From 82f85ba30f16ec6cfb8abb86a94af08f84fdf825 Mon Sep 17 00:00:00 2001
From: brettp <brettp@36083f99-b078-4883-b0ff-0f9b5a30f544>
Date: Mon, 29 Jun 2009 21:18:52 +0000
Subject: Closes #502: Removing unfriended users from access lists upon
 unfriending.

git-svn-id: https://code.elgg.org/elgg/trunk@3362 36083f99-b078-4883-b0ff-0f9b5a30f544
---
 engine/lib/users.php | 21 ++++++++++++++++++++-
 1 file changed, 20 insertions(+), 1 deletion(-)

(limited to 'engine/lib/users.php')

diff --git a/engine/lib/users.php b/engine/lib/users.php
index b271d4b4f..5f562845c 100644
--- a/engine/lib/users.php
+++ b/engine/lib/users.php
@@ -557,9 +557,28 @@
 	 * @return true|false Depending on success
 	 */
 	function user_remove_friend($user_guid, $friend_guid) {
+		global $CONFIG;
+		
 		$user_guid = (int) $user_guid; 
 		$friend_guid = (int) $friend_guid;
-		return remove_entity_relationship($user_guid, "friend", $friend_guid);
+		if (!remove_entity_relationship($user_guid, "friend", $friend_guid)){
+			return false;
+		}
+		
+		// perform cleanup for access lists.
+		$collections = get_user_access_collections($user_guid);
+		$in_arr = array();
+		foreach ($collections as $collection) {
+			$in_arr[] = $collection->id;
+		}
+		$query = "DELETE FROM `{$CONFIG->dbprefix}access_collection_membership`
+			WHERE `user_guid` = '$friend_guid'
+			AND `access_collection_id` IN(" . implode($in_arr, ',') . ")";
+		delete_data($query);
+		
+		// delete_data() might return nothing if no rows were affected.
+		// the users has been removed already, so we safely return true.
+		return true;
 	}
 	
 	/**
-- 
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