From f3ba6e799620995809613265906f28072ee52cbe Mon Sep 17 00:00:00 2001
From: Simon Lamon <32477463+silamon@users.noreply.github.com>
Date: Sat, 30 Mar 2024 14:44:59 +0100
Subject: [PATCH] Fix uncaught keyFunction errors when data table filtering
 (#20285)

* Undefined keys

* Apply suggestion

Co-authored-by: Bram Kragten <mail@bramkragten.nl>

* Prettier

---------

Co-authored-by: Bram Kragten <mail@bramkragten.nl>
---
 src/components/data-table/ha-data-table.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/components/data-table/ha-data-table.ts b/src/components/data-table/ha-data-table.ts
index cf442f525f..fbd6d97281 100644
--- a/src/components/data-table/ha-data-table.ts
+++ b/src/components/data-table/ha-data-table.ts
@@ -386,7 +386,7 @@ export class HaDataTable extends LitElement {
     `;
   }
 
-  private _keyFunction = (row: DataTableRowData) => row[this.id] || row;
+  private _keyFunction = (row: DataTableRowData) => row?.[this.id] || row;
 
   private _renderRow = (row: DataTableRowData, index: number) => {
     // not sure how this happens...