<% dir = @item.identifier.to_s[%r{(?<=/)[^/]+}] nav_items_dir = "/_data/#{dir}-nav.yaml" nav_items_exists = !@items[nav_items_dir].nil? is_ee_prefixed = !nav_items_exists && dir != 'ce' nav_items = nav_items_exists ? @items[nav_items_dir] : @items["/_data/default-nav.yaml"] %>