Purged git history and removed sensitive information.

app/controllers/versions_controller.rb

@@ -0,0 +1,32 @@
+class VersionsController < ApplicationController
+  before_filter :get_article
+
+  def index
+    @versions = @article.versions
+    render "articles/history"
+  end
+
+  def show
+    @version = @article.versions.find params[:id]
+    @nobody = true
+    render "articles/version"
+  end
+
+  def update
+    raise AccessError unless @article.can_update? cuser
+    @version = @article.versions.find params[:id]
+    @nobody = true
+
+    if @article.revert_to! @version.version
+      flash[:notice] = t(:articles_revert, :version => @version.version)
+    end
+
+    redirect_to @article
+  end
+
+  private
+
+  def get_article
+    @article = Article.find(params[:article_id])
+  end
+end