From 16454549fee5eb0fc827e825ce392877b118cda4 Mon Sep 17 00:00:00 2001
From: Alexey Verkhovsky <averkhov@thoughtworks.com>
Date: Tue, 27 Sep 2005 03:30:01 +0000
Subject: [PATCH] Fixed a nasty bug that caused Instiki to go into an endless
 loop on call to /wiki/print/

---
 app/controllers/revision_sweeper.rb | 4 ++++
 app/controllers/wiki_controller.rb  | 3 +++
 2 files changed, 7 insertions(+)

diff --git a/app/controllers/revision_sweeper.rb b/app/controllers/revision_sweeper.rb
index 1ab4676b..879274e3 100644
--- a/app/controllers/revision_sweeper.rb
+++ b/app/controllers/revision_sweeper.rb
@@ -23,5 +23,9 @@ class RevisionSweeper < ActionController::Caching::Sweeper
         :action => %w(authors recently_revised list)
     expire_fragment :controller => 'wiki', :web => web.address,
         :action => %w(rss_with_headlines rss_with_content)
+    WikiReference.pages_that_reference(page.name).each do |ref|
+      expire_action :controller => 'wiki', :web => web.address,
+          :action => %w(show published), :id => ref.page.name
+    end
   end
 end
diff --git a/app/controllers/wiki_controller.rb b/app/controllers/wiki_controller.rb
index fdd83d21..787f8c6a 100644
--- a/app/controllers/wiki_controller.rb
+++ b/app/controllers/wiki_controller.rb
@@ -156,6 +156,9 @@ class WikiController < ApplicationController
   end
 
   def print
+    if @page.nil?
+      redirect_home
+    end
     @link_mode ||= :show
     @renderer = PageRenderer.new(@page.revisions.last)
     # to template