submit-social-housing-lettings-and-sales-data/app/views/form/age.html.erb

<%= turbo_frame_tag "form" %>
  <%= form_with url:'/test', builder: GOVUKDesignSystemFormBuilder::FormBuilder do |f| %>
    <%= f.govuk_number_field :age, label: { text: "Test" } %>
    <%= f.govuk_submit %>
  <% end %>