From 69bc42c4effe797689b4e1b4d2923ab30b20c9fb Mon Sep 17 00:00:00 2001
From: yafeilee <lyfi2003@gmail.com>
Date: Wed, 2 Apr 2014 15:06:43 +0800
Subject: [PATCH] =?UTF-8?q?=E5=B0=9D=E8=AF=95=E5=A2=9E=E5=8A=A0=E6=90=9C?=
 =?UTF-8?q?=E7=B4=A2=E5=BC=95=E6=93=8E=E4=BC=98=E5=8C=96=E7=9A=84=20meta?=
 =?UTF-8?q?=20=E5=AD=97=E6=AE=B5?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 app/models/post.rb                      | 11 ++++++++++-
 app/views/blogs/index.html.slim         |  3 +++
 app/views/blogs/show.html.slim          |  4 ++++
 app/views/layouts/application.html.slim |  2 ++
 4 files changed, 19 insertions(+), 1 deletion(-)

diff --git a/app/models/post.rb b/app/models/post.rb
index 7a88fbe..a3a9006 100644
--- a/app/models/post.rb
+++ b/app/models/post.rb
@@ -44,8 +44,17 @@ class Post
     self.visited_count
   end
 
+  # 显示给首页截断数据
   def sub_content
-    HTML_Truncator.truncate(content_html,30)
+    HTML_Truncator.truncate(content_html, 300, length_in_chars: true)
+  end
+
+  # 显示给 meta description
+  def meta_content
+    html = HTML_Truncator.truncate(content_html, 100, :length_in_chars => true, ellipsis: '')
+    # 加上 div 以方便 Nokogiri 获取 text()
+    html = '<div>' + html + '</div>'
+    Nokogiri.parse(html).text()
   end
 
   def labels_content( need_blank=false )
diff --git a/app/views/blogs/index.html.slim b/app/views/blogs/index.html.slim
index f5f0d72..71c1a77 100644
--- a/app/views/blogs/index.html.slim
+++ b/app/views/blogs/index.html.slim
@@ -1,3 +1,6 @@
+- if ENV['INTRODUCE'].present? 
+  - content_for(:meta) do
+    meta name="description" content="#{ENV['INTRODUCE'].dup.force_encoding('UTF-8')}"
 - content_for(:title) do
   | 首页
 .row
diff --git a/app/views/blogs/show.html.slim b/app/views/blogs/show.html.slim
index 8769baf..5174221 100644
--- a/app/views/blogs/show.html.slim
+++ b/app/views/blogs/show.html.slim
@@ -1,3 +1,7 @@
+- content_for(:meta) do
+  meta name="description" content="#{@post.meta_content}"
+  meta name="keywords" content=@post.labels_content
+
 - content_for(:title) do
   | #{@post.title}
 .row
diff --git a/app/views/layouts/application.html.slim b/app/views/layouts/application.html.slim
index 31ade89..4b5a466 100644
--- a/app/views/layouts/application.html.slim
+++ b/app/views/layouts/application.html.slim
@@ -2,6 +2,8 @@ html
   head
     meta charset="utf-8" 
     meta name="viewport" content="width=device-width, initial-scale=1.0"
+    - if content_for?(:meta)
+      = yield(:meta)
     title
       = content_for?(:title) ? yield(:title) + " | #{ENV['SITE_NAME']}" : ENV['SITE_NAME']
     = stylesheet_link_tag    "application"