added ownership

app/Traits/Owners.php

@@ -0,0 +1,18 @@
+<?php
+
+namespace App\Traits;
+
+trait Owners
+{
+    public function isOwnable()
+    {
+        $ownable = $this->ownable ?: true;
+
+        return ($ownable === true) && in_array('created_by', $this->getFillable());
+    }
+
+    public function isNotOwnable()
+    {
+        return !$this->isOwnable();
+    }
+}