feat(attachments): add HasAttachments trait to manage attachment relationships

app/Domains/Attachable/Models/Concerns/HasAttachments.php

@@ -0,0 +1,18 @@
+<?php
+
+namespace App\Domains\Attachable\Models\Concerns;
+
+use App\Domains\Attachable\Models\Attachment;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\MorphMany;
+
+trait HasAttachments
+{
+    /**
+     * @return MorphMany<Attachment, Model>
+     */
+    public function attachments(): MorphMany
+    {
+        return $this->morphMany(Attachment::class, 'attachable');
+    }
+}

tests/Feature/Attachable/AttachmentTest.php

@@ -20,9 +20,7 @@ class AttachmentTest extends TestCase
             'dominio' => 'acme.com',
         ]);
 
-        $attachment = Attachment::query()->create([
+        $attachment = $tenant->attachments()->create([
-            'attachable_type' => $tenant->getMorphClass(),
-            'attachable_id' => $tenant->getKey(),
             'path' => 'attachments/acme/logo.png',
             'filename' => 'logo.png',
             'type' => AttachmentType::Image,
@@ -32,14 +30,18 @@ class AttachmentTest extends TestCase
         ]);
 
         $this->assertSame(AttachmentType::Image, $attachment->type);
+        $this->assertTrue($tenant->attachments->contains($attachment));
         $this->assertDatabaseHas('attachments', [
             'id' => $attachment->id,
+            'attachable_type' => $tenant->getMorphClass(),
+            'attachable_id' => $tenant->getKey(),
             'type' => AttachmentType::Image->value,
         ]);
 
         $freshAttachment = Attachment::query()->findOrFail($attachment->id);
 
         $this->assertSame(AttachmentType::Image, $freshAttachment->type);
+        $this->assertTrue($freshAttachment->attachable->is($tenant));
     }
 
     public function test_it_requires_attachment_type(): void