From 5836bac7a48524999961a1ec85c0bba165deb560 Mon Sep 17 00:00:00 2001
From: mjollnir_ <mjollnir_>
Date: Mon, 13 Oct 2008 10:12:05 +0000
Subject: [PATCH] MDL-16587: portfolio/caller base class - be more defensive
 when asked to do things with files

---
 lib/portfolio/caller.php | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/lib/portfolio/caller.php b/lib/portfolio/caller.php
index cf945be907..86f0dd3b2e 100644
--- a/lib/portfolio/caller.php
+++ b/lib/portfolio/caller.php
@@ -293,6 +293,9 @@ abstract class portfolio_caller_base {
     * for single or multi file exports.
     */
     public function prepare_package_file() {
+        if (empty($this->singlefile) && empty($this->multifiles)) {
+            throw new portfolio_caller_exception('invalidpreparepackagefile', 'portfolio', $this->get_return_url());
+        }
         if ($this->singlefile) {
             return $this->exporter->copy_existing_file($this->singlefile);
         }
-- 
2.39.5