From 7685016d202dca78b3390d05bd4d389cde7c9cc1 Mon Sep 17 00:00:00 2001
From: skodak <skodak>
Date: Thu, 1 Jan 2009 22:43:20 +0000
Subject: [PATCH] MDL-16262 fixed resetting of single simple discussions;
 backported from HEAD

---
 mod/forum/lib.php | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/mod/forum/lib.php b/mod/forum/lib.php
index 98b087cc9ee..b189c404c1f 100644
--- a/mod/forum/lib.php
+++ b/mod/forum/lib.php
@@ -6443,11 +6443,12 @@ function forum_reset_userdata($data) {
         // remove ratings
         delete_records_select('forum_ratings', "post IN ($postssql)");
 
-        // all posts
-        delete_records_select('forum_posts', "discussion IN ($discussionssql)");
+        // all posts - initial posts must be kept in single simple discussion forums
+        delete_records_select('forum_posts', "discussion IN ($discussionssql) AND parent <> 0"); // first all children
+        delete_records_select('forum_posts', "discussion IN ($discussionssql AND f.type <> 'single') AND parent = 0"); // now the initial posts for non single simple
 
-        // finally all discussions
-        delete_records_select('forum_discussions', "forum IN ($forumssql)");
+        // finally all discussions except single simple forums
+        delete_records_select('forum_discussions', "forum IN ($forumssql AND f.type <> 'single')");
 
         // now get rid of all attachments
         if ($forums = get_records_sql($forumssql)) {