ToolbarController.php in Helper 8

Namespace

Drupal\helper\Controller

File

src/Controller/ToolbarController.php

<?php

namespace Drupal\helper\Controller;

use Drupal\Core\Cache\Cache;
use Drupal\Core\Controller\ControllerBase;
use Symfony\Component\DependencyInjection\ContainerInterface;
use Symfony\Component\HttpFoundation\RedirectResponse;
use Symfony\Component\HttpFoundation\RequestStack;

/**
 * Toolbar controller.
 */
class ToolbarController extends ControllerBase {

  /**
   * A request stack symfony instance.
   *
   * @var \Symfony\Component\HttpFoundation\RequestStack
   */
  protected $requestStack;

  /**
   * Constructs a ToolbarController object.
   *
   * @param \Symfony\Component\HttpFoundation\RequestStack $request_stack
   *   A request stack symfony instance.
   */
  public function __construct(RequestStack $request_stack) {
    $this->requestStack = $request_stack;
  }

  /**
   * {@inheritdoc}
   */
  public static function create(ContainerInterface $container) {
    return new static($container
      ->get('request_stack'));
  }

  /**
   * Reload the previous page.
   */
  public function reloadPage() {
    $request = $this->requestStack
      ->getCurrentRequest();
    if ($request->server
      ->get('HTTP_REFERER')) {
      return $request->server
        ->get('HTTP_REFERER');
    }
    else {
      return '/';
    }
  }

  /**
   * Flush the PHP caches.
   *
   * @return \Symfony\Component\HttpFoundation\RedirectResponse
   *   Reloads the page.
   */
  public function flushPhp() {
    if (function_exists('opcache_reset')) {
      opcache_reset();
      $this
        ->messenger()
        ->addMessage($this
        ->t('PHP opcache cleared using opcache_reset().'));
    }
    if (function_exists('apc_cache_clear')) {
      apc_cache_clear();
      apc_clear_cache('user');
      apc_clear_cache('opcode');
      $this
        ->messenger()
        ->addMessage($this
        ->t('PHP APC cache cleared using apc_cache_clear().'));
    }
    clearstatcache();
    $this
      ->messenger()
      ->addMessage($this
      ->t('File status cache cleared using clearstatcache().'));
    return new RedirectResponse($this
      ->reloadPage());
  }

  /**
   * Flush the libraries (and CSS/JS) cache.
   *
   * @return \Symfony\Component\HttpFoundation\RedirectResponse
   *   Reloads the page.
   */
  public function flushLibraries() {
    Cache::invalidateTags([
      'library_info',
    ]);
    \Drupal::service('asset.css.collection_optimizer')
      ->deleteAll();
    \Drupal::service('asset.js.collection_optimizer')
      ->deleteAll();
    _drupal_flush_css_js();
    $this
      ->messenger()
      ->addMessage($this
      ->t('Libraries cache cleared.'));
    return new RedirectResponse($this
      ->reloadPage());
  }

  /**
   * Flush the bootstrap cache.
   *
   * @return \Symfony\Component\HttpFoundation\RedirectResponse
   *   Reloads the page.
   */
  public function flushBootstrap() {
    \Drupal::cache('bootstrap')
      ->deleteAll();
    $this
      ->messenger()
      ->addMessage($this
      ->t('Bootstrap cache cleared.'));
    return new RedirectResponse($this
      ->reloadPage());
  }

}

Classes

Name	Description
ToolbarController	Toolbar controller.