I come from read this Using the Drupal 7 Form API states system to create conditions between form elements and I'm able to use the #states with an input element like the title (textfield element), the problem is that if I try to use a container element the #states doesn't works.

This code works:

$form['field_courriels_des_autres']['#states']['disabled']['input[name="title"]']['filled'] = TRUE;

This code doesn' works:

$form['field_preciser']['#states']['enabled']['select[name="field_salle"]']['value'] = 'other';

I think that the problem is that the field_salle is a container.

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  • It doesn't work for fieldsets (known core issue), it's probably the same for containers
    – Clive
    Commented Apr 18, 2016 at 15:27
  • @clive any clues to solve this? Commented Apr 18, 2016 at 15:28
  • 1
    IIRC, I gave up about an hour into trying the various (broken) batches available to fix it. I think I went with some custom JS in the end
    – Clive
    Commented Apr 18, 2016 at 15:30

2 Answers 2


As it's been mentioned, the #states property doesn't work for fieldsets, containers. You need some JS here, e.g:

The form

$form['promo_code_trigger'] = [
  '#type' => 'container',
  '#attributes' => ['id' => ['promo-code-add-el']],
  'data' => [
    '#markup' => t('Add promotional code'),

$form['promo_code_wrapper'] = [
  '#type' => 'container',
  '#attributes' => [
    'id' => ['promo-code-add-el-triggered'],
    'class' => ['hidden'],


$("#promo-code-add-el").on("click", function (e) {
  $('#' + e.target.id + "-triggered").toggleClass('hidden');
  $('#' + e.target.id).toggleClass('active');

States indeed doesn't work with containers yet, because containers don't have necessary wrapper classes (.js-form-item or .js-form-wrapper). However you can do a workaround to get #states API to work with containers. Here is working code example from Drupal 9:

$form['container'] = [
  '#prefix' => '<div class="js-form-wrapper">',
  '#suffix' => '</div>',
  '#type' => 'container',
  '#states' => [
    'visible' => [
      ':input[name="field_name"]' => ['value' => 'your_conditional_value_here'],

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