Nested structure fields collection

Kirby 3 Solved ✅
1

Hey,

I have a select box on another page that I want to query the items in a structure field as well as it’s nested structure field entries, but am having trouble.

Fields to query:

categories:
  label: Categories
  type: structure
  fields:
    name:
      label: Category name
      type: text
    subcategories: 
      label: Sub-Categories
      type: structure
      fields:
        name: 
          label: Sub-Category Name
          type: text

Query

  category:
    label: Category
    type: select
    options: query
    query:
      fetch: kirby.collection('categories')
      text: {{ stuctureItem.name }}
      value: {{ stuctureItem.name }}

Is a collection the right way to go about this? If so what would it look like?

Thank you!

2

Yes, something like that should work depending on what your collection returns. Could you post your collection, please?

The alternative would be a route that return the necessary data as JSON.

3

Hi @texnixe,

I’ve managed to get create an array from the data, but it’s looking like I need an object — how would I go about this?

<?php 

return function ( $pages ) {
  
  $categories = $pages->find('git')->categories()->toStructure();
  $collection = [];
  $collection['categories'] = [];

  foreach ( $categories as $category ) {
    // Add categories to array
    $collection['categories'][] = array (
      'name' => (string)$category->name(),
      'description' => (string)$category->description(),
      'parent' => $category->subcategoryToggle()->toBool(),
      'child' => false,
      'children' => $category->subcategories()->value()
    );

    // Add Subcategories to array
    $subcats = $category->subcategories()->toStructure();
    foreach ( $subcats as $subcat ) {
      $collection['categories'][] = array(
        'name' => (string)$subcat->name(),
        'description' => (string)$subcat->description()->kt(),
        'parent' => false,
        'child' => true
      );
    }
  }

  return $collection;
};
4

After much testing and fiddling, this seems to work!!

collections/categories.php

<?php 

return function ( $site, $kirby, $pages ) {
  
  // Create categories and subcategories collections
  $categories = $pages->find('git')->categories()->toStructure();
  $all_cats = new Collection;

  // Iterate through all subcategories and add to Subcat_coll
  foreach ( $categories as $category ) {
    
    // Exclude top-level Categories
    if ( $category->subcategoryToggle()->toBool() == false ) {
      $all_cats->append( $all_cats->count(), $category );
    }

    // Append subcategories if they exist
    $subcats = $category->subcategories()->toStructure();
    foreach ( $subcats as $subcat ) {
      $all_cats->append( $all_cats->count(), $subcat );
    }
  }

  return $all_cats;
};

Query

...
            options: query
            query:
              fetch: kirby.collection("categories")
              text: "{{ structureItem.name }}"
              value: "{{ structureItem.name }}"

:raised_hands: