Question

{if taxonomy != "" OR related_pages != "" OR related_posts != "" OR related_news != ""}
    <footer role="contentinfo">
        {if taxonomy != ""}
            <div id="taxonomy" itemprop="taxonomy">
                <h3>Category tags for this page</h3>

                <ul property="dcterms:type">
                    {exp:tagger:tags entry_id="{entry_id}" orderby=”tag_name”}
                        <li>
                            <a href="/page/tag/{tagger:urlsafe_tagname}" rel="tag">{tagger:tag_name}</a>
                        </li>
                    {/exp:tagger:tags}
                </ul>
            </div>
        {/if}

        {if related_pages != ""}
            <div id="related-pages">
                {related_entries id="related_pages"}
                    <h3>{title}</h3>
                    {body}
                {/related_entries}
            </div>
        {/if}

        {if related_posts != ""}
            <div id="related-posts">
                {related_entries id="related_posts"}
                    <h3>{title}</h3>
                    {body}
                {/related_entries}
            </div>
        {/if}

        {if related_news != ""}
            <div id="related-news">
                {related_entries id="related_news"}
                    <h3>{title}</h3>
                    {body}
                {/related_entries}
            </div>
        {/if}
    </footer>
{/if}

所以，我正在寻找条件代码，如果任何分类法，related_pages，related_posts或related_news都不为空，首先只显示一个页脚元素。请注意，related_ *是所有关系字段ID。

在此if语句中是嵌套的条件语句，如果相应的ID不为空，则只显示内容块。不幸的是，即使没有选择相关内容，EE似乎也看不到关系字段是空的。

有没有人知道在没有选择内容时关系字段ID解析了什么，或者有其他解决方法来处理我在此代码中尝试做的事情？

Answer 1

有点啰嗦，但是......

{if "{taxonomy}" != "" OR 
    "{related_entries id="related_pages"}{entry_id}{/related_entries}" != "" OR
    "{related_entries id="related_posts"}{entry_id}{/related_entries}" != "" OR
    "{related_entries id="related_news"}{entry_id}{/related_entries}" != ""}
...
{if "{related_entries id="related_pages"}{entry_id}{/related_entries}" != ""}
...
{if "{related_entries id="related_posts"}{entry_id}{/related_entries}" != ""}
...
{if "{related_entries id="related_news"}{entry_id}{/related_entries}" != ""}
...

如果你的预算可以延伸到它，那么Playa附加组件就是关系之王，让人际关系变得轻而易举。

Answer 2

感谢彼得·刘易斯（Peter Lewis）让我走上了正确的道路。请注意，当您在ID周围使用双引号时，您似乎必须在每个引用周围添加它们，否则抛出异常。此外，limit attribute or count isn't available on related_entries但可以使用自定义PHP计数进行处理，如链接的论坛帖子中所示。

以下是适用的模板代码：

{if "{taxonomy}" != "" OR 
    "{related_entries id="related_pages"}{entry_id}{/related_entries}" != "" OR
    "{related_entries id="related_posts"}{entry_id}{/related_entries}" != "" OR
    "{related_entries id="related_news"}{entry_id}{/related_entries}" != ""}
...
{if taxonomy != ""}
...
{if "{related_entries id="related_pages"}{entry_id}{/related_entries}" != ""}
...
{if "{related_entries id="related_posts"}{entry_id}{/related_entries}" !=   ""}
...
{if "{related_entries id="related_news"}{entry_id}{/related_entries}" != ""}
...

具有related_entries的ExpressionEngine条件逻辑

2 个答案: