public static function AntibotFormAlter::preRender in Antibot 8

Callback #pre_render: Alter forms.

File

src/AntibotFormAlter.php, line 15

Class

AntibotFormAlter

Provides a trusted callback to alter Antibot form.

Namespace

Drupal\antibot

Code

public static function preRender($build) {

  // Add the Antibot library.
  $build['#attached']['library'][] = 'antibot/antibot.form';

  // Store the form ID that the JS can replace the action path along with the
  // form key.
  $form_id = $build['#id'];
  if (isset($build['#attributes']['id'])) {
    $form_id = $build['#attributes']['id'];
  }
  $build['#attached']['drupalSettings']['antibot']['forms'][$build['#id']] = [
    'id' => $form_id,
    'key' => $build['#antibot_key'],
  ];

  // Store the action placeholder as an attribute so that it converts
  // during the building of the form. This is needed because in Drupal 8
  // the form action is a placeholder that is not added until the very
  // last moment, in order to keep the form cacheable.
  $build['#attributes']['data-action'] = $build['#action'];

  // Change the action so the submission does not go through.
  $build['#action'] = base_path() . 'antibot';

  // Add a class to the form.
  $build['#attributes']['class'][] = 'antibot';
  return $build;
}