antd Cascader 级联多选全路径展示

               :display-render="displayRender"


      <a-cascader
              v-model:value="formData.fundingSource"
              :options="fundingSourceCascader"
              expand-trigger="hover"
              multiple
              placeholder="请选择"
               :display-render="displayRender"
            />

  // 处理资金来源
  const displayRender = ({labels}) => {
    if (!Array.isArray(labels)) {
      console.error('labels is not an array:', labels);
      return '';
    }

    return labels.filter(label => label != null).join(' / ');
  };