Ticket #15400: 15400-updated.patch

wp-includes/default-widgets.php

@@ -649 +649 @@
                 else if ( $number < 1 )
                         $number = 1;
 
+                add_action('comments_clauses', array( 'WP_Widget_Recent_Comments', 'comments_query_filter'));
                 $comments = get_comments( array( 'number' => $number, 'status' => 'approve' ) );
+                remove_action('comments_clauses', array( 'WP_Widget_Recent_Comments', 'comments_query_filter'));
                 $output .= $before_widget;
                 if ( $title )
                         $output .= $before_title . $title . $after_title;
@@ -657 +659 @@
                 $output .= '<ul id="recentcomments">';
                 if ( $comments ) {
                         foreach ( (array) $comments as $comment) {
-                                $output .=  '<li class="recentcomments">' . /* translators: comments widget: 1: comment author, 2: post link */ sprintf(_x('%1$s on %2$s', 'widgets'), get_comment_author_link(), '<a href="' . esc_url( get_comment_link($comment->comment_ID) ) . '">' . get_the_title($comment->comment_post_ID) . '</a>') . '</li>';
+                                $ispostcached = wp_cache_get($comment->ID, 'posts') == false ? false : true;
+                                if(!$ispostcached) {
+                                        wp_cache_add($comment->ID, $comment, 'posts');
+                                }
+                                $output .=  '<li class="recentcomments">' . /* translators: comments widget: 1: comment author, 2: post link */ sprintf(_x('%1$s on %2$s', 'widgets'), get_comment_author_link(), '<a href="' . esc_url( get_comment_link($comment) ) . '">' . get_the_title($comment) . '</a>') . '</li>';
+                                if(!$ispostcached) {
+                                        wp_cache_delete($comment->ID, 'posts');
+                                }
                         }
                 }
                 $output .= '</ul>';
@@ -692 +701 @@
                 <input id="<?php echo $this->get_field_id('number'); ?>" name="<?php echo $this->get_field_name('number'); ?>" type="text" value="<?php echo $number; ?>" size="3" /></p>
 <?php
         }
+
+        function comments_query_filter($pieces) {
+                global $wpdb;
+
+                $pieces['join'] .= " LEFT JOIN $wpdb->posts ON ( $wpdb->comments.comment_post_ID = $wpdb->posts.ID )";
+
+                return $pieces;
+        }
 }
 
 /**