blogging.rb in nanoc-4.4.3

- old
+ new

@@ -70,10 +70,14 @@
 
       def last_article
         sorted_relevant_articles.first
       end
 
+      def updated
+        relevant_articles.map { |a| attribute_to_time(a[:updated_at] || a[:created_at]) }.max
+      end
+
       def validate_config
         if @config[:base_url].nil?
           raise Nanoc::Int::Errors::GenericTrivial.new('Cannot build Atom feed: site configuration has no base_url')
         end
       end
@@ -107,10 +111,10 @@
           # Add primary attributes
           xml.id root_url
           xml.title title
 
           # Add date
-          xml.updated(attribute_to_time(last_article[:created_at]).__nanoc_to_iso8601_time)
+          xml.updated(updated.__nanoc_to_iso8601_time)
 
           # Add links
           xml.link(rel: 'alternate', href: root_url)
           xml.link(rel: 'self',      href: feed_url)
 