BlockContentRouteProvider.php

<?php

declare (strict_types=1);
namespace Drupal\block_content\Routing;

use Drupal\Core\Entity\EntityTypeInterface;
use Drupal\Core\Entity\Routing\AdminHtmlRouteProvider;

/**
 * Provides HTML routes for block_content entities.
 */
class BlockContentRouteProvider extends AdminHtmlRouteProvider {
  
  /**
   * {@inheritdoc}
   */
  public function getRoutes(EntityTypeInterface $entity_type) {
    $routes = parent::getRoutes($entity_type);
    // Rename the entity.block_content.add_page route to keep BC.
    // @todo remove this and use an alias instead when https://www.drupal.org/project/drupal/issues/3506653 is done.
    $addPageRoute = $routes->get('entity.block_content.add_page');
    $routes->remove('entity.block_content.add_page');
    $routes->add('block_content.add_page', $addPageRoute);
    return $routes;
  }
  
  /**
   * {@inheritdoc}
   */
  protected function getCanonicalRoute(EntityTypeInterface $entity_type) {
    return self::getEditFormRoute($entity_type);
  }
  
  /**
   * {@inheritdoc}
   */
  protected function getEditFormRoute(EntityTypeInterface $entity_type) {
    return parent::getEditFormRoute($entity_type)->addRequirements([
      '_block_content_reusable' => 'TRUE',
    ]);
  }
  
  /**
   * {@inheritdoc}
   */
  protected function getDeleteFormRoute(EntityTypeInterface $entity_type) {
    return parent::getDeleteFormRoute($entity_type)->addRequirements([
      '_block_content_reusable' => 'TRUE',
    ]);
  }

}