主义：扩展实体类 [英] Doctrine: extending entity class

问题描述

我想扩展Entity\Base类，在Doctrine 2.1中怎么做？我的研究表明，每当有人遇到这样的问题，他会切换到Doctrine 1.2：）n我使用yaml配置

解决方案

教义2.X实体作为POPO（普通老PHP对象）。
为了实现正确扩展，Doctrine强制您使用名为Mapped Super Classes的JPA的概念。
这个想法很简单。每当你想有一个基类，并希望你的实体从它扩展（我不是在DB级别继承），所有你需要做的是创建你的Base类作为MappedSuperClass。

这是一个例子： http://www.doctrine-project.org/docs/orm/2.1/en/reference/inheritance-mapping.html#mapped-superclasses

I would like to extend Entity\Base classes, how to do this in Doctrine 2.1? My research showed that whenever someone encounters the problem with doing this he switches to Doctrine 1.2 :)n I am using yaml configuration

解决方案

Doctrine 2.X Entities work as POPOs (Plain Old PHP Objects). To achieve extending correctly, Doctrine enforces you to use a concept from JPA called Mapped Super Classes. The idea is pretty simple. Whenever you want to have a base class and want your entities to extend from it (I'm not talking about inheritance at DB level), all you need to do is create your Base class as a MappedSuperClass.

Here is an example: http://www.doctrine-project.org/docs/orm/2.1/en/reference/inheritance-mapping.html#mapped-superclasses

Thanks

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