获取自定义帖子类型的后置元数据

Question

我创建自定义帖子类型“组合”并使用值键“_portfolio_name_value_key”创建自定义元框。但是当我尝试在前端检索保存的值时，它没有显示。我在single-portfolio.php页面中使用了这段代码：<?php get_post_meta( $post->ID, '_portfolio_name_value_key' ); ?>，

但是标题，特色图片，自定义分类和内容都没有问题显示。这是我用过的完整代码：

<?php 
                    if ( have_posts() ) :
                    while ( have_posts() ) : the_post(); ?>


         <div class=row>
            <div class="col-xs-12 col-md-8 col-sm-8">
               <div class="owl-carousel owl-theme project-detail-carousel"id=project_detail>
                  <div class=project-detail-item><img alt=p-detail src="<?php the_post_thumbnail(''); ?>"></div>
                </div>
            </div>
            <div class="col-xs-12 col-sm-4 col-md-4">
               <div class=project-detail-1>
                  <h2><?php the_title(); ?></h2>
                  <ul>
                     <li><span>Client:</span><?php get_post_meta( $post->ID, '_portfolio_name_value_key' ); ?>
                     <li><span>Category:</span> <?php the_terms( $post->ID, 'field' ); ?>
                     <li><span>Status:</span> <?php get_post_meta( $post->ID, '_portfolio_status_value_key' ); ?>
                     <li><span>Tags:</span> <?php the_terms( $post->ID, 'ptag' ); ?>
                     <li><span>Date:</span> <?php get_post_meta( $post->ID, '_portfolio_date_value_key' ); ?>
                  </ul>
               </div>
            </div>
         </div>
         <div class="row mt-50">
            <div class=col-md-12>
               <div class=project-detail-1-info>
                  <h3>A little About This Project</h3>
                  <div class=text-content>
                    <?php the_content(); ?>
                  </div>
               </div>
            </div>
        </div>

        <?php 
        endwhile;
    endif;      

     ?>

Answer 1

因为看起来你正在使用一个循环。在循环中，您应该使用get_the_ID()函数。

从：

<?php get_post_meta( $post->ID, '_portfolio_name_value_key' ); ?>

至：

<?php get_post_meta(get_the_ID(), '_portfolio_name_value_key' ); ?>

Answer 2

试试这个：-

<?php 

$wpb_all_query = new WP_Query(array('post_type'=>'post', 'post_status'=>'publish', 'posts_per_page'=>-1));
                    if ( $wpb_all_query->have_posts() ) { ?>
	<div class=row>
            <div class="col-xs-12 col-md-8 col-sm-8">
               <div class="owl-carousel owl-theme project-detail-carousel"id=project_detail>
                  <div class=project-detail-item><img alt=p-detail src="<?php the_post_thumbnail(''); ?>"></div>
                </div>
            </div>
            <div class="col-xs-12 col-sm-4 col-md-4">
               <div class=project-detail-1>
                  <h2><?php the_title(); ?></h2>
                  <ul>
                     <li><span>Client:</span><?php get_post_meta( get_the_ID(), '_portfolio_name_value_key', true ); ?>
                     <li><span>Category:</span> <?php the_terms( get_the_ID(), 'field' ,true ); ?>
                     <li><span>Status:</span> <?php get_post_meta( get_the_ID(), '_portfolio_status_value_key' ,true ); ?>
                     <li><span>Tags:</span> <?php the_terms( get_the_ID(), 'ptag' ,true ); ?>
                     <li><span>Date:</span> <?php get_post_meta( get_the_ID(), '_portfolio_date_value_key' ,true ); ?>
                  </ul>
               </div>
            </div>
         </div>
         <div class="row mt-50">
            <div class=col-md-12>
               <div class=project-detail-1-info>
                  <h3>A little About This Project</h3>
                  <div class=text-content>
                    <?php the_content(); ?>
                  </div>
               </div>
            </div>
        </div>
		<?php wp_reset_postdata(); }?>
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