function comment_entity_predelete

Implements hook_entity_predelete().

File

core/modules/comment/comment.module, line 400

Code

function comment_entity_predelete(EntityInterface $entity) {
    // Entities can have non-numeric IDs, but {comment} and
    // {comment_entity_statistics} tables have integer columns for entity ID, and
    // PostgreSQL throws exceptions if you attempt query conditions with
    // mismatched types. So, we need to verify that the ID is numeric (even for an
    // entity type that has an integer ID, $entity->id() might be a string
    // containing a number), and then cast it to an integer when querying.
    if ($entity instanceof FieldableEntityInterface && is_numeric($entity->id())) {
        $entity_query = \Drupal::entityQuery('comment');
        $entity_query->condition('entity_id', (int) $entity->id());
        $entity_query->condition('entity_type', $entity->getEntityTypeId());
        $cids = $entity_query->execute();
        $comment_storage = \Drupal::entityTypeManager()->getStorage('comment');
        $comments = $comment_storage->loadMultiple($cids);
        $comment_storage->delete($comments);
        \Drupal::service('comment.statistics')->delete($entity);
    }
}