From 05ac1cd8bda7076053b7d518e47cd78cb7b569e5 Mon Sep 17 00:00:00 2001
From: Matthias Schmidt <gravatronics@live.com>
Date: Sun, 12 May 2019 18:26:49 +0200
Subject: [PATCH] Ignore invalid values passed to `ShowOrderFormField::value()`

See #2509
---
 .../system/form/builder/field/ShowOrderFormField.class.php    | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/wcfsetup/install/files/lib/system/form/builder/field/ShowOrderFormField.class.php b/wcfsetup/install/files/lib/system/form/builder/field/ShowOrderFormField.class.php
index 1bf964eeb9..703212bcf1 100644
--- a/wcfsetup/install/files/lib/system/form/builder/field/ShowOrderFormField.class.php
+++ b/wcfsetup/install/files/lib/system/form/builder/field/ShowOrderFormField.class.php
@@ -99,7 +99,9 @@ class ShowOrderFormField extends SingleSelectionFormField {
 		}
 		
 		if (count($keys) <= $value) {
-			throw new \InvalidArgumentException("Unknown value '{$value}' as only " . count($keys) . " values are available.");
+			// outdated `showOrder` values might cause errors; simply ignore those
+			// outdated values
+			return $this;
 		}
 		
 		return parent::value($keys[$value]);
-- 
2.20.1