sort posts by reverse chronology

lib/autoblog/post.rb

@@ -1,6 +1,8 @@
 module AutoBlog
 
   class Post
+    include Comparable
+    
     MATCHER = /^(\d+-\d+-\d+)-(.*)\.([^.]+)$/
     
     def self.valid?(name)
@@ -20,6 +22,10 @@ module AutoBlog
       self.transform
     end
     
+    def <=>(other)
+      self.date <=> other.date
+    end
+    
     def process(name)
       m, date, slug, ext = *name.match(MATCHER)
       self.date = Time.parse(date)

lib/autoblog/site.rb

@@ -70,7 +70,7 @@ module AutoBlog
     end
     
     def site_payload
-      {"site" => {"time" => Time.now, "posts" => self.posts}}
+      {"site" => {"time" => Time.now, "posts" => self.posts.sort.reverse}}
     end
   end