From 86a63d6210d57bca998d59865ad1237df9e275fa Mon Sep 17 00:00:00 2001
From: Julio Montoya <gugli100@gmail.com>
Date: Thu, 11 Aug 2011 15:22:41 +0200
Subject: [PATCH] Use cache when generating graphics

---
 main/inc/lib/tracking.lib.php | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/main/inc/lib/tracking.lib.php b/main/inc/lib/tracking.lib.php
index 5304a30d96..469d2e60df 100755
--- a/main/inc/lib/tracking.lib.php
+++ b/main/inc/lib/tracking.lib.php
@@ -2647,8 +2647,8 @@ class Tracking {
 			// $main_graph = new pChart($main_width,$main_height);
 
 			$graph_id = 'generate_session_exercise_graph'.Security::remove_XSS($_GET['course']).'-'.intval($_GET['session_id']).'-'.api_get_user_id();
-			//if ($cache->IsInCache($graph_id, $data_set->GetData())) {
-			if (0) {
+			if ($cache->IsInCache($graph_id, $data_set->GetData())) {
+			//if (0) {
 				//if we already created the img
 				//echo 'in cache';
 				$img_file = $cache->GetHash($graph_id,$data_set->GetData());