问题描述
我实际上正在对api进行一些功能测试，并且遇到了一个我不太了解的问题.
I'm actually doing some functionnal testing on my api and I'm facing a problem which I don't really understand.
我想测试与远程Web托管服务器交互的API.目标是管理VirtualHosts，DNS区域，数据库等.我有一个测试远程服务器，为避免冲突，我在测试后删除了创建的内容(在TearDown()函数中)并创建了基础(在setUp()函数中).在setUp()中，我还在安装程序中加载了夹具.
I want to test an API which interact with a remote web hosting server. The goal is to manage VirtualHosts, DNS zones, database etc...I have a test remote server and to avoid conflicts, I remove the created stuff after the test (in the TearDown() function) and create the base (in the setUp() function). In the setUp() I also load fixtures in the setup.
在添加了我的主要实体的子代的测试之后，我想清理远程服务器:
After a test which add a child of my main entity, I want to clean the remote server :
$service = $this->fixtures->getReference('service-web');
$this->container->get('webmanager')->deleteHosting($service, true);
deleteHosting()函数将删除所有远程内容(真正的参数是"force"参数，以确保该函数不会在发生错误后停止.
The deleteHosting() function deletes all remote stuff (the true parameter is the "force" parameter, which ensure that the function doesn't stop after an error.
$service变量包含我的主要服务实体.在这个实体中，我还与addonDomain的实体存在一对多关系.我的功能测试创建了一个addonDomain.测试还可以，但是当我尝试删除我的服务时，附加的实体使Doctrine大喊大叫:Doctrine\ORM\ORMInvalidArgumentException: Detached entity AppBundle\Entity\Service\Web\AddonDomain@0000000054814da900000000073c524a cannot be removed.
The $service variable contains my main service entity. I also have in this entity a One-To-Many relationship with addonDomain's entity.My functionnal test creates an addonDomain.The test is OK, but when I try to delete my service, the attached entity makes Doctrine yell as hell : Doctrine\ORM\ORMInvalidArgumentException: Detached entity AppBundle\Entity\Service\Web\AddonDomain@0000000054814da900000000073c524a cannot be removed.
我尝试了很多事情，但都无济于事(即:使用学说管理器来检索实体，而不是使用固定装置.
I tried a lot of things but none of them works (ie : using the doctrine manager to retrieve the entity instead of using the fixture.
非常感谢您的帮助，最好的问候.
Thanks a lot for your help,best regards.
已解决！实际上，我使用的是测试类的容器和实体管理器，而不是客户本人的实体管理器.那是问题所在...
SOLVED !In fact, I'm using the container and the entity manager of the test class and not of the client himself. That was the problem...
推荐答案
尽管这是一个老问题，但最近在使用Symfony 4.4和帮助我解决了这一问题.基本上，就像@Can Vural建议的那样，在删除之前调用 merge 可以解决问题，但是缺少的一点是您必须再次分配实体，这样:
Although this is an old question, I had the same problem recently while working with Symfony 4.4 and Detached entity error in Doctrine helped me solve the problem. Basically, as @Can Vural suggested, calling merge before remove is solving the problem, but the missing bit is that you have to assign the entity again so:
$entity = $doctrineManager->merge($detachedEntity);
$doctrineManager->remove($entity);
$doctrineManager->flush();
这解决了我的问题.
请记住，merge已过时，将在《教义3》中删除: https://github.com/doctrine/orm/blob/master/UPGRADE.md#bc-break-removed-entitymanagermergemerge-and-entitymanagerdetach-methods
Please keep in mind that merge is deprecated and will be removed in Doctrine 3: https://github.com/doctrine/orm/blob/master/UPGRADE.md#bc-break-removed-entitymanagermerge-and-entitymanagerdetach-methods
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