74 lines
2.1 KiB
PHP
74 lines
2.1 KiB
PHP
<?php
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/**
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* Related posts
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* Displays a list of blog links that are related to this current one using shortcode.
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*
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* Usage: [related_posts]
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*
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*/
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function related_posts_shortcode( $atts = '' ) {
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extract(shortcode_atts(array(
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'limit' => '5',
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), $atts));
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global $wpdb, $post, $table_prefix, $category_tree;
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if ($post->ID) {
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// Get tags
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$tags = wp_get_post_tags($post->ID);
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$tagsarray = array();
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foreach ($tags as $tag) {
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$tagsarray[] = $tag->term_id;
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}
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$tagslist = implode(',', $tagsarray);
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if (empty($tagslist)) return;
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if (empty($limit)) $limit = 5;
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// Do the query
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$q = "SELECT p.*, count(tr.object_id) as count
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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
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AND p.post_status = 'publish'
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AND p.post_date_gmt < NOW()
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GROUP BY tr.object_id
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ORDER BY count DESC, p.post_date_gmt DESC
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LIMIT $limit;";
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$related = $wpdb->get_results($q);
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if ( $related ) {
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$retval = '
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<div class="related_posts">
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'.__('Related Posts ¬','comicpress');
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$retval .= '
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<ul><li>';
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$comic_categories = array();
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foreach ($category_tree as $node) {
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$comic_categories[] = end(explode("/", $node));
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}
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$in_comic_cat = 0;
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$counter = 0;
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$retval .= '
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<table class="month-table">';
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foreach($related as $r) :
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if (count(array_intersect($comic_categories, wp_get_post_categories($r->ID))) == 0)
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$retval .= '
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<tr><td class="archive-date" align="right">'.date('M j, Y',strtotime($r->post_date)).'</td><td class="archive-title"><a title="'.wptexturize($r->post_title).'" href="'.get_permalink($r->ID).'">'.wptexturize($r->post_title).'</a></td></tr>';
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endforeach;
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$retval .= '
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</table>';
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} else {
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$retval .= '
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<li>'.__('No related posts found','comicpress').'</li>';
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}
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$retval .= '
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</li></ul>';
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$retval .= '
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</div>';
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return $retval;
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}
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return;
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}
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add_shortcode('related_posts', 'related_posts_shortcode');
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?>
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