searchindex_wipe-8.x-1.7/searchindex_wipe.module

<?php

/**
 * @file
 * Enables wipe of search index.
 */

use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\Url;
use Drupal\Core\Routing\RouteMatchInterface;

/**
 * Implements hook_form_FORM_ID_alter().
 */
function searchindex_wipe_form_search_admin_settings_alter(&$form, FormStateInterface $form_state) {
  if (\Drupal::currentUser()->hasPermission('wipe search index')) {
    $form['status']['clear_index'] = array(
      '#value' => t('Wipe Index'),
      '#type' => 'submit',
      '#submit' => array('searchindex_wipe_all'),
      '#description' => t('Drops all the index build by search module'),
    );
  }
}

/**
 * Redirect to confirmation link.
 */
function searchindex_wipe_all(&$form, FormStateInterface $form_state) {
  $url = new Url('searchindex_wipe.reindex_confirm');
  $form_state->setRedirectUrl($url);
}

/**
 * Helper function to truncate search related tables.
 */
function searchindex_wipe_truncate_table() {
  // Taken code from drupal_uninstall_schema.
  $schema = drupal_get_module_schema('search');
  foreach ($schema as $table_name => $table) {
    // Truncate search related tables.
    \Drupal::database()->truncate($table_name)->execute();
  }
  \Drupal::messenger()->addMessage(t('Search Index Cleared, Please rebuilt the index by running cron.'));
}

/**
 * Implements hook_help().
 */
function searchindex_wipe_help($route_name, RouteMatchInterface $route_match) {
  switch ($route_name) {

    case 'help.page.searchindex_wipe':
      $output = '';
      $output .= '<h3>' . t('About') . '</h3>';
      $output .= '<p>' . t('AThis module clean up search index built by search module.') . '</p>';
      $output .= '<p>' . t('It is helpful while deploying large sites whose search index becomes massive.') . '</p>';
      $output .= '<p>' . t('TThe reindex button does not clear the search index but rather gradually replaces existing search data with new data as items are reindexed.') . '</p>';

            // Add a link to the Drupal.org project.
      $output .= '<p>';
      $output .= t('Visit the <a href=":project_link">Search Index Wipe project page</a> on Drupal.org for more information.',[
        ':project_link' => 'https://www.drupal.org/project/searchindex_wipe'
        ]);
      $output .= '</p>';

      return $output;

    default:
  }
}