在Symfony 2 / Doctrine 2中有一个与实体无关的自定义存储库？ [英] Having a custom repository not associated to an entity in Symfony 2 / Doctrine 2?

问题描述

可能有一个与Symfony 2和Doctrine 2中的实体不相关联的自定义存储库？我想把一些不适合其他存储库的本地SQL（它可以引用抽象或实体层次结构）放在一起。

控制器代码如何 $ this-> getDoctrine（） - > getRepositoty（/ * ??? * /）应该被替换

解决方案

可能有你想要的那么多的存储库。但是，只有一个存储库可以与实体管理器链接。

您需要定义一些服务来添加自定义存储库。

 <！ - 我的自定义存储库 - > 
< service id =acme.repository.my_entityclass =Acme\FQCN\MyEntityRepository> 
< argument type =serviceid =doctrine.orm.entity_manager/> 
< argument type =serviceid =acme.metadata.my_entity/> 
< / service> 
 
<！ -  MyEntity metadata  - > 
< service id =acme.metadata.my_entityclass =Doctrine\ORM\Mapping\ClassMetaData> 
< argument> Acme\FQCN\MyEntity< / argument> 
< / service> 
  

存储库类必须从 EntityRepository 。

 命名空间Acme\FQCN; 
 
使用Doctrine\ORM\EntityRepository; 
 
 class MyEntityRepository扩展EntityRepository 
 {
 / ** 
 *如果要注入任何自定义依赖关系，您必须要
 *将它们添加到构造或创建设置器。我建议使用setter 
 *，在这种情况下，您不需要使用此类中的构造函数。 
 * 
 * public function __construct（$ em，Doctrine\ORM\Mapping\ClassMetadata $ class，$ custom_dependency）
 * {
 * parent :: __ construct（$ em，$ class）; 
 *} 
 * 
 * / 
} 
  

不幸的是，您将无法通过教义服务检索它。相反，直接从容器中检索：

  $ this-> get（'acme.repository.my_entity'）; 
  

---

编辑 p>

如果您正在创建不应链接到任何实体的存储库，只需创建一个服务并注入必要的依赖关系。

 <！ - 其他查询的存储库 - > 
< service id =acme.repository.miscclass =Acme\FQCN\MiscRepsitory> 
< argument type =serviceid =database_connection/> 
< / service> 
  

由于您没有在自定义存储库中使用任何Doctrine的ORM功能，因此无需扩展 EntityManager 。

 命名空间Acme\FQCN; 
 
使用\Doctrine\DBAL\Connection; 
 
 class MiscRepository 
 {
 protected $ conn; 
 
 public function __construct（Connection $ conn）
 {
 $ this-> conn = $ conn; 
} 
} 
  

Would be possible to have a custom repository not associated with an entity in Symfony 2 and Doctrine 2? I would like to put in it some native SQL that doesn't fit well in other repositories (it may refer to abstract or entity hierarchy).

How controller code $this->getDoctrine()->getRepositoty(/* ??? */) should be replaced?

解决方案

It's possible to have as many repositories as you wish. However, only a single repository can be linked with the entity manager.

You need to define a few services to add a custom repository.

<!-- My custom repository -->
<service id="acme.repository.my_entity" class="Acme\FQCN\MyEntityRepository" >
    <argument type="service" id="doctrine.orm.entity_manager" />
    <argument type="service" id="acme.metadata.my_entity" />
</service>

<!-- MyEntity metadata -->
<service id="acme.metadata.my_entity" class="Doctrine\ORM\Mapping\ClassMetaData">
    <argument>Acme\FQCN\MyEntity</argument>
</service>

The repository class would have to inherit from EntityRepository.

namespace Acme\FQCN;

use Doctrine\ORM\EntityRepository;

class MyEntityRepository extends EntityRepository
{
    /** 
     * If you want to inject any custom dependencies, you'd have either have to
     * add them to the construct or create setters. I'd suggest using setters
     * in which case you wouldn't need to use the constructor in this class.
     *
     * public function __construct($em, Doctrine\ORM\Mapping\ClassMetadata $class, $custom_dependency)
     * {
     *     parent::__construct($em, $class);
     * }
     *
     */
}

Unfortunately you'll not be able to retrieve it via the doctrine service. Instead, retrieve it straight from the container:

$this->get('acme.repository.my_entity');

---

EDIT

If you're creating a repository that shouldn't be linked to any entities, simply create a service and inject the necessary dependencies.

<!-- Repository for misc queries -->
<service id="acme.repository.misc" class="Acme\FQCN\MiscRepsitory">
    <argument type="service" id="database_connection" />
</service>

Since you're not using any of the Doctrine's ORM features in a custom repository, there's no need to extend EntityManager.

namespace Acme\FQCN;

use \Doctrine\DBAL\Connection;

class MiscRepository
{
    protected $conn;

    public function __construct(Connection $conn)
    {
        $this->conn = $conn;
    }
}

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