Add Notification Token

app/Models/User.php

@@ -84,4 +84,9 @@ class User extends Authenticatable
     {
         return $this->hasMany(Person::class, 'owner_user_id');
     }
+
+    public function notificationTokens()
+    {
+        return $this->morphMany(NotificationToken::class, 'notifiabletoken');
+    }
 }