Bolt\Storage\Field\Type\TaxonomyType::persist PHP Метод

    public function persist(QuerySet $queries, $entity)
    {
        $field = $this->mapping['fieldname'];
        $taxonomy = $entity->getTaxonomy()->getField($field);
        // Fetch existing taxonomies
        $existingDB = $this->getExistingTaxonomies($entity) ?: [];
        $collection = $this->em->getCollectionManager()->create('Bolt\\Storage\\Entity\\Taxonomy');
        $collection->setFromDatabaseValues($existingDB);
        $toDelete = $collection->update($taxonomy);
        $repo = $this->em->getRepository('Bolt\\Storage\\Entity\\Taxonomy');
        $queries->onResult(function ($query, $result, $id) use($repo, $collection, $toDelete) {
            foreach ($collection as $entity) {
                $entity->content_id = $id;
                $repo->save($entity, $silenceEvents = true);
            }
            foreach ($toDelete as $entity) {
                $repo->delete($entity);
            }
        });
    }