FeedItemsDeleteForm.php in Drupal 9        
                          
                  
                        
  
  
  
  
File
  core/modules/aggregator/src/Form/FeedItemsDeleteForm.php
  
    View source  
  <?php
namespace Drupal\aggregator\Form;
use Drupal\Core\Entity\ContentEntityConfirmFormBase;
use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\Url;
class FeedItemsDeleteForm extends ContentEntityConfirmFormBase {
  
  public function getQuestion() {
    return $this
      ->t('Are you sure you want to delete all items from the feed %feed?', [
      '%feed' => $this->entity
        ->label(),
    ]);
  }
  
  public function getCancelUrl() {
    return new Url('aggregator.admin_overview');
  }
  
  public function getConfirmText() {
    return $this
      ->t('Delete items');
  }
  
  public function submitForm(array &$form, FormStateInterface $form_state) {
    $this->entity
      ->deleteItems();
    $form_state
      ->setRedirectUrl($this
      ->getCancelUrl());
  }
}