Use Get_the_Excerpt在循环外不返回任何内容

时间：2017-11-29 作者：Dev Daniel

我正在尝试使用get\\u the\\u摘录获取一篇博客文章的摘录，每次都会返回空白，我无法找出我做错了什么。这是我得到的：

模板：

<div class="col-sm-12">
                    <?php $blogPost1 = wp_get_recent_posts( array(
                                                                \'numberposts\' => 1,
                                                                \'category\'    => 42,
                                                                \'orderby\'     => \'post_date\',
                                                                \'order\'       => \'DESC\'
                                                            ) ); ?>

                    <h1><?php echo $blogPost1[0][\'post_title\']; ?></h1>
                    <br>
                    <?php echo get_the_excerpt( $blogPost1[0][\'ID\'] ); ?>
                    <br>
                </div>
我的内容：

https://youtu.be/BF2Ksrxu_QY
<div></div>
<div>Ok, so I’m supposed to be writing a review for this month’s film review- but I’m genuinely struggling to keep a straight face, let alone to not just crack up laughing. ‘Why?’, you may ask; well, the reason is: this month’s film is <i>The Snowman</i>, and I don’t think I’ve laughed so hard at something so unintentionally funny, in such a long time. Yes, I know what you’re thinking- but isn’t <i>The Snowman</i> that new crime thriller film with what’s-his-name-<i>Fassbender</i> in it? And the answer is yes, it is- but I think the filmmakers have missed a trick here, it really should’ve just been made as an intentional comedy!</div>
<div></div>
<!--more-->
<div>It is safe to say that when I heard Swedish Director, <i>Tomas Alfredson</i> (who has made such greats as: <i>Tinker Tailor Soldier Spy</i> and <i>Let The Right One In</i>), was going to be taking the helm of this project, I was excited to watch the finished product (despite the fact that <i>Martin Scorsese</i> had been the original Director on board); however the Crime novel, penned by Norwegian writer, <i>Jo Nesbø</i> (which also happens to be the 7th book in the ‘Detective Harry Hole’ series), was not in safe hands- as it turns out.</div>
我不确定我做错了什么，或者我应该做什么。

1 个回复
SO网友:Jacob Peattie

如果帖子没有手动摘录（如添加到帖子编辑屏幕上的摘录框中），则get_the_excerpt() 习惯于wp_trim_excerpt() 生成摘录。问题是wp_trim_excerpt() 使用全局$post 对象，该对象在循环中设置，而不考虑传递给的任何IDget_the_excerpt().

So使用get_the_excerpt() 在需要使用的循环之外setup_postdata() 设置全局$post 至所需职位：

<?php 
$blogPost1 = wp_get_recent_posts( array(
    \'numberposts\' => 1,
    \'category\'    => 42,
    \'orderby\'     => \'post_date\',
    \'order\'       => \'DESC\'
) ); 

global $post;

$post = $blogPost1[0]; // Post must be assigned to the global $post variable.

setup_postdata( $post );
?>

<!--  Now you can use template tags without specifying the ID. -->
<h1><?php the_title(); ?></h1>
<br>
<?php the_excerpt(); ?>
<br>

<?php wp_reset_postdata(); ?>
但是，根据您提供的内容，您正在使用<!--more--> 标记，因此您实际上不需要摘录。仅显示需要使用的“更多”标记上方的内容the_content(). the_content() 这样，more标记上方的内容仅显示在非单数页上，而全文则显示在单页上。请注意，此行为与the_content() 是否在主查询中。要强制它仅显示more标记上方的内容，您需要使用全局$more 变量：

setup_postdata( $post );

global $more;

$original_more = $more;
$more = 0;
?>

<h1><?php the_title(); ?></h1>
<br>
<?php the_content(); ?>
<br>

<?php 
wp_reset_postdata(); 

$more = $original_more;

结束
标签： excerpt   小码农  

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