Symfony2中的設計模式:EventDispatcher是Mediator或Event Aggregator嗎? [英]Design pattern in Symfony2: is EventDispatcher a Mediator or Event Aggregator?
我需要在哪個文件中編寫代碼以在symfony2中為EventDispatcher附加偵聽器 [英]In which file do i need to write code for attaching listener for EventDispatcher in symfony2