assign the posts only at one point

This makes it easier to find out, if posts have been found at all. The
next step is to use that information and show a hint when nothing was
found.

controller/post.rb

@@ -21,11 +21,19 @@ SQL
         join(:accounts, :id___account_id => :account_id).
         reverse_order(:written, :posts__id)
 
-      posts = load_fulltextsearch(session, posts) if session.request.params['search']
+      if session.options[:id]
+        posts = posts.filter(:posts__id => session.options[:id].to_i)
+        return RouteNotFound if posts.empty?
+        load_previous_and_next_post(session, posts)
+      else
+        if session.request.params['search']
+          posts = load_fulltextsearch(session, posts)
+        end
+        load_page_information(session, posts)
+        # return no_results if posts.empty?
+      end
 
-      # return when a single posts has to be shown
-      return load_previous_and_next_post(session, posts) if session.options[:id]
-      load_page_information(session, posts)
+      session.options[:posts] = posts
     end
 
     # load posts depending on the pagination
@@ -37,15 +45,10 @@ SQL
       per_page = 10 if per_page < 1
       session.options[:query][:per_page] = per_page if per_page
       session.options[:pages] = posts.count / per_page
-
-      # fetch the posts to show
-      session.options[:posts]  = posts.limit(per_page, page * per_page)
     end
 
     # load a single posts and the ids of the next and previous posts
     def self.load_previous_and_next_post(session, posts)
-      posts = posts.filter(:posts__id => session.options[:id].to_i)
-      session.options[:posts] = posts
       written = posts.first[:written]
       session.options[:post_ids_pn] = DB[PREV_AND_NEXT_QUERY, written, written].first
     end