From 0537422543c96cb484b143ccb64c62f7ec1c86c6 Mon Sep 17 00:00:00 2001
From: Matthew Hailwood <matthew@webfox.co.nz>
Date: Thu, 5 Oct 2023 11:29:01 +1300
Subject: [PATCH] Update README.md

---
 README.md | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/README.md b/README.md
index 1415775..e13a6f2 100644
--- a/README.md
+++ b/README.md
@@ -318,6 +318,21 @@ VolumeUnitEnum::MILLIGRAMS->isNotAny(['GRAMS', VolumeUnitEnum::TONNE]);
 VolumeUnitEnum::MILLIGRAMS->isNotAny([VolumeUnitEnum::GRAMS, VolumeUnitEnum::MILLIGRAMS]); // false
 ```
 
+### rule
+
+The backed enums may be validated using Laravel's standard Enum validation rule - `new Illuminate\Validation\Rules\Enum(VolumeUnitEnum::class)`.  
+This method a shortcut for the validation rule.
+
+#### Usage
+```
+public function rules(): array
+{
+    return [
+        'volume_unit' => [VolumeUnitEnum::rule()],
+    ];
+}
+```
+
 ## Changelog
 
 Please see [CHANGELOG](CHANGELOG.md) for more information on what has changed recently.