From ab391cddf0aaa968e2aaa13083405dafe026d2fb Mon Sep 17 00:00:00 2001
From: Eric Merrill <merrill@oakland.edu>
Date: Thu, 18 Dec 2014 16:17:52 -0500
Subject: [PATCH] MDL-48655 gradebook: Don't treat a scale with a gradepass of
 0 as passed

---
 lib/grade/grade_grade.php | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/lib/grade/grade_grade.php b/lib/grade/grade_grade.php
index e9c6ce4366a..7b08b9360cb 100644
--- a/lib/grade/grade_grade.php
+++ b/lib/grade/grade_grade.php
@@ -818,8 +818,12 @@ class grade_grade extends grade_object {
             return null;
         }
 
-        // Return null if gradepass == grademin or gradepass is null
-        if (is_null($this->grade_item->gradepass) || $this->grade_item->gradepass == $this->grade_item->grademin) {
+        // Return null if gradepass == grademin, gradepass is null, or grade item is a scale and gradepass is 0.
+        if (is_null($this->grade_item->gradepass)) {
+            return null;
+        } else if ($this->grade_item->gradepass == $this->grade_item->grademin) {
+            return null;
+        } else if ($this->grade_item->gradetype == GRADE_TYPE_SCALE && !grade_floats_different($this->grade_item->gradepass, 0.0)) {
             return null;
         }