<% [@my_folder_tree, @shared_folder_tree].each do |tree| %>
<% tree.each do |foldernode| %>
<% if foldernode[:object].is_a? String %>
<% [@my_folder_tree, @shared_folder_tree].each do |tree| %>
<% tree.each do |foldernode| %>
<% if foldernode[:object].is_a? String %>