Loading entity, set relation depth?

Question

Is it somehow possible to set a loading level for related entities? An example of related entities:

Voucher
- has a Product
    - has a ProductGroup

A call like this

$voucher->getProduct()->getProductGroup(),

causes multiple SQL queries by calling getProduct() and getProductGroup(). I know it is possible to load everything with a big join in querybuilder, but I am looking for a kind of configuration how deep the entities should be loaded by join or proxyobjects. I dont know for what I should search in google. :(

Answer 1

我认为您正在寻找的是： http : //docs.doctrine-project.org/projects/doctrine-orm/en/latest/tutorials/extra-lazy-associations.html