<% b = "index_catalog_nav" %>
<% ItemType.all.each do |item| %>
<% link = items_path item_type_id: item.id %> <%= link_to link, data: { action: "show_main_nav" }, class: b + "__sub_nav-link" do %>

<%=item.name%>

<% end %>
<% unless item.car_model_free %>
<% bb = "index_catalog_nav_sub_nav_body" %>
    <% @vendors[item.id].each do |vendor| %> <%= link_to car_models_path(vendor_id: vendor.id, item_type_id: item.id), remote: true, class: bb + "__list-item-link" do %> <% end %> <% end %>
<% end %>
<% end %>