From f888f1cc64160088a25d4df7952d617d57193548 Mon Sep 17 00:00:00 2001
From: Ryan Boren <ryan@git.wordpress.org>
Date: Wed, 20 Apr 2011 18:02:41 +0000
Subject: [PATCH] Allow retrieving comments by post type, status, author,
 author, name, or parent.  Fetch only published posts for recent comments
 widget. Props filosofo. fixes #16506 #12904

git-svn-id: https://develop.svn.wordpress.org/trunk@17667 602fd350-edb4-49c9-b593-d223f7449a82
---
 wp-includes/comment.php         | 12 ++++++++++++
 wp-includes/default-widgets.php |  2 +-
 2 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/wp-includes/comment.php b/wp-includes/comment.php
index 08919f3158..3dea3be15b 100644
--- a/wp-includes/comment.php
+++ b/wp-includes/comment.php
@@ -213,6 +213,11 @@ class WP_Comment_Query {
 			'parent' => '',
 			'post_ID' => '',
 			'post_id' => 0,
+			'post_author' => '',
+			'post_name' => '',
+			'post_parent' => '',
+			'post_status' => '',
+			'post_type' => '',
 			'status' => '',
 			'type' => '',
 			'user_id' => '',
@@ -319,6 +324,13 @@ class WP_Comment_Query {
 		if ( '' !== $search )
 			$where .= $this->get_search_sql( $search, array( 'comment_author', 'comment_author_email', 'comment_author_url', 'comment_author_IP', 'comment_content' ) );
 
+		$post_fields = array_filter( compact( array( 'post_author', 'post_name', 'post_parent', 'post_status', 'post_type', ) ) );
+		if ( ! empty( $post_fields ) ) {
+			$join = "JOIN $wpdb->posts ON $wpdb->posts.ID = $wpdb->comments.comment_post_ID";
+			foreach( $post_fields as $field_name => $field_value )
+				$where .= $wpdb->prepare( " AND {$wpdb->posts}.{$field_name} = %s", $field_value );
+		}
+
 		$pieces = array( 'fields', 'join', 'where', 'orderby', 'order', 'limits' );
 		$clauses = apply_filters_ref_array( 'comments_clauses', array( compact( $pieces ), &$this ) );
 		foreach ( $pieces as $piece )
diff --git a/wp-includes/default-widgets.php b/wp-includes/default-widgets.php
index 8f3ad310f7..dc1c9ec880 100644
--- a/wp-includes/default-widgets.php
+++ b/wp-includes/default-widgets.php
@@ -640,7 +640,7 @@ class WP_Widget_Recent_Comments extends WP_Widget {
 		if ( ! $number = absint( $instance['number'] ) )
  			$number = 5;
 
-		$comments = get_comments( array( 'number' => $number, 'status' => 'approve' ) );
+		$comments = get_comments( array( 'number' => $number, 'status' => 'approve', 'post_status' => 'publish' ) );
 		$output .= $before_widget;
 		if ( $title )
 			$output .= $before_title . $title . $after_title;