From 208b8b1ae7991a92dd89f9a67b3a984da1736629 Mon Sep 17 00:00:00 2001
From: Karel Picman <karel.picman@kontron.com>
Date: Fri, 21 Apr 2017 09:40:26 +0200
Subject: [PATCH] #699 Columns visiblity check optimization

---
 app/models/dmsf_folder.rb | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/app/models/dmsf_folder.rb b/app/models/dmsf_folder.rb
index a049558e..cb3c9b8d 100644
--- a/app/models/dmsf_folder.rb
+++ b/app/models/dmsf_folder.rb
@@ -332,6 +332,8 @@ class DmsfFolder < ActiveRecord::Base
     dmsf_files.visible.where(:container_id => self.project_id).count +
     dmsf_links.visible.where(:project_id => self.project_id).count
   end
+
+  @@dmsf_columns = nil
   
   def self.is_column_on?(column)
     unless @@dmsf_columns