konto optionen

app/Models/KontoOption.php

@@ -0,0 +1,14 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\HasOne;
+
+class KontoOption extends Model
+{
+    public function payment_plan(): HasOne
+    {
+        return $this->hasOne(PaymentPlan::class, 'id', 'payment_plan_id');
+    }
+}