Add RSS support

Change controller name to FeedsController
Change endpoint to "blog"
Add caching to posts and events queries
Update tests

Author: Fernando Perales & Gilberto Villa

app/controllers/atom_feeds_controller.rb

@@ -0,0 +1,19 @@
+class FeedsController < ApplicationController
+  def show
+
+    posts = Rails.cache.fetch('posts', expires_in: 12.hours) do
+      Crowdblog::Post.all_for_feed
+    end
+    
+    events = Rails.cache.fetch('events', expires_in: 12.hours) do 
+      Event.limit(15)
+    end
+    
+    @items = (posts + events).sort_by(&:updated_at).reverse
+
+    respond_to do | format |
+      format.xml { render layout: false }
+      format.rss { render layout: false }
+    end 
+  end
+end

app/controllers/feeds_controller.rb

@@ -0,0 +1,27 @@
+xml.instruct! :xml, :version => "1.0" 
+xml.rss :version => "2.0" do
+  xml.channel do
+    xml.title "rails.mx"
+
+    @items.each do | item |
+      if item.class == Crowdblog::Post
+
+        xml.item do
+          xml.title item.title
+          xml.description item.html_body
+          xml.pubDate item.published_at.to_s(:rfc822)
+          xml.link post_url(*item.url_params)
+        end
+      
+      else 
+
+        xml.item do
+          xml.title item.name
+          xml.description item.description
+          xml.link event_url(item.slug)
+        end
+
+      end
+    end
+  end
+end

app/views/railsmx/feeds/show.rss.builder

@@ -1,5 +1,5 @@
 atom_feed do |feed|
-  feed.title 'Rails Mx'
+  feed.title 'rails.mx'
   feed.updated @items.first.updated_at if @items.first
   @items.each do |item|
     if item.class == Crowdblog::Post

app/views/railsmx/atom_feeds/show.xml.builder renamed to app/views/railsmx/feeds/show.xml.builder

@@ -8,7 +8,8 @@
     <meta name="description" content="Una comunidad de desarrolladores mexicanos e hispanohablantes.
     Un punto de encuentro para compartir experiencias y mejores prácticas sobre el mundo de rails.">
     <meta name="robots" content="all" >
-    <%= auto_discovery_link_tag(:atom, '/atom.xml') %>
+    <%= auto_discovery_link_tag(:atom, '/blog.xml') %>
+    <%= auto_discovery_link_tag(:rss, '/blog.rss') %>
     <%= favicon_link_tag "favicon-#{ENV['THEME'].downcase}.ico" %>
     <%= stylesheet_link_tag "railsmx" %>
     <%= javascript_include_tag "railsmx" %>

app/views/railsmx/layouts/application.html.erb

@@ -18,7 +18,8 @@
   post "/contacto" => "contact_form#create", as: :contact_form
 
 
-  get "/atom" => 'atom_feeds#show'
+  get "/blog.(:format)" => 'feeds#show'
+
   get "/:id" => "home#show", as: :static
 
   if Rails.env.test?

config/routes.rb

@@ -0,0 +1,28 @@
+require "test_helper"
+
+describe FeedsController do
+
+  describe "using xml as format" do
+    it "should get show" do
+      get :show, format: 'xml'
+      assert_response :success
+    end
+
+    it "should render xml" do
+      get :show, format: 'xml'
+      assert_template :show
+    end
+  end
+  
+  describe "using rss as format" do
+    it "should get show" do
+      get :show, format: 'rss'
+      assert_response :success
+    end
+
+    it "should render rss" do
+      get :show, format: 'rss'
+      assert_template :show
+    end
+  end
+end