如何在 Doctrine2 CTI 继承中更改和实体类型

问题描述

您如何(如果可能的话)使用 Doctrine2 更改实体类型，使用它的类表继承?

How (if possible at all) do you change the entity type with Doctrine2, using it's Class Table Inheritance?

假设我有一个 Person 父类类型和两个继承类型 Employe 和 Client.我的系统允许创建一个人员并指定它的类型 - 这很容易实现 - 但我也希望能够将人员从员工更改为客户，同时维护 Person-级别信息(即 id 和其他相关记录).

Let's say I have a Person parent class type and two inherited types Employe and Client. My system allows to create a Person and specify it's type - that's fairly easy to implement - but I'd also like to be able to change the person from an Employe to a Client, while maintaining the Person-level information (it's id and other associated records).

Doctrine2 有没有一种简单的方法可以做到这一点?

Is there a simple way to do this with Doctrine2?

推荐答案

我昨天也在寻找这种行为.

I was looking for this behaviour yesterday also.

最后，在与 freenode 上#doctrine 的人交谈后，我被告知这是不可能的.

In the end, after speaking with people in #doctrine on freenode, I was told that it is not possible.

如果你想这样做，那么你必须经历这个:

If you want to do this, then you have to go through this:

1. 抓取 Person 实体.
2. 更新鉴别器列，使其不再是人"并将其更改为员工"
3. 在您的 Employee 表中为此继承创建相应的行.

1. Grab the Person Entity.
2. Update the discrimator column so that it is no longer a 'person' and change it to 'employee'
3. Create a corresponding row inyour Employee table for this inheritance.

删除继承

同样，如果你想删除继承，你必须......

Removing Inheritance

Likewise if you want to remove inheritance, you have to..

1. 抓取 Person 实体.
2. 更新鉴别器列，使其不再是雇员"并将其更改为人".
3. 删除Employee 表中的相应行.(是的，您必须删除它，仅更改鉴别器参数是不够的).

1. Grab the Person Entity.
2. Update the discrimnator column so that it is no longer an 'employee' and change it to a 'person'.
3. Delete the corresponding row in your Employee table. (Yes you have to delete it, just change the discrimator coumn is not sufficient).

这可能晚了 7 个月，但对于任何其他希望支持此类功能的事物来说，这至少是正确的答案.

This might be 7 months late, but it is at least the correct answer for anything else looking to suport such a feature.

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