From f186db050c079b649e3bc174d4aeb326abed4b9e Mon Sep 17 00:00:00 2001
From: Adrian Greeve <adrian@moodle.com>
Date: Fri, 18 Mar 2016 09:54:44 +0800
Subject: [PATCH] MDL-53538 mod_data: Show no records message instead of error.

When there are no records in the database module and a user
does an advanced search. Show a message that there are no entries
in the database.
---
 mod/data/lib.php | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/mod/data/lib.php b/mod/data/lib.php
index a85601cece5..88827767a6a 100644
--- a/mod/data/lib.php
+++ b/mod/data/lib.php
@@ -3654,6 +3654,11 @@ function data_get_all_recordids($dataid, $selectdata = '', $params = null) {
  * @return array $recordids   An array of record ids.
  */
 function data_get_advance_search_ids($recordids, $searcharray, $dataid) {
+    // Check to see if we have any record IDs.
+    if (empty($recordids)) {
+        // Send back an empty search.
+        return array();
+    }
     $searchcriteria = array_keys($searcharray);
     // Loop through and reduce the IDs one search criteria at a time.
     foreach ($searchcriteria as $key) {