From cb340f30f4c4017beb528c644374a7e372d382b9 Mon Sep 17 00:00:00 2001
From: Artem Andreev <andreev.artem@gmail.com>
Date: Sat, 18 Sep 2010 12:49:38 +0400
Subject: [PATCH] Fixed bug with first access to attendance in each course

---
 locallib.php | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/locallib.php b/locallib.php
index bcd67bd..c80b85f 100644
--- a/locallib.php
+++ b/locallib.php
@@ -435,8 +435,10 @@ function print_filter_controls($url, $id, $sort=NULL, $printselector=WITHOUT_SEL
         $group = optional_param('group', -2, PARAM_INT);
         if ($group > -2) {
             $SESSION->attsessiontype[$cm->course] = $group;
-        } elseif (!array_key_exists('attsessiontype', $SESSION)) {
-            $SESSION->attsessiontype = array();
+        } elseif (!array_key_exists($cm->course, $SESSION->attsessiontype)) {
+			if (!array_key_exists('attsessiontype', $SESSION)) {
+				$SESSION->attsessiontype = array();
+			}
             $SESSION->attsessiontype[$cm->course] = -1;
         }