manyfold/app/views/application/_navbar.html.erb

<nav class="navbar navbar-expand-lg bg-body-tertiary">
  <div class='container-fluid'>
    <a class="navbar-brand ms-2" href="<%= root_path %>" aria-label="<%= translate ".home" %>">
      <%= image_tag "roundel.svg", alt: translate("application.title"), height: "40px", class: "me-2" %>
      <span class="d-lg-none"><%= t "application.title" %></span>
    </a>
    <button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbar" aria-controls="navbarTogglerDemo01" aria-expanded="false" aria-label="<%= translate ".navbar.toggler.label" %>">
      <span class="navbar-toggler-icon"></span>
    </button>
    <div class="collapse navbar-collapse row" id="navbar">
      <ul class="navbar-nav col-6 ps-4 ps-lg-0 align-self-start">
        <li class="nav-item">
          <%= nav_link "box", Model.model_name.human(count: 100), models_path(@filters) %>
        </li>
        <li class="nav-item">
          <%= nav_link "people", Creator.model_name.human(count: 100), creators_path(@filters&.except(:creator)) %>
        </li>
        <li class="nav-item">
          <%= nav_link "collection", Collection.model_name.human(count: 100), collections_path(@filters&.except(:collection)) %>
        </li>
        <% policy_scope(Library).find_each do |library| %>
          <li class="nav-item">
            <%= nav_link(
                  library.icon.presence || "boxes",
                  library.name,
                  models_path((@filters&.except(:library) || {}).merge({library: library.id})),
                  title: library.caption
                )	%>
          </li>
        <% end %>
      </ul>
      <ul class="navbar-nav col-6 pe-4 align-self-start justify-content-end">
        <li class="nav-item">
          <%= nav_link "plus-circle", t("libraries.general.new"), new_library_path, text_style: "d-lg-none" if policy(:library).new? %>
        </li>
        <li class="nav-item">
          <%= nav_link "upload", t(".upload"), new_model_path, style: "btn btn-warning btn-sm me-1 mt-lg-1" if policy(:upload).index? %>
        </li>
        <li class="nav-item">
          <% if policy(:library).scan? %>
            <% if @scan_in_progress %>
              <%= nav_link "", t(".scanning"), "/activity", style: "btn btn-outline-warning btn-sm me-1 mt-lg-1", icon_style: "spinner-border spinner-border-sm" %>
            <% else %>
              <div class="btn-group">
                <button type="button" data-bs-toggle="dropdown" aria-expanded="false"
                  class="btn btn-warning btn-sm mt-1 dropdown-toggle">
                  <%= t ".scan" %>
                </button>
                <ul class="dropdown-menu">
                  <li><%= link_to t(".scan_changes"), scan_libraries_path, method: :post, class: "dropdown-item" %></li>
                  <li><%= link_to t(".check_existing"), scan_libraries_path(type: :check), method: :post, class: "dropdown-item" %>
                </ul>
              </div>
            <% end %>
          <% end %>
        </li>
        <%- if current_user %>
          <% if policy(Problem).index? && Problem.visible(current_user.problem_settings).count > 0 %>
            <li class="nav-item">
              <% severity = max_problem_severity %>
              <%= nav_link problem_icon(severity),
                    Problem.model_name.human(count: 100),
                    problems_path,
                    title: translate("problems.severities.#{severity}"), # rubocop:todo I18n/RailsI18n/DecorateStringFormattingUsingInterpolation
                    icon_style: "link-#{severity}",
                    text_style: "d-lg-none",
                    aria_label: Problem.model_name.human(count: 100) %>
            </li>
          <% end %>
          <% if policy(:activity).index? %>
            <li class="nav-item">
              <%= nav_link "activity", t(".activity"), "/activity", text_style: "d-lg-none" %>
            </li>
          <% end %>
          <li class="nav-item">
            <%= nav_link "sliders", t(".settings"), user_settings_path(current_user), text_style: "d-lg-none" %>
          </li>
        <% end %>
        <li class="nav-item">
          <%= form_with url: models_path, method: :get, role: "search" do |f| %>
            <%= f.search_field :q, class: "form-control ms-1 me-3", placeholder: translate(".search"), aria_label: translate(".search"), aria_describedby: "button-search", value: params[:q] %>
          <% end %>
        </li>
        <%- if SiteSettings.multiuser_enabled? %>
          <%- if current_user %>
            <li class="nav-item">
              <%= nav_link "person", t(".account"), edit_user_registration_path, text_style: "d-lg-none" %>
            </li>
          <% end %>
          <li class="nav-item">
            <%- if current_user %>
              <%= nav_link "box-arrow-right", t(".log_out"), destroy_user_session_path, method: :delete, title: translate(".log_out"), text_style: "d-lg-none" %>
            <% else %>
              <%= nav_link "box-arrow-in-right", "", new_user_session_path, title: translate(".log_in") %>
            <% end %>
          </li>
        <%- end %>
      </ul>
    </div>
  </div>
</nav>