plan wip

app/Models/Konto.php

@@ -42,6 +42,6 @@ class Konto extends Model
 
     public function plan(): HasOne
     {
-        return $this->hasOne(Plan::class);
+        return $this->hasOne(Plan::class, 'id', 'plan_id');
     }
 }

app/Models/Plan.php

@@ -6,5 +6,17 @@ use Illuminate\Database\Eloquent\Model;
 
 class Plan extends Model
 {
-    //
+    /**
+     * The attributes that are mass assignable.
+     *
+     * @var list<string>
+     */
+    protected $fillable = [
+        'name',
+        'payment',
+        'description',
+        'preis',
+        'number_user',
+        'number_gutachter',
+    ];
 }