SU-HKKU/cardinal_service_profile

<?php

/**
 * @file
 * cardinal_service_blocks.module
 */

use Drupal\Core\Form\FormStateInterface;

/**
 * Implements hook_form_FORM_ID_alter().
 */
function cardinal_service_blocks_form_layout_builder_configure_block_alter(&$form, FormStateInterface $form_state, $form_id) {
  /** @var \Drupal\layout_builder\SectionComponent $component */
  $component = $form_state->getFormObject()->getCurrentComponent();

  // We only want to modify views exposed filters.
  if (strpos($component->get('configuration')['id'], 'views_exposed_filter_block') !== 0) {
    return;
  }

  $form['settings']['views_action_url'] = [
    '#type' => 'textfield',
    '#title' => t('Form action URL'),
    '#description' => t('Leave empty to submit the form to the page it is displayed on'),
    '#default_value' => $component->getThirdPartySetting('cardinal_service_blocks', 'action_url'),
  ];
  array_unshift($form['#submit'], '_cardinal_service_blocks_block_form_submit');
}

/**
 * Views exposed form block configure submit handler.
 *
 * @param array $form
 *   Complete form.
 * @param \Drupal\Core\Form\FormStateInterface $form_state
 *   Current form state.
 */
function _cardinal_service_blocks_block_form_submit(array &$form, FormStateInterface $form_state) {
  /** @var \Drupal\layout_builder\SectionComponent $section_component */
  $section_component = $form_state->getFormObject()->getCurrentComponent();
  // Clear the settings first.
  $section_component->unsetThirdPartySetting('cardinal_service_blocks', 'action_url');

  // If a url is provided, store those settings.
  if ($url = $form_state->getValue(['settings', 'views_action_url'])) {
    $section_component->setThirdPartySetting('cardinal_service_blocks', 'action_url', $url);
  }
}

/**
 * Implements hook_preprocess_HOOK().
 */
function cardinal_service_blocks_preprocess_block(&$variables) {
  // For exposed filter blocks, set the action of the form to the desired url.
  if ($variables['base_plugin_id'] == 'views_exposed_filter_block' && !empty($variables['configuration']['action_url'])) {
    $variables['content']['#action'] = $variables['configuration']['action_url'];
  }
}