From 327c88b76bf9c7047c718e2f194b88dbd8a58e9c Mon Sep 17 00:00:00 2001
From: "Eloy Lafuente (stronk7)" <stronk7@moodle.org>
Date: Sat, 9 Jul 2011 19:51:37 +0200
Subject: [PATCH] MDL-28156 restore - support restoring files without grade
 items

---
 backup/moodle2/restore_stepslib.php | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/backup/moodle2/restore_stepslib.php b/backup/moodle2/restore_stepslib.php
index 6f41077f0d9..905190a6528 100644
--- a/backup/moodle2/restore_stepslib.php
+++ b/backup/moodle2/restore_stepslib.php
@@ -312,6 +312,8 @@ class restore_gradebook_structure_step extends restore_structure_step {
 
         // We need to update the calculations for calculated grade items that may reference old
         // grade item ids using ##gi\d+##.
+        // $mappings can be empty, use 0 if so (won't match ever)
+        $mappings = !empty($mappings) ? $mappings : array(0);
         list($sql, $params) = $DB->get_in_or_equal(array_values($mappings), SQL_PARAMS_NAMED);
         $sql = "SELECT gi.id, gi.calculation
                   FROM {grade_items} gi