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December 25, 2015 12:31
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// shortcode to show related posts by tags | |
function related_posts_shortcode( $atts ) { | |
extract(shortcode_atts(array( | |
'limit' => '5', | |
), $atts)); | |
global $wpdb, $post, $table_prefix; | |
if ($post->ID) { | |
$retval = ' | |
<h5 class="relatedposts">Related Posts</h5> <ul class="jimmys_relatedposts">'; | |
// Get tags | |
$tags = wp_get_post_tags($post->ID); | |
$tagsarray = array(); | |
foreach ($tags as $tag) { | |
$tagsarray[] = $tag->term_id; | |
} | |
$tagslist = implode(',', $tagsarray); | |
// Do the query | |
$q = " | |
SELECT p.*, count(tr.object_id) as count | |
FROM $wpdb->term_taxonomy AS tt, $wpdb->term_relationships AS tr, $wpdb->posts AS p | |
WHERE tt.taxonomy ='post_tag' | |
AND tt.term_taxonomy_id = tr.term_taxonomy_id | |
AND tr.object_id = p.ID | |
AND tt.term_id IN ($tagslist) | |
AND p.ID != $post->ID | |
AND p.post_status = 'publish' | |
AND p.post_date_gmt < NOW() | |
GROUP BY tr.object_id | |
ORDER BY count DESC, p.post_date_gmt DESC | |
LIMIT $limit;"; | |
$related = $wpdb->get_results($q); | |
if ( $related ) { | |
foreach($related as $r) { | |
$retval .= ' | |
<li><a title="'.wptexturize($r->post_title).'" href="'.get_permalink($r->ID).'">'.wptexturize($r->post_title).'</a></li> | |
'; | |
} | |
} else { | |
$retval .= ' | |
<li>No related posts found</li> | |
'; | |
} | |
$retval .= '</ul> | |
'; | |
return $retval; | |
} | |
return; | |
} | |
add_shortcode('related_posts', 'related_posts_shortcode'); |
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