Cannot modify subdivision options in a form alter as documentation states that you can.

I am struggling to make this work. It seems the #options for administrative_area doesn't exist because I keep getting error "Warning: Undefined array key "#options" ". It seems like limiting the list (US states in my case) for an address field on a node should be simple but can't figure out what I am doing wrong.

Relevant snipped from node_form_alter function in my .module file:

$form['field_address'][0]['address']['administrative_area']['#pre_render'][] = '\Drupal\mycustommodule\MyTrustedCallbackClass::preRender';

And from MyTrustedCallbackClass.php:

<?php

namespace Drupal\mycustommodule;

use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\Security\TrustedCallbackInterface;

class MyTrustedCallbackClass implements TrustedCallbackInterface {

  /**
   * {@inheritdoc}
   */
  public static function trustedCallbacks() {
    return ['preRender'];
  }

  /**
   * Callback to limit options.
   */
  public static function preRender($element) {
    $include_states = ['NY', 'CA'];
    $options = array_intersect_key($element['#options'], array_flip($include_states));
    $element['#options'] = $options;
    return $element;
  }
}
?>

It took me quite a while but I did get this working. There is an odd issue in that the State and Zip code fields now show on separate lines of the edit form. I'd prefer that didn't happen but now that this is functional I'm happy enough to move on.

Example of working code for .module file:

function mycustommodule_node_form_alter(&$form, FormStateInterface $form_state, $form_id) {
  if ($form_id == 'your_form_id') {
    $form['field_address']['widget'][0]['address']['#pre_render'][] = [
      MyTrustedCallbackClass::class, 'myMethod',
    ];
  }
}

And for the MyTrustedCallbackClass.php:

namespace Drupal\mycustommodule;

use Drupal\Core\Security\TrustedCallbackInterface;

class MyTrustedCallbackClass implements TrustedCallbackInterface {

  public static function trustedCallbacks() {
    return ['myMethod'];
  }

  public static function myMethod($element) {
    $include_states = ['NY', 'CA'];
    $options = array_intersect_key($element['administrative_area']['#options'], array_flip($include_states));
    $element['administrative_area']['#options'] = $options;
    return $element;
  }
}

In retrospect it wasn't all that difficult but as someone who is still getting up to speed with most of my experience being a Drupal 7 site builder and not a programmer sometimes I get tripped up easily.

Hi tdwhite,

I've been able to modify the subdivisions this way but the part I'm missing is the translated labels coming from the json files (ex. AE.json)

It's the local_code which is the translated label that I cannot override. Any ideas on how to use a custom json for these?

{
"country_code": "AE",
"locale": "ar",
"subdivisions": {
"Abu Dhabi": {
"local_code": "أبو ظبي",
"iso_code": "AE-AZ"
},
"Sharjah": {
"local_code": "إمارة الشارقةّ",
"local_name": "الشارقة",
"iso_code": "AE-SH"
},
"Fujairah": {
"local_code": "الفجيرة",
"iso_code": "AE-FU"
},
"Umm Al Quwain": {
"local_code": "ام القيوين",
"iso_code": "AE-UQ"
},
"Dubai": {
"local_code": "إمارة دبيّ",
"local_name": "دبي",
"iso_code": "AE-DU"
},
"Ras al Khaimah": {
"local_code": "إمارة رأس الخيمة",
"local_name": "رأس الخيمة",
"iso_code": "AE-RK"
},
"Ajman": {
"local_code": "عجمان",
"iso_code": "AE-AJ"
}
}
}

Note that Address 2.0.0 has fixed ✨ Subdivision event subscriber doesn't receive a list of subdivisions already set for a country Fixed , which means that the best way to modify subdivisions (and their translations) is using the SubdivisionEvent, the same one documented here.

Of course #3 works, though I generally prefer #after_build for all address element modifications, as documented here or shown here 💬 There is not possible to set a description for form elements of address (fields of address) Fixed .

Automatically closed - issue fixed for 2 weeks with no activity.