From 62d70e07bc1f1ed5b7cbfcc75aa735ebc56736ee Mon Sep 17 00:00:00 2001
From: Damyon Wiese <damyon.wiese@netspot.com.au>
Date: Fri, 16 Nov 2012 11:00:05 +0800
Subject: [PATCH] MDL-36655: Assignment - do not add empty group to grading
 form when there is only one student

---
 mod/assign/locallib.php | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/mod/assign/locallib.php b/mod/assign/locallib.php
index 1e2488648d3..3d4484773da 100644
--- a/mod/assign/locallib.php
+++ b/mod/assign/locallib.php
@@ -3050,7 +3050,9 @@ class assign {
         if (!$last){
             $buttonarray[] = $mform->createElement('submit', 'nosaveandnext', get_string('nosavebutnext', 'assign'));
         }
-        $mform->addGroup($buttonarray, 'navar', '', array(' '), false);
+        if (!empty($buttonarray)) {
+            $mform->addGroup($buttonarray, 'navar', '', array(' '), false);
+        }
     }