Support grouping for checkboxes and radio buttons

Issue is still present. @AkshayAdhav you probably did not test with a patch for 2269823, e.g. https://www.drupal.org/files/issues/2023-08-29/core-checkbox-groups-10.1... → .

To properly test it, you'll have to create your own FieldWidget that extends OptionsButtonsWidget, for example:

namespace Drupal\my_example_module\Plugin\Field\FieldWidget;

use Drupal\Core\Entity\FieldableEntityInterface;
use Drupal\Core\Field\Plugin\Field\FieldWidget\OptionsButtonsWidget;

/**
 * Plugin implementation of the 'options_buttons' widget.
 *
 * @FieldWidget(
 *   id = "example_options_buttons",
 *   label = @Translation("Check boxes/radio buttons - With Groups"),
 *   field_types = {
 *     "boolean",
 *     "entity_reference",
 *     "list_integer",
 *     "list_float",
 *     "list_string",
 *   },
 *   multiple_values = TRUE
 * )
 */
class ExampleOptionsButtonsWidget extends OptionsButtonsWidget
{
    protected function getOptions(FieldableEntityInterface $entity)
    {
        return [
            'Top level label 1' => [
                1 => 'Option one',
                2 => 'Option two',
            ],
            'Top level label 2' => [
                3 => 'Option three',
                4 => 'Option four',
            ],
        ];
    }
}

Select the "Check boxes/radio buttons - With Groups" widget in the form display configuration. Trying it without a patch for 2269823 results in an error. With a patch, you'll see the behaviour displayed in the original issue description.

Closing this again as it required a core patch to be applied. Once merged we can reopen it.

The same issue is happening when enabling grouped checkboxes → module.
The input tag is hidden by css.

Closing as duplicate of 🐛 Clientside validation breaks checkbox toggle Active

Can you check if the solution there will fix your issue as well?

Yes 🐛 Clientside validation breaks checkbox toggle Active is solving the issue for grouped checkboxes →