From 5b61b76076b71bd09b6d801d9e4682d8824f381c Mon Sep 17 00:00:00 2001
From: Thomas Gelf <thomas@gelf.net>
Date: Mon, 2 Nov 2020 09:14:27 +0100
Subject: [PATCH] ExtensibleSetElement: failsafe rendering

---
 .../Web/Form/IplElement/ExtensibleSetElement.php | 16 ++++++++++++++--
 1 file changed, 14 insertions(+), 2 deletions(-)

diff --git a/library/Director/Web/Form/IplElement/ExtensibleSetElement.php b/library/Director/Web/Form/IplElement/ExtensibleSetElement.php
index 7f1ffeaf..a4dbb207 100644
--- a/library/Director/Web/Form/IplElement/ExtensibleSetElement.php
+++ b/library/Director/Web/Form/IplElement/ExtensibleSetElement.php
@@ -305,17 +305,29 @@ class ExtensibleSetElement extends BaseHtmlElement
         if ($this->inheritedFrom === null) {
             return \sprintf(
                 $this->translate('%s (inherited)'),
-                \implode(', ', $this->inherited)
+                $this->stringifyInheritedValue()
             );
         } else {
             return \sprintf(
                 $this->translate('%s (inherited from %s)'),
-                \implode(', ', $this->inherited),
+                $this->stringifyInheritedValue(),
                 $this->inheritedFrom
             );
         }
     }
 
+    private function stringifyInheritedValue()
+    {
+        if (\is_array($this->inherited)) {
+            return \implode(', ', $this->inherited);
+        } else {
+            return \sprintf(
+                $this->translate('%s (not an Array!)'),
+                \var_export($this->inherited, 1)
+            );
+        }
+    }
+
     private function createAddNewButton()
     {
         return $this->newInlineButtons(