app/overrides/add_link_to_users_favorite_products.rb
Deface::Override.new(
virtual_path: "spree/shared/_main_nav_bar",
name: "add_link_to_users_favorite_products",
insert_after: "#home-link",
text: "<% if spree_current_user %><li><%= link_to 'Favorite Products', favorite_products_path %></li><% end %>",
sequence: { before: "auth_shared_login_bar"}
)