Using Query Loop Block to show related posts?
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I’m building a site using full site editing for the first time (I’ve built dozens of ‘classic’ theme sites in the past). Wherever possible I’ve been using core blocks and only creating custom blocks or block variations when I have to. All my archive templates have been built using the core Query Loop Block.
Now I need to display a simple ‘related posts’ section at the bottom of a single post template. I want to use (or create a variation of) the query loop block if at all possible so I can re-use the post template from my archive pages. Is there any way to customise the Query Loop Block query in this way? The ‘algorithm’ I want is fairly simple (just showing posts with tags that match the current post’s tags and excluding the current post) but I can’t figure out how to customise the Query Loop Block’s query beyond the limited options in the settings panel.
Any suggestions would be appreciated 👍
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Thank you both. If I was going to be handing this one off to a client I would probably create a variation and take that approach but for this, I’ve used the pre_get_posts hook. For anyone else trying to achieve something similar, here’s what I did…
function modify_related_query_loop_block($query) {
if (!is_admin()) {
// This is the specific query configured on the Query Loop block in the Related Messages section
if ($query->get('post_type') == 'page' && $query->get('orderby') == 'title' && $query->get('order') == 'DESC') {
global $post;
if ($post) {
$terms = wp_get_post_terms($post->ID, 'message-topic');
$term_ids = [];
foreach ($terms as $term) {
$term_ids[] = $term->term_id;
}
$query->set('post_type', 'location');
$query->set('orderby', 'rand');
// Exclude the current post
$query->set('post__not_in', array($post->ID));
if (!empty($term_ids)) {
add_filter('posts_clauses', function ($clauses, $wp_query) use ($term_ids) {
global $wpdb;
$term_ids_in = implode(',', array_map('intval', $term_ids));
$clauses['join'] .= "
LEFT JOIN (
SELECT object_id, COUNT(*) as term_count
FROM $wpdb->term_relationships
WHERE term_taxonomy_id IN ($term_ids_in)
GROUP BY object_id
) as term_matches
ON $wpdb->posts.ID = term_matches.object_id
";
$clauses['orderby'] = 'term_matches.term_count DESC, ' . $clauses['orderby'];
return $clauses;
}, 10, 2);
}
}
}
}
}
add_action('pre_get_posts', 'modify_related_query_loop_block');
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