Ability to delete a version from a wiki page history (#10852).

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@10705 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/controllers/wiki_controller.rb

@@ -35,7 +35,7 @@ class WikiController < ApplicationController
   default_search_scope :wiki_pages
   before_filter :find_wiki, :authorize
   before_filter :find_existing_or_new_page, :only => [:show, :edit, :update]
-  before_filter :find_existing_page, :only => [:rename, :protect, :history, :diff, :annotate, :add_attachment, :destroy]
+  before_filter :find_existing_page, :only => [:rename, :protect, :history, :diff, :annotate, :add_attachment, :destroy, :destroy_version]
 
   helper :attachments
   include AttachmentsHelper
@@ -237,6 +237,14 @@ class WikiController < ApplicationController
     redirect_to :action => 'index', :project_id => @project
   end
 
+  def destroy_version
+    return render_403 unless editable?
+
+    @content = @page.content_for_version(params[:version])
+    @content.destroy
+    redirect_to_referer_or :action => 'history', :id => @page.title, :project_id => @project
+  end
+
   # Export wiki to a single pdf or html file
   def export
     @pages = @wiki.pages.all(:order => 'title', :include => [:content, :attachments], :limit => 75)