From 725c80c0ebed4d95a883a9f1095504822348b7bc Mon Sep 17 00:00:00 2001
From: Tigrov <rrr-r@ya.ru>
Date: Thu, 7 May 2026 20:13:58 +0700
Subject: [PATCH 1/2] Remove check for empty name in `markPropertyChanged()`

---
 src/AbstractActiveRecord.php |  2 +-
 tests/ActiveRecordTest.php   | 10 ++++++++++
 2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/src/AbstractActiveRecord.php b/src/AbstractActiveRecord.php
index 985f8d90c..511e629cd 100644
--- a/src/AbstractActiveRecord.php
+++ b/src/AbstractActiveRecord.php
@@ -391,7 +391,7 @@ public function link(string $relationName, ActiveRecordInterface $linkModel, arr
 
     public function markPropertyChanged(string $name): void
     {
-        if ($this->oldValues !== null && $name !== '') {
+        if ($this->oldValues !== null) {
             unset($this->oldValues[$name]);
         }
     }
diff --git a/tests/ActiveRecordTest.php b/tests/ActiveRecordTest.php
index b53f3844a..830da688b 100644
--- a/tests/ActiveRecordTest.php
+++ b/tests/ActiveRecordTest.php
@@ -1634,6 +1634,16 @@ public function testMarkPropertyChanged(): void
         $this->assertSame($expectedAffectedRows, $affectedRows);
     }
 
+    public function testMarkPropertyChangedWithEmptyName()
+    {
+        $model = new NullValues();
+        $model->assignOldValues(['' => 'empty name', 'name' => 'Vasya']);
+
+        $model->markPropertyChanged('');
+
+        $this->assertSame(['name' => 'Vasya'], $model->oldValues());
+    }
+
     public function testMarkAsNew(): void
     {
         $this->reloadFixtureAfterTest();

From f5e7951dfd72e03f86bb154110924b40af6738d2 Mon Sep 17 00:00:00 2001
From: Tigrov <rrr-r@ya.ru>
Date: Wed, 13 May 2026 14:12:22 +0700
Subject: [PATCH 2/2] Add line to CHANGELOG.md [skip ci]

---
 CHANGELOG.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 036d4bc04..a3ea2779f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,6 +10,7 @@
 - Bug #561: Fix `ActiveRecordInterface::upsert()` with `$updateProperties = false` (@Tigrov)
 - Bug #550: Relation query should be created by related class, not primary model class (@batyrmastyr)
 - Enh #571: Optimize performance of `ActiveRecord::get()` method (@Tigrov)
+- Enh #575: Remove check for empty string in `AbstractActiveRecord::markPropertyChanged()` method (@Tigrov)
 
 ## 1.0.2 March 11, 2026