doctrine remove entity with association

Question

Hello I am working with Symfony2 and Doctrine and I can not make a thing.

I have a product entity and another entity provider:

Product * ----------- 1 provider

If I delete a provider and could leave all bone products supplier null foreign key.

result 
products provider:
    product1 (id,name,desc,id_provider=null)
    product2 (id,name,desc,id_provider=null)
    product3 (id,name,desc,id_provider=null)

I've looked cascade remove but what it does is remove products and is not what I want.

greetings and thanks.

Answer 1

在控制器中的删除操作中，为提供程序获取所有已加入的产品，并将其键设置为null。

Answer 2

您应该在JoinColumn中使用onDelete: SET NULL而不是onDelete: CASCADE 。