我正在尝试使用EntityManager扩展Doctrine中的EntityManagerDecorator，并遇到了对通过EntityManager传递给UnitOfWork事件的prePersist中的基本$eventArgs的引用的问题。
创建EntityManager时，似乎UnitOfWork被传递到EntityManager::__construct中的UnitOfWork。
我以为解决方案可能是我可以覆盖UnitOfWork中的默认MyEntityManagerDecorator::getUnitOfWork()，例如:
public function getUnitOfWork()
{
if ($this->unitOfWork === null) {
$this->unitOfWork = new UnitOfWork($this);
}
return $this->unitOfWork;
}
但是我注意到
UnitOfWork::__construct()需要EntityManager而不是EntityManagerInterface，所以这行不通。我正在寻找如何从prePersist
MyEntityManagerDecorator而不是基础$eventArgs->getEntityManager()获取EntityManager的方法。我想这样做而不直接继承EntityManager的。文档还说:“您永远不要尝试从EntityManager继承:继承不是EntityManager的有效扩展点。”。我不确定您对代码示例的要求(如果有)，因此，如果您需要更多信息，请告诉我。我可以按预期在项目中的其他任何地方访问
MyEntityManagerDecorator(到目前为止，我已经尝试过了)。我在yml中设置装饰器，如下所示:my_multi_tenant_entity_manager:
public: false
class: My\MultiTenantBundle\ORM\MyEntityManagerDecorator
decorates: doctrine.orm.default_entity_manager
arguments: [ "@my_multi_tenant_entity_manager.inner" ]
这是我正在使用的从 Composer 转储的软件包和版本号的列表:
installed:
doctrine/annotations v1.2.3 Docblock Annotations Parser
doctrine/cache v1.4.0 Caching library offering...
doctrine/collections v1.2 Collections Abstraction ...
doctrine/common v2.4.2 Common Library for Doctr...
doctrine/dbal v2.5.1 Database Abstraction Layer
doctrine/doctrine-bundle v1.3.0 Symfony DoctrineBundle
doctrine/doctrine-cache-bundle v1.0.1 Symfony2 Bundle for Doct...
doctrine/doctrine-migrations-bundle dev-master 6a1bd73 Symfony DoctrineMigratio...
doctrine/inflector v1.0.1 Common String Manipulati...
doctrine/instantiator 1.0.4 A small, lightweight uti...
doctrine/lexer v1.0.1 Base library for a lexer...
doctrine/migrations dev-master 058a463 Database Schema migratio...
doctrine/orm v2.4.7 Object-Relational-Mapper...
incenteev/composer-parameter-handler v2.1.0 Composer script handling...
jdorn/sql-formatter v1.2.17 a PHP SQL highlighting l...
kriswallsmith/assetic v1.2.1 Asset Management for PHP
monolog/monolog 1.12.0 Sends your logs to files...
phpdocumentor/reflection-docblock 2.0.4
phpspec/prophecy v1.3.1 Highly opinionated mocki...
phpunit/php-code-coverage 2.0.15 Library that provides co...
phpunit/php-file-iterator 1.3.4 FilterIterator implement...
phpunit/php-text-template 1.2.0 Simple template engine.
phpunit/php-timer 1.0.5 Utility class for timing
phpunit/php-token-stream 1.4.0 Wrapper around PHP's tok...
phpunit/phpunit 4.5.0 The PHP Unit Testing fra...
phpunit/phpunit-mock-objects 2.3.0 Mock Object library for ...
psr/log 1.0.0 Common interface for log...
raven/raven dev-master 407d770 A PHP client for Sentry ...
sebastian/comparator 1.1.1 Provides the functionali...
sebastian/diff 1.2.0 Diff implementation
sebastian/environment 1.2.1 Provides functionality t...
sebastian/exporter 1.2.0 Provides the functionali...
sebastian/global-state 1.0.0 Snapshotting of global s...
sebastian/recursion-context 1.0.0 Provides functionality t...
sebastian/version 1.0.4 Library that helps with ...
sensio/distribution-bundle v3.0.16 Base bundle for Symfony ...
sensio/framework-extra-bundle v3.0.4 This bundle provides a w...
sensio/generator-bundle v2.5.2 This bundle generates co...
sensiolabs/security-checker v2.0.1 A security checker for y...
swiftmailer/swiftmailer v5.3.1 Swiftmailer, free featur...
symfony/assetic-bundle v2.6.1 Integrates Assetic into ...
symfony/monolog-bundle v2.7.1 Symfony MonologBundle
symfony/swiftmailer-bundle v2.3.8 Symfony SwiftmailerBundle
symfony/symfony v2.6.4 The Symfony PHP framework
twig/extensions v1.2.0 Common additional featur...
twig/twig v1.18.0 Twig, the flexible, fast...
最佳答案
我建议装饰(而不是直接扩展)EntityManager，因为它会松散实现与继承的组件之间的耦合。
为了能够区分与租户确实有关系的实体，请从interface或mapped superclass实现/扩展这些类。
这里有securityContext(用于演示目的)以获取对租户的引用。
/**
* `EntityManagerDecorator` exists since v2.4
*/
class MultiTenantEntityManager extends EntityManagerDecorator {
private $securityContext;
public function __construct(EntityManagerInterface $entityManager, $securityContext) {
parent::__construct($entityManager);
$this->securityContext = $securityContext;
}
public function persist($entity) {
// set the tenant before persisting an entity
if ($entity instanceof MultiTenantEntity) {
$userId = $this->securityContext->getUserId();
$tenant = $this->wrapped->find($userId,...);
$entity->setTenant($tenant);
}
return $this->wrapped->persist($entity);
}
}
关于php - 使用EntityManagerDecorator扩展Doctrine EntityManager会在UnitOfWork中留下错误的引用，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/28771483/