From 37e0c6e7f20eacf9a5b91d0fdaee4b43f8971ebf Mon Sep 17 00:00:00 2001
From: brandonkelly <brandon@pixelandtonic.com>
Date: Wed, 27 Dec 2023 07:45:30 -0800
Subject: [PATCH] Make `relatedTo*` reserved field handles

Resolves #14075
---
 CHANGELOG.md       | 1 +
 src/base/Field.php | 5 +++++
 2 files changed, 6 insertions(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index ce69061f729..ee368fdb4a1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,7 @@
 
 ## Unreleased
 
+- `relatedToAssets`, `relatedToCategories`, `relatedToEntries`, `relatedToTags`, and `relatedToUsers` are now reserved user field handles. ([#14075](https://github.com/craftcms/cms/issues/14075))
 - `craft\services\Security::$sensitiveKeywords` is no longer case-sensitive. ([#14064](https://github.com/craftcms/cms/discussions/14064))
 - Fixed a bug where the `index-assets/cleanup` command accepted `--cache-remote-images`, `--create-missing-assets`, and `--delete-missing-assets` options, even though they didn’t do anything.
 - Fixed a bug where automatically-created relations could be lost when a new site was added to an entry. ([#14065](https://github.com/craftcms/cms/issues/14065))
diff --git a/src/base/Field.php b/src/base/Field.php
index ec08654694d..5871bd182a4 100644
--- a/src/base/Field.php
+++ b/src/base/Field.php
@@ -331,6 +331,11 @@ protected function defineRules(): array
                 'propagateAll',
                 'propagating',
                 'ref',
+                'relatedToAssets',
+                'relatedToCategories',
+                'relatedToEntries',
+                'relatedToTags',
+                'relatedToUsers',
                 'resaving',
                 'revisionId',
                 'rgt',