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我正在研究 item_selector 指令，我想为归档元素添加一个指示符，这是项目选择器模板 .haml ：

.directive-items-selector{ ng_click: "openItemsSelector( $event )" }
  .wrapper
    %ui_select.ui-select{ ng: { model:  "input.model", disabled: "disabled",
                                change: "itemSelectModelChanged()" },
                        search_enabled: "{{ options.searchable }}" }

      %ui_select_match.ui-select-match{ items_selector_match: '',
                                        placeholder: "{{ input.placeholder }} ",
                                        allow_clear: "{{ options.clearable }}",
                                        title:       "{{ $select.selected.label }}" }
        %i.fa{ ng_class: 'icon' }

        %span{'ng': {'class': "{'is-archived': $select.selected.object.is_archived === true}"}}
          {{ $select.selected.label }}


      %ui_select_choices.ui-select-choices{ repeat:  "item.id as item in input.filteredItems track by item.id",
                                            refresh: "reloadItems( $select.search )",
                                            refresh_delay: '{{ input.filterDelay }}' }
        .item{ ng_attr_title: "{{ ::item.label }}" }
          .item-label {{ ::item.label }}
          %small.item-details {{ ::item.details }}

    .items-selector-actions
      %a.pointer.action{ ng: { if: 'linkToModal', click: 'openDetails()', disabled: "!model"  }}
        {{ 'btn.details' | translate }}
        %a.pointer.action{ ng: { if: 'createButton && klassName && !disabled', click: 'createItem()' }}
          {{ 'btn.new' | translate }}

我已通过以下方式将直通 css 属性添加到存档元素：

%span{'ng': {'class': "{'is-archived': $select.selected.object.is_archived === true}"}}
   {{ $select.selected.label }

我想添加一个鼠标悬停指示器，告诉用户“此元素已存档”，我在 ui_select.ui-select 的此属性中考虑了 ng_if 多个条件：标题：“{{ $select.selected.label }}”

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if $select.selected.object.is_archived return true : 服装信息 else {{ $select.selected.label }

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