add popularity counter to blog posts as well as accessor for recent posts

app/controllers/refinery/blog/posts_controller.rb

@@ -23,6 +23,8 @@ module Refinery
         @comment = Comment.new
 
         @canonical = url_for(:locale => ::Refinery::I18n.default_frontend_locale) if canonical?
+        
+        @post.increment!(:access_count,1)
 
         respond_with (@post) do |format|
           format.html { present(@post) }

app/models/refinery/blog/post.rb

@@ -78,6 +78,14 @@ module Refinery
         def live
           where( "published_at <= ? and draft = ?", Time.now, false)
         end
+        
+        def recent(count)
+          where("published_at <= ? and draft = ?", Time.now, false).limit(count)
+        end
+        
+        def popular(count)
+          unscoped.order("access_count DESC").limit(count)
+        end
 
         def previous(item)
           where(["published_at < ? and draft = ?", item.published_at, false]).limit(1)

db/migrate/20120223022021_add_access_count_to_posts.rb

@@ -0,0 +1,8 @@
+class AddAccessCountToPosts < ActiveRecord::Migration
+  def change
+    add_column Refinery::Blog::Post.table_name, :access_count, :integer, :default => 0
+    
+    add_index Refinery::Blog::Post.table_name, :access_count
+    
+  end
+end

spec/requests/refinery/blog/posts_spec.rb

@@ -101,8 +101,42 @@ module Refinery
           comment.body.should eq(body)
         end
       end
+
+      context "post popular" do
+        let(:blog_post) { FactoryGirl.create(:blog_post) }
+        let(:blog_post2) { FactoryGirl.create(:blog_post) }
+
+        before do
+          visit refinery.blog_post_path(blog_post)
+        end
+
+        it "should increment access count" do
+          blog_post.reload.access_count.should eq(1)
+          visit refinery.blog_post_path(blog_post)
+          blog_post.reload.access_count.should eq(2)
+        end
+
+        it "should be most popular" do
+          Refinery::Blog::Post.popular(2).first.should eq(blog_post)
+        end
+      end
+
+      context "post recent" do
+        let(:blog_post) { FactoryGirl.create(:blog_post) }
+        let(:blog_post2) { FactoryGirl.create(:blog_post) }
+
+        before do
+          visit refinery.blog_post_path(blog_post2)
+          visit refinery.blog_post_path(blog_post)
+        end
+
+        it "should be the most recent" do
+          Refinery::Blog::Post.recent(2).first.should eq(blog_post2)
+        end
+      end
+
     end
-    
+
     describe "#show draft preview" do
       let(:blog_post) { FactoryGirl.create(:blog_post_draft) }
       context "when logged in as admin" do