Construct design.design from data class

app/DataProviders/DesignBlocks.php

@@ -0,0 +1,24 @@
+<?php
+
+/**
+* Invoice Ninja (https://invoiceninja.com).
+*
+* @link https://github.com/invoiceninja/invoiceninja source repository
+*
+* @copyright Copyright (c) 2022. Invoice Ninja LLC (https://invoiceninja.com)
+*
+* @license https://www.elastic.co/licensing/elastic-license
+*/
+
+namespace App\DataProviders;
+
+class DesignBlocks
+{
+    public function __construct(
+        public string $includes = '',
+        public string $header = '',
+        public string $body = '',
+        public string $footer = ''
+    ) {
+    }
+}

app/Factory/DesignFactory.php

@@ -11,6 +11,7 @@
 
 namespace App\Factory;
 
+use App\DataProviders\DesignBlocks;
 use App\Models\Design;
 
 class DesignFactory
@@ -24,7 +25,7 @@ class DesignFactory
         $design->is_active = true;
         $design->is_custom = true;
         $design->name = '';
-        $design->design = [];
+        $design->design = new DesignBlocks();
 
         return $design;
     }