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

    public function persist(QuerySet $queries, $entity)
    {
        $this->normalize($entity);
        $key = $this->mapping['fieldname'];
        $accessor = 'get' . ucfirst($key);
        $proposed = $entity->{$accessor}();
        $collection = new RepeatingFieldCollection($this->em, $this->mapping);
        $existingFields = $this->getExistingFields($entity) ?: [];
        foreach ($existingFields as $group => $ids) {
            $collection->addFromReferences($ids, $group);
        }
        $toDelete = $collection->update($proposed);
        $repo = $this->em->getRepository('Bolt\\Storage\\Entity\\FieldValue');
        $queries->onResult(function ($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);
            }
        });
    }