added tip #349

Author: OussamaMater

README.md

@@ -9,7 +9,7 @@ Daily Laravel/PHP tips I share on my [X](https://x.com/OussamaMater) and [Linked
 
 Currently, there are over 300 tips categorized as follows:
 
-- 🗄️ [Eloquent & Database Tips](./tips/eloquent-and-database.md) (97 tips)
+- 🗄️ [Eloquent & Database Tips](./tips/eloquent-and-database.md) (98 tips)
 - 🛠️ [Helpers Tips](./tips/helpers.md) (65 tips)
 - 🧪 [Testing Tips](./tips/testing.md) (29 tips)
 - 💻 [Artisan & Console Command Tips](./tips/console.md) (26 tips)

tips/eloquent-and-database.md

@@ -97,6 +97,7 @@
 - [Restore Trashed Models](#laravel-tip--restore-trashed-models-️)
 - [Bootable Traits](#laravel-tip--bootable-traits-️)
 - [Boot Traits with Attributes](#laravel-tip--boot-traits-with-attributes-️)
+- [The New "whereAttachedTo" Method](#laravel-tip--the-new-whereattachedto-method-️)
 
 ## Laravel Tip 💡: Get Original Attributes ([⬆️](#eloquent--database-tips-cd-))
 
@@ -1981,3 +1982,21 @@ trait HasToken
     }
 }
 ```
+
+## Laravel Tip 💡: The New "whereAttachedTo" Method ([⬆️](#eloquent--database-tips-cd-))
+
+We have all used "whereHas", and sometimes you need to constrain it to match specific models. Since Laravel v12.13, you can use "whereAttachedTo" for exactly that 🚀
+
+```php
+<?php
+
+$tags = Tag::where('created_at', '>', now()->subMonth())->get();
+
+// instead of this 🥱
+Post::whereHas('tags', function (Builder $query) use ($tags) {
+    $query->whereKey($tags);
+})->get();
+
+// You can do this 🔥
+Post::whereAttachedTo($tags)->get();
+```