目的：

判断是否有下载链接和判断是否有官网链接，如果没有就显示不同的图标和不能点击跳转。

实现代码：

<div class="btn-group btn-group-justified m-b {dede:field.baiduyun runphp=&#39;yes&#39;}if(@me ==&#39;&#39;){@me=&#39;normal-cursor&#39;;}else{@me=&#39;&#39;;}{/dede:field.baiduyun}">
              <a href="{dede:field.baiduyun/}" class="btn btn-success btn-rounded">
                <i class="{dede:field.baiduyun runphp=&#39;yes&#39;}if(@me ==&#39;&#39;){@me=&#39;fa fa-times&#39;;}else{@me=&#39;icon-cloud-download&#39;;}{/dede:field.baiduyun}"></i> 百度云
              </a>
              <a {dede:field.guanwang runphp=&#39;yes&#39;}if(@me ==&#39;&#39;){@me=&#39;&#39;;}else{@me=&#39;"href=\"&#39;@me&#39;\"&#39;;}{/dede:field.guanwang} class="btn btn-dark btn-rounded {dede:field.guanwang runphp=&#39;yes&#39;}if(@me ==&#39;&#39;){@me=&#39;normal-cursor&#39;;}else{@me=&#39;&#39;;}{/dede:field.guanwang}">
                <i class="{dede:field.guanwang runphp=&#39;yes&#39;}if(@me ==&#39;&#39;){@me=&#39;fa fa-eye-slash&#39;;}else{@me=&#39;fa fa-eye&#39;;}{/dede:field.guanwang}"></i> 官网/Store
              </a>
            </div>

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