Nextras\Orm\Mapper\Memory\RelationshipMapperManyHasMany::add PHP Метод

    public function add(IEntity $parent, array $add)
    {
        $id = $parent->getValue('id');
        $data =& $this->mapper->getRelationshipDataStorage($this->metadata->name);
        foreach ($add as $addId) {
            $data[$id][$addId] = true;
        }
    }