增加浏览记录与返回首页

app/controllers/blogs_controller.rb

@@ -13,6 +13,7 @@ class BlogsController < ApplicationController
 
   def show
     @post = Post.find(params[:id])
+    @post.visited
     @prev = Post.where(:created_at.lt => @post.created_at).desc(:created_at).where(:id.ne => @post.id).first
     @next = Post.where(:created_at.gt => @post.created_at).asc(:created_at).where(:id.ne => @post.id).first
     @comments = @post.comments

app/views/layouts/admin.html.slim

@@ -21,6 +21,9 @@ html
             = link_to '创建新博客', new_admin_post_path
           li
             = link_to '管理博客', admin_posts_path
+        ul.right
+          li
+            = link_to '返回首页', root_path
     - flash.each do |name, msg|
       - if msg.is_a?(String)
         div class=("alert-box #{name == :notice ? "success" : "alert"}") data-alert=""