major refactoring of post sets and pagination, incomplete

app/presenters/paginators/sequential.rb

@@ -0,0 +1,29 @@
+module Paginators
+  class Sequential
+    attr_reader :template, :source
+    delegate :url, :to => :source
+    
+    def initialize(template, source)
+      @template = template
+      @source = source
+    end
+    
+    def pagination_html
+      html = "<menu>"
+      html << '<li>' + template.link_to("&laquo; Previous", prev_url) + '</li>'
+      if next_url
+        html << '<li>' + template.link_to("Next &raquo;", next_url) + '</li>'
+      end
+      html << "</menu>"
+      html.html_safe
+    end
+    
+    def prev_url
+      template.request.env["HTTP_REFERER"] 
+    end
+    
+    def next_url
+      @next_url ||= url(template)
+    end
+  end
+end