From b467ee7539bd530e68a47d315ca890c6a417f05c Mon Sep 17 00:00:00 2001
From: moodler <moodler>
Date: Fri, 12 Sep 2008 07:33:49 +0000
Subject: [PATCH] MDL-16474  Modifications to allow definition of 1-point
 scales

---
 grade/edit/scale/edit_form.php | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/grade/edit/scale/edit_form.php b/grade/edit/scale/edit_form.php
index 79902ed178..a54b81682f 100644
--- a/grade/edit/scale/edit_form.php
+++ b/grade/edit/scale/edit_form.php
@@ -141,9 +141,13 @@ class edit_scale_form extends moodleform {
                 }
             }
 
-            $options = explode(',', $data['scale']);
-            if (count($options) < 2) {
+            if (empty($data['scale'])) {
                 $errors['scale'] = get_string('error');
+            } else {
+                $options = explode(',', $data['scale']);
+                if (count($options) < 1) {   // single-item scales are allowed, see MDL-16474
+                    $errors['scale'] = get_string('error');
+                }
             }
         }
 
-- 
2.39.5