By admin, 31 一月, 2024
use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\Render\Element;

// Create a form element callback function to build the select element.
function custom_select_element_callback(array &$form, FormStateInterface $form_state) {
  // Define the select options.
  $options = [
    'option1' => 'Option 1',
    'option2' => 'Option 2',
    'option3' => 'Option 3',
  ];

  // Build the select element.
  $element = [
    '#type' => 'select',
    '#title' => t('Select an option'),
    '#options' => $options,
    '

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