Resolved issue of changing rss feed ids when changing the slugs of nodes

Closes #35

2 files changed, 10 insertions, 2 deletions

diff --git a/app/models/node.rb b/app/models/node.rb
index 9bfea52..7e64fdd 100644
--- a/app/models/node.rb
+++ b/app/models/node.rb
@@ -165,6 +165,14 @@ class Node < ActiveRecord::Base
     head_id
   end
   
+  # Returns immutable node id for all new nodes so that the atom feed entry ids
+  # stay the same eventhough the slug or positions changes.
+  # Can be removed after a year or so ;)
+  def feed_id
+    new_id_format_date = "2009-11-14".to_time
+    self.created_at < new_id_format_date ? unique_path : id
+  end
+  
   protected
     def lock_for! current_user
       self.lock_owner = current_user
diff --git a/app/views/rss/updates.xml.builder b/app/views/rss/updates.xml.builder
index 451e724..cc9c859 100644
--- a/app/views/rss/updates.xml.builder
+++ b/app/views/rss/updates.xml.builder
@@ -14,11 +14,11 @@ xml.feed(:xmlns => "http://www.w3.org/2005/Atom", "xml:base" => @host) do
     xml.entry do
       xml.title(item.title)
       xml.link(
-        :href => "#{@host}/de/#{item.node.unique_name}",
+        :href => content_url(:page_path => item.node.unique_path),
         :rel  => "alternate",
         :type => "text/html"
       )
-      xml.id("#{@host}/de/#{item.node.unique_name}")
+      xml.id(content_url(:page_path => item.node.feed_id))
       xml.updated(item.published_at.xmlschema)
       xml.content(:type => "xhtml") do
         xml.div(item.body, :xmlns => "http://www.w3.org/1999/xhtml")