1 files changed, 15 insertions, 0 deletions
diff --git a/modules/comment/comment.module b/modules/comment/comment.module
index ead3cc906..88794bd5d 100644
--- a/modules/comment/comment.module
+++ b/modules/comment/comment.module
@@ -1970,3 +1970,18 @@ function comment_unpublish_by_keyword_action($comment, $context) {
     }
   }
 }
+
+/**
+ * Implementation of hook_ranking().
+ */
+function comment_ranking() {
+  return array(
+    'comments' => array(
+      'title' => t('Number of comments'),
+      'join' => 'LEFT JOIN {node_comment_statistics} node_comment_statistics ON node_comment_statistics.nid = i.sid',
+      // Inverse law that maps the highest reply count on the site to 1 and 0 to 0.
+      'score' => '2.0 - 2.0 / (1.0 + node_comment_statistics.comment_count * %f)',
+      'arguments' => array(variable_get('node_cron_comments_scale', 0)),
+    ),
+  );
+}