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1. 新增操作

// 原则，所有服务类只有一个public入口,或者多个public入口，但是他们做都是同一件事情
Class CreateService {// 创建类的入口, 根据dto去新建public function create(Dto $dto){// 先构建model对象, 不要在事务期间构建，减少事务等待$good = $this->buildGood($designProduct, $dto);$good->setRelation('aList', $this->buildAList($dto));$good->setRelation('bList', $this->buildBList($dto));DB::transaction(function () use ($good) {// 保存model对象// 主表$good->save();// 主表关联其他表$good->aList()->saveMany($designReference->aList->all());// 主表关联其他表$good->bList()->saveMany($designReference->bList->all());// 触发事件,要delay延迟事件，确保事务提交后触发delay_event(new GoodCreated());});}// 根据product类去新建public function createByProduct(Product $product) {// build reference// save()}/*** @param Dto $dto* @return Collection*/protected function buildAList(Dto $dto): Collection {$newCollection  = new Collection();$$list = array_filter_unique(explode(',', $dto->getName()));if (empty($list)) {return $newCollection;}foreach ($list as $name) {$newCollection->add(new GoodAList(['name'    => $name,]));}return $newCollection;}protected function buildBList(Dto $dto): Collection {$newCollection  = new Collection();if (!empty($dto->getBName())) {$newCollection->add(new GoodBList(['country_name'    => $dto->getBName(),]));}return $newCollection;}/*** @param Product $product* @param Dto $dto* @return Good*/protected function buildGood(Product $product,Dto $dto): Good {return new Good(['updated_at'   => $dto->getDataUpdatedAt(),'band_id'   => $product->band_id,]);}}$service = new CreateService();
$service->create();