问题
I'd like to create an upload form for documents. It's possible to select several so called 'agencies' and each of these agencies belongs to one specific market. What I want to do is, set the markets automatically. So in my controller I had something like this:
$document->setMarket($document->getAgencies()->getMarket());
But since the agencies are an ArrayCollection, I can't call a getter on them. So I was thinking about a for each loop in order to get the markets for every single agency. Would that work and if yes how would I do it best and most efficiently?
Would be happy about tips and tricks :D
来源：https://stackoverflow.com/questions/45963672/symfony-use-setter-for-arraycollection-in-createcontroller