event.save

改为-->

if @event.save_with_captcha

(2)进阶篇
在插件下载的Wiki里,有一个链接,是关于此插件的详细用法的,如下-->
Simple Captcha: http://expressica.com/simple_captcha/

如需要进阶使用,可以根据里面的说明进行相关修改,如->

引用

:label
provides the custom below the image, default is “(type the code from the image)”

:image_style
Provides the specific image style for the captcha image.
There are eight different styles available with the plugin as…

    * simply_blue
    * simply_red
    * simply_green
    * embosed_silver
    * all_black
    * distorted_black
    * charcoal_grey
    * almost_invisible

Default is ’simply_blye’
You can also specify ‘random’ to select the random image style.

:distortion
Handles the complexity of the image. The :distortion can be set to ‘low’, ‘medium’
or ‘high’. Default is ‘low’.

:code_type
Handles the text of the captcha image. Available options are ‘numeric’ or ‘alphabetic’.
Default is ‘alphabetic’.

:object
the name of the object of the model class, to implement the model based captcha.

看看我的应用-->
在user.rb中

apply_simple_captcha :message => "image and text were different", :add_to_base => true

在对应的new.html.erb里

验证码
<%= show_simple_captcha(:object => 'user', :code_type => 'numeric', :image_style => 'all_black', :distortion => 'low',:label => "(请正确输入图片中的数字?)") %>

因此它看起来应该是这样的-->


(3)实操篇:
从上图可以看到,这种样式其实是很丑的.而且也没有刷新验证码的按钮.反正就是不顺眼.废话不说了,看看netfork兄的文章吧.
验证码生成换成simple_captcha了: http://netfork.iteye.com/blog/434099

以上东东只供记录.