-1

I would like to set the file description as required. I tried it with this code:

function mymodule_form_alter(&$form, \Drupal\Core\Form\FormStateInterface $form_state, $form_id) {

  if ($form_id == 'node_news_homepage_edit_form') {

    $form['field_downloads']['widget'][0]['description_field']['#required'] = TRUE;
  }
}

But it didn't work. Could anyone help me?

  • This seems to be the right approach, see drupal.stackexchange.com/questions/216829/…, but the key description_field looks odd to me, did you check it exists in $form? Should be description, if it is named after the File field property and this is the field type the question is about. – 4k4 Oct 1 '18 at 12:08
1

The community is working to solve this problem: https://www.drupal.org/project/drupal/issues/2320877

While this isn't the part of the Drupal core, you can do the following:

function mymodule_form_alter(&$form, \Drupal\Core\Form\FormStateInterface $form_state, $form_id) {
  if ($form_id == 'node_news_homepage_edit_form') {
    $form['field_downloads']['widget'][0]['#process'][] = 'set_file_description_required';
  }
}

function set_file_description_required($element) {
    $element['description']['#required'] = TRUE;
    return $element;
}
  • Thanks for the code. Unfortunately the description field is just required after I saved the page. And if I have two downloads it just works for the first one. But I will wait for the patch. Hope it would be soon available on drupal core. – Zeroplexer Oct 1 '18 at 14:21
  • It only works for the edit form because it checks for the edit_form id. I answered with a version that will work for any form and multivalued fields. – Marc Jul 4 at 20:03
0

Based on @DavidCzinege answer, a version that works for any form where the field appears and also for multivalued fields:

use Drupal\Core\Render\Element;

/**
 * Implements hook_form_alter().
 */
function my_module_form_alter(&$form, &$form_state, $form_id) {

  if (!empty($form['field_file']['widget'])) {

    foreach (Element::children($form['field_file']['widget']) as $el_index) {

      $form['field_file']['widget'][$el_index]['#process'][] = 'my_module_set_file_description_required';

  }

}

function my_module_set_file_description_required($element) {

  $element['description']['#required'] = TRUE;
  return $element;

};

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