app/assets/stylesheets/active_scaffold_jquery_ui.css.erb
<% if Jquery::Rails.const_defined? 'JQUERY_UI_VERSION' %>
<% require_asset "jquery-ui" %>
<% elsif Jquery.const_defined? 'Ui' %>
<% if Jquery::Ui::Rails::VERSION < '5.0.0' %>
<% require_asset "jquery.ui.datepicker" %>
<% else %>
<% require_asset "jquery-ui/datepicker" %>
<% end %>
<% end %>
<% require_asset "jquery-ui-theme" if ActiveScaffold.jquery_ui_included? %>