From c564199f0e8d7dfae921cb1e666196095800d38d Mon Sep 17 00:00:00 2001 From: r888888888 Date: Sun, 21 Apr 2013 14:23:34 -0700 Subject: [PATCH] fixes #1392 --- app/controllers/wiki_page_versions_controller.rb | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/app/controllers/wiki_page_versions_controller.rb b/app/controllers/wiki_page_versions_controller.rb index daacdb83b..685be53a1 100644 --- a/app/controllers/wiki_page_versions_controller.rb +++ b/app/controllers/wiki_page_versions_controller.rb @@ -16,6 +16,11 @@ class WikiPageVersionsController < ApplicationController end def diff + if params[:thispage].blank? || params[:otherpage].blank? + redirect_to :back, :notice => "You must select two versions to diff" + return + end + @thispage = WikiPageVersion.find(params[:thispage]) @otherpage = WikiPageVersion.find(params[:otherpage]) end