From d31cdc0ee9a1ab05048ee36cb4be48deb828d92b Mon Sep 17 00:00:00 2001
From: gustav_delius <gustav_delius>
Date: Mon, 30 Aug 2004 20:54:42 +0000
Subject: [PATCH] isteacher() with no arguments now does the expected

---
 lib/moodlelib.php | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/lib/moodlelib.php b/lib/moodlelib.php
index 1435243f54a..4c05e41b052 100644
--- a/lib/moodlelib.php
+++ b/lib/moodlelib.php
@@ -538,7 +538,13 @@ function isteacher($courseid=0, $userid=0, $includeadmin=true) {
     }
 
     if (!$userid) {
-        return !empty($USER->teacher[$courseid]);
+        if ($courseid) {
+            return !empty($USER->teacher[$courseid]);
+        }
+        if (!isset($USER->id)) {
+            return false;
+        }
+        $userid = $USER->id;
     }
 
     if (!$courseid) {