XPreviewController.php in BUEditor 8.2

Namespace

Drupal\bueditor\Controller

File

src/Controller/XPreviewController.php

<?php

namespace Drupal\bueditor\Controller;

use Symfony\Component\HttpFoundation\JsonResponse;
use Symfony\Component\HttpFoundation\Request;
use Drupal\Core\Controller\ControllerBase;

/**
 * Controller class for ajax preview path.
 */
class XPreviewController extends ControllerBase {

  /**
   * Handles ajax preview requests.
   */
  public function response(Request $request) {
    $user = $this
      ->currentUser();

    // Check security token for authenticated users.
    if (!$user
      ->isAnonymous()) {
      $token = $request->query
        ->get('token');
      if (!$token || !\Drupal::csrfToken()
        ->validate($token, 'xpreview')) {
        return new JsonResponse([
          'output' => $this
            ->t('Invalid security token.'),
          'status' => FALSE,
        ]);
      }
    }

    // Build output
    $data = [
      'output' => '',
      'status' => TRUE,
    ];

    // Check input
    $input = $request->request
      ->get('input');
    if (is_string($input) && ($input = trim($input)) !== '') {
      $used_format = filter_fallback_format();

      // Check format
      $format = $request->request
        ->get('format');
      if ($format && is_string($format) && $format !== $used_format) {
        if ($format = \Drupal::entityTypeManager()
          ->getStorage('filter_format')
          ->load($format)) {
          if ($format
            ->access('use', $user)) {
            $used_format = $format
              ->id();
          }
        }
      }
      $data['usedFormat'] = $used_format;
      $build = [
        '#type' => 'processed_text',
        '#text' => $input,
        '#format' => $used_format,
      ];
      $data['output'] = '' . \Drupal::service('renderer')
        ->renderPlain($build);
    }
    return new JsonResponse($data);
  }

}

Classes

Name	Description
XPreviewController	Controller class for ajax preview path.