ManageIQ/manageiq-ui-classic

.form-group
  %label.col-md-2.control-label
    = _('Expression Object')
  .col-md-8
    = select_tag("#{prefix}exp_object",
                  options_for_select(@edit[:new][:available_expression_objects],
                  @edit[:new][:exp_object]),
                  :class    => "selectpicker",
                  "data-miq_observe" => {:url => url}.to_json)
    :javascript
      miqInitSelectPicker();
      miqSelectPickerEvent("#{prefix}exp_object", "#{url}",  {beforeSend: true})