From d0556bd81892300b206903dd5418bbb6a60c6a1a Mon Sep 17 00:00:00 2001
From: Andrey Helldar <helldar@dragon-code.pro>
Date: Fri, 5 Sep 2025 18:07:00 +0300
Subject: [PATCH] Added `NullTransformer`

---
 config/feeds.php                     |  1 +
 src/Transformers/NullTransformer.php | 20 ++++++++++++++++++++
 2 files changed, 21 insertions(+)
 create mode 100644 src/Transformers/NullTransformer.php

diff --git a/config/feeds.php b/config/feeds.php
index b7299da..419565e 100644
--- a/config/feeds.php
+++ b/config/feeds.php
@@ -111,5 +111,6 @@
         Transformers\BoolTransformer::class,
         Transformers\DateTimeTransformer::class,
         Transformers\EnumTransformer::class,
+        // Transformers\NullTransformer::class,
     ],
 ];
diff --git a/src/Transformers/NullTransformer.php b/src/Transformers/NullTransformer.php
new file mode 100644
index 0000000..af85609
--- /dev/null
+++ b/src/Transformers/NullTransformer.php
@@ -0,0 +1,20 @@
+<?php
+
+declare(strict_types=1);
+
+namespace DragonCode\LaravelFeed\Transformers;
+
+use DragonCode\LaravelFeed\Contracts\Transformer;
+
+class NullTransformer implements Transformer
+{
+    public function allow(mixed $value): bool
+    {
+        return $value === null;
+    }
+
+    public function transform(mixed $value): string
+    {
+        return 'null';
+    }
+}