1. 删除了 Shares 表，分享不存数据库里面，改为直接取Google Reader的20条，以集合的方式存 Cache 里面；

2. 当然，就加入了 google_reader_id 到 Settings 表里面；
3. 去除了之前所有 Shares 表由 scaffold 生成的文件；
4. 后面设置里面加入 google_reader_id 的项；
5. HomeController 加入 share，用于分享页面，并且share功能目前已完成；
6. lib/string 里面加入 remove_html_tag 的方法，用于清除所有HTML标签；
7. lib/string 里面加和 html_decode 方法，用于反解 html_encode 格式化的内容；

app/controllers/home_controller.rb

@@ -27,4 +27,11 @@ def show
     set_nav_actived(@page.slug)
     render :file => "pages/show", :layout => "application"
   end
+
+  def share
+    set_nav_actived("share")
+    set_seo_meta("Google Reader 分享")
+    @api_url = Share.api_url(@setting)
+    @shares = Share.find_all(@setting)
+  end
 end

app/helpers/application_helper.rb

@@ -13,4 +13,6 @@ def success_messages
       ''
     end
   end
+
+
 end

app/models/setting.rb

@@ -9,6 +9,7 @@ def self.find_create
           :email => "huacnlee@gmail.com",
           :meta_description => "我是一个Web开发人员,.NET,Python,Ruby,PHP,Javascrip等都有在用,我是做互联网开发的,这是一个用于介绍我自已的网站.",
           :fanfou_id => "huacn",
+          :google_reader_id => "08982619185204047523",
           :home_show => '
   <div class="info">
     <div class="face">

app/models/share.rb

@@ -1,2 +1,34 @@
+require "rubygems"
+require 'simple-rss'
+require 'open-uri'
+require "lib/string"
+
 class Share < ActiveRecord::Base
+
+  def self.api_url(setting)     
+    "http://www.google.com/reader/public/atom/user%2F#{setting.google_reader_id}%2Fstate%2Fcom.google%2Fbroadcast"
+  end
+
+  def self.find_all(setting)
+    @expire_minutes = 1.days.minutes
+    cache_key = "data/shares"
+    feeds = Rails.cache.read(cache_key)
+    if not feeds
+       feeds = []
+        feed = SimpleRSS::parse open(api_url(setting))
+        if feed != nil
+          feed.items.each do |item|
+            feeds << {  
+              "title" => item.title,
+              "link" => item.link,
+              "content" => item.content == nil ? item.summary.html_decode.remove_html_tag()[0..500] + '...' : item.content.html_decode.remove_html_tag()[0..500] + '...',
+              "updated_at" => item.updated,
+              "author" => item.author,
+            }
+          end
+        end
+        Rails.cache.write(cache_key,feeds,:expires_in => @expire_minutes)
+    end
+    feeds
+  end
 end

app/views/cpanel/settings/index.html.erb

@@ -23,6 +23,10 @@
 			<td class="field">饭否ID</td>
 			<td><%= f.text_field :fanfou_id, :class => "text middle"  %></td>
 		</tr>
+		<tr class="row">
+			<td class="field">Google Reader</td>
+			<td>http://www.google.com/reader/shared/<%= f.text_field :google_reader_id, :class => "text short" %></td>
+		</tr>
 		<tr class="row">
 			<td class="field">Meta Keywords</td>
 			<td><%= f.text_field :meta_keywords, :class => "text long"  %></td>

config/routes.rb

@@ -12,15 +12,16 @@
   end
 
   # Share
-  map.resources :controller => "shares", :as => "share"
-
+
   # Blog
   map.purchase "blog", :controller => "posts"
   map.purchase "blog", :controller => "posts", :action => "index"
   map.purchase "blog/rss", :controller => "posts", :action => "rss"
   map.purchase "blog/page/:page", :controller => "posts", :action => "index", :requirements => { :page => /[\d]+/ }
   map.purchase "blog/:slug", :controller => "posts", :action => "show", :requirements => { :slug => /[a-z0-9A-Z\-\_\.]+/ }
 
+  map.purchase "share", :controller => "home", :action => "share"
+
   # Pages (This well be stay last line)
   map.purchase ":slug", :controller => "home", :action => "show", :requirements => { :slug => /[a-z0-9A-Z\-\_\.]+/ }
 

db/schema.rb

@@ -9,7 +9,7 @@
 #
 # It's strongly recommended to check this file into your version control system.
 
-ActiveRecord::Schema.define(:version => 20090517034648) do
+ActiveRecord::Schema.define(:version => 20090517064606) do
 
   create_table "comments", :force => true do |t|
     t.integer  "post_id",    :null => false
@@ -71,16 +71,7 @@
     t.datetime "updated_at"
     t.string   "fanfou_id"
     t.string   "blog_feed_html"
-  end
-
-  create_table "shares", :force => true do |t|
-    t.string   "title",      :null => false
-    t.string   "summary",    :null => false
-    t.string   "from"
-    t.string   "cover"
-    t.string   "url",        :null => false
-    t.datetime "created_at"
-    t.datetime "updated_at"
+    t.string   "google_reader_id"
   end
 
   create_table "tags", :force => true do |t|

lib/string.rb

@@ -28,6 +28,15 @@ def truncate_html(len = 30, ellipsis = "...")
     (results + ellipsis)
   end
 
+  def remove_html_tag()
+    self.gsub(/<.+?>/, "")
+  end
+
+  def html_decode
+    es = {'&amp;' => '&', '&gt;' => '>', '&lt;' => '<', '&quot;' => '"'}
+    self.gsub(/&amp;|&gt;|&lt;|&quot;/) { |s| es[s] }
+  end
+
   # clear unsafe char with url slug
   def safe_slug(spliter = '-')
     @slug = self