fixes #1392

2013-04-21 14:23:34 -07:00
parent 3f665244bc
commit c564199f0e
1 changed files with 5 additions and 0 deletions
--- 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