如何在 Symfony2 项目中配置扩展 PersistentObject 的 Doctrine2 实体?

2022-01-03 00:00:00 php symfony doctrine-orm

我希望能够使用这里描述的 PersistentObject http://www.doctrine-project.org/blog/a-doctrine-orm-odm-base-class.html 在 Symfony2 项目开发期间，避免创建和删除 getter 和在数据库和实体设计不断变化的同时，setter 无休止地进行.

I would like to be able to use the PersistentObject described here http://www.doctrine-project.org/blog/a-doctrine-orm-odm-base-class.html during development of a Symfony2 project, to avoid creating and deleting getters and setters endlessly whilst the database and entity design are in flux.

如简要文档(下面的代码引用)中所建议的那样，在 Symfony2 项目中的何处配置"ObjectManager?它应该在控制器中吗?如果是，它会是什么样子?

Where in a Symfony2 project does one 'configure' the ObjectManager, as suggested in the brief documentation (code quote below)? Should it be in the controller, and if so, what would it look like?

 $entityManager = EntityManager::create(...);
 PersistentObject::setObjectManager($entityManager);

我找不到任何工作示例(尽管我确实在 stackoverflow 上找到了 Zend2 框架的类似示例:在 Zend 框架中使用来自 Doctrine 的 PersistentObject

I cannot find any working examples (although I did find this parallels example for the Zend2 framework on stackoverflow: Using PersistentObject from Doctrine in Zend Framework

感谢您的时间！

推荐答案

PersistentObject 是一个不需要手动持久化的对象.因此，它使用 php 的 __call() 方法提供了神奇的 getter 和 setter.

The PersistentObject is an object which you don't manually have to persist. It thereby provides magic getters and setters using php's __call() method.

您只需在实体类中扩展对象并在控制器中使用它.无需生成 getter 和 setter.

You simply extend the Object in your entity class and use it inside your controller. without the need to generate getters and setters.

示例实体

<?php
namespace VendorYourBundleYourEntity;

use DoctrineCommonPersistencePersistentObject; 
use DoctrineCommonPersistenceObjectManager;
use DoctrineORMMapping as ORM;

class YourEntity extends PersistentObject
{

   // i added the constructor in order to save the setObjectManager() 
   // call in the the controller

   public function __construct(ObjectManager $om)
   {
       $this->setObjectManager($om);
   }

   /** 
    * @ORMId  
    * @ORMColumn(type="integer")
    * @ORMGeneratedValue(strategy="AUTO")
    */
   protected $id;

   /**
    * @ORMColumn(type="string", length=100)
    */
   protected $name;

   // ... more properties

}

示例控制器操作

class YourController extends Controller
{
    public function yourAction($name)
    {
        $em = $this->get('doctrine')->getManager('default');

        $entity = new YourEntity($em);   // __construct calls setObjectManager($em)

        $entity->setName($name);         // magic setter is used here

        // ... no need for $em->persist($entity);

        $em->flush();                    // $entity is being persisted.
    }

    // ...

您可以使用 ...

 $em = $this->get('doctrine')->getManager();          // gets default manager
 $em = $this->get('doctrine')->getManager('default'); // same as above
 $em = $this->getDoctrine()->getManager();            // using alias

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