该值未在此插件中获取和显示。当我在主题的其他地方添加代码时，它工作正常。
<?php
function related_posts( $atts ) {
// set the category ID (or multiple category IDs)
// you want to ignore in the following array
$cats_to_ignore = array( 2 );
$categories = wp_get_post_categories( get_the_ID() );
$category_in = array_diff( $categories, $cats_to_ignore );
// ignore only if we have any category left after ignoring
if( count( $category_in ) == 0 ) {
$category_in = $categories;
}
$cat_args = array(
\'category__in\' => $category_in,
\'posts_per_page\' => 5,
\'orderby\' => \'date\',
\'post__not_in\' => array( get_the_ID() )
);
$cat_query = new WP_Query( $cat_args );
while ( $cat_query->have_posts() ) : $cat_query->the_post();
/* just example markup for related posts */
echo \'<li style="list-style: none;"><a href="\' . get_the_permalink() . \'">\' . get_the_title() . \'</a></li>\';
$gread = get_post_meta($post->ID, \'read_time\', true);
$gdate = get_the_date();
echo \'<span style="font-size:12px; margin-left: 22px;"> Read Time: \'.$gread.\' Minutes </span>\';
echo \'<span style="font-size:12px; margin-left: 22px;"> Posted: \'.$gdate.\' </span>\';
endwhile;
// reset $post after custom loop end
}
add_shortcode( \'relatedpost\', \'related_posts\' );
SO网友:Max Yudin
你没有$post 对象，但尝试在代码中使用它($post->ID). 使用get_the_ID() 改为函数：
<?php
while ( $cat_query->have_posts() ) : $cat_query->the_post();
// $gread = get_post_meta( $post->ID, \'read_time\', true ); // Wrong
$gread = get_post_meta( get_the_ID(), \'read_time\', true ); // Right
endwhile;
}
从现在开始
always enable debugging 当你发展的时候。这样你就可以避免浪费时间和问一些不切实际的问题。
