How to inherit function from extend controller in OOP symfony - php

Question

I would like to know if this is possible in Object Oriented Programming in php. I have a controller
class BaseController extends Controller{
/**
* #Route("/sample", name="sample")
*/
public function postSampleAction(Request $request){
}
}
and I have a file called ProductEvent and PriceEvent
class ProductEvent extends BaseController{
public function checkEvent(){
echo "product event";
}
}
class PriceEvent extends BaseController{
public function checkEvent(){
echo "price event";
}
}
as you can see I extend the BaseController. What I want to happen is that I need to put the checkEvent() to the BaseController in postSampleActioin()
class BaseController extends Controller{
/**
* #Route("/sample", name="sample")
*/
public function postSampleAction(Request $request){
$this->checkEvent();
}
}
I don't know if this is a proper way. I want to test if that will echo the checkEvent() function.
Sorry my mistake. I forgot to add what framework do I used. I used symfony for this.

Answer 1

That means you want to make BaseController an incomplete, abstract class which requires to be inherited and the checkEvent method to be implemented there:
abstract class BaseController extends Controller {
public function postSampleAction(Request $request) {
$this->checkEvent();
}
abstract public function checkEvent();
}
You now cannot instantiate BaseController by itself, and any inheriting non-abstract class needs to implement checkEvent; that gives you the required type safety that allows you to depend on checkEvent in postSampleAction.