WordPress 7B2 Pro主题美化：文章底部添加所属专题

在主题目录下functions.php文件合适位置添加如下代码：

/**
* 调用该文章所在专题的其他文章
* https://www.77388.cn/Plus/1849.html
*/
function b2child_get_collection_posts_list( $location = 'before' ) {
 
if( is_singular('post') ) {
 
$post_id = get_the_ID();
 
if( has_term( '', 'collection' ) ) {
$terms = get_the_terms( $post_id, 'collection' );
if( $terms && !is_wp_error($terms) ) {
foreach ( $terms as $term ) {
$term_id = $term->term_id;
$term_name = $term->name;
$term_desc = $term->description;
 
$args = array(
'post_type' => 'post',
'posts_per_page' => -1,
'nopaging' => true,
'ignore_sticky_posts' => true,
'order' => 'ASC',
'tax_query' => array(
array(
'taxonomy' => 'collection',
'field' => 'term_id',
'terms' => $term_id,
),
),
);
 
$the_query = new WP_Query( $args );
 
$count = $current = false;
 
if ( $the_query->have_posts() ) {
 
ob_start();
 
$i = 1;
while ( $the_query->have_posts() ) {
$the_query->the_post();
 
$count = $the_query->found_posts;
if( $post_id == get_the_ID() ) {
$current = $i;
}
$i++;
}
 
$class = 'collection-before';
if( $location == 'after' ) $class = 'collection-after';
 
if( ($location == 'before' && $current > 1) || ($location == 'after' && $current < $count) ){
 
echo '<div class="collection-posts '.$class.'">';
 
if( $location == 'before' ) {
echo '<p class="before">文本是《<a target="_blank" title="'.$term_desc.'" href="'.esc_url( get_term_link($term_id) ).'">'.$term_name.'（共'.$count.'篇）</a>》专题的第 '.$current.' 篇。阅读本文前，建议先阅读前面的文章：</p>';
} elseif ( $location == 'after' ) {
echo '<p class="after">您已阅读完《<a target="_blank" title="'.$term_desc.'" href="'.esc_url( get_term_link($term_id) ).'">'.$term_name.'（共'.$count.'篇）</a>》专题的第 '.$current.' 篇。请继续阅读该专题下面的文章：</p>';
}
 
echo '<ul class="collection-posts-ul ">';
 
$i = 1; 
while ( $the_query->have_posts() ) {
$the_query->the_post();
 
if( ( $location == 'before' && $i < $current ) || ( $location == 'after' && $i > $current ) ) {
echo '<li><span>'.$i.'.</span><a href="'.esc_url( get_permalink() ).'">' . get_the_title() . '</a></li>';
}
 
$i++;
}
 
echo '</ul>';
 
echo '</div>';
}
}
wp_reset_postdata();
 
return ob_get_clean();
 
}
}
}
 
}
}
/**
* 文章中添加该文章所属专题的其他文章列表
* https://www.77388.cn/Plus/1849.html
*/
function b2child_display_collection_posts( $content ) {
 
if( is_singular('post') ) {
 
$before = b2child_get_collection_posts_list( 'before' );
 
$after = b2child_get_collection_posts_list( 'after' );
 
$content = $before ."\n". $content ."\n". $after;
}
 
return $content;
 
}
add_filter('the_content', 'b2child_display_collection_posts' );

相关CSS文件：