Dynamic Options for a Select in a Structured field throws Error: Illegal offset type in isset or empty

The CMS Questions
1

I have got a kunden.yml file with a structure that has informations about shops.

title: Kunden
tabs:
  structure:
    label: Kunden
    fields:          
      Kunden:
        label: Kunden
        type: structure
        sortable: true
        fields:
          Logo:
            type: files
            required: true
          Firma: 
            label: Firma
            type: text
            required: true

I would like to use those shop names in a select box in another structure examples.yml:

title: Arbeitsbeispiele Übersicht

tabs:
  structure:
    label: Arbeitsbeispiele
    fields:          
      Beispiele:
        label: Arbeitsbeispiele
        type: structure
        sortable: true
        fields:
          files:
            type: files
            required: true
          Firma: 
            label: Firma
            type: select
              options:
                type: query
                query: page("kunden").kunden.toStructure
                text: "{{ item.firma }}"
                value: "{{ item.firma }}"
            required: true
          Datum:
            label: Datum
            type: date
            display: DD.MM.YYYY
            calendar: true

collection kunden.php

<?php
    return function () {
        return page('Kunden')->Kunden()->toStructure();
    }
?>

I tried a lot of things

  • pages.get(“shops”).kunden.toStructure
  • kirby.collection(“shops”)
  • page(“shops”).kunden.toStructure

The colletion isself works.

But the select always shows “Illegal offset type in isset or empty”:
Can anybody help me to solve this?

2

the indentation look off here, options should be under type

3

thank you very much!