From ef51ea50a1420fc54896c1588e242e08d96b2121 Mon Sep 17 00:00:00 2001
From: Simon Stier <52674635+simontaurus@users.noreply.github.com>
Date: Sat, 8 Mar 2025 05:06:27 +0100
Subject: [PATCH] fix: trim '-' from property labels before calling
 DIProperty::newFromUserLabel

Refs: #920
---
 formats/datatables/SearchPanes.php | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/formats/datatables/SearchPanes.php b/formats/datatables/SearchPanes.php
index 9c8b47c85..e6089b58d 100644
--- a/formats/datatables/SearchPanes.php
+++ b/formats/datatables/SearchPanes.php
@@ -126,7 +126,8 @@ private function getPanesOptions(
 
 		$qobj = $querySegmentList[$rootid];
 
-		$property = new DIProperty( DIProperty::newFromUserLabel( $printRequest->getCanonicalLabel() ) );
+		// lookup the property by the provided label, trim leading '-' to handle inverse properties
+		$property = new DIProperty( DIProperty::newFromUserLabel( ltrim( $printRequest->getCanonicalLabel(), '-' ) ) );
 		$propTypeid = $property->findPropertyValueType();
 
 		if ( $isCategory ) {