Support invokable controllers in annotation toggle listener

[krizon]

Symfony supports invokable controllers. So the FilterControllerEvent:: getController can contain an object instead of an array. This MR adds support for invokable controllers in the (annotation) toggle listener.

[othillo]

this probably doesn't work with closures but we didn't support them anyway.

[asm89]

Does Symfony provide any helpers to figure this out?

[asm89]

Hm, a quick git grep 'if (is_array($controller)) {' finds a few references. Some of them do something similar, but I couldn't find a helper after looking quickly.

[krizon]

@asm89 no I did research and couldn't find either. There are multiple/different checks but not isolated in a re-usable helper

[othillo]

You can check if __invoke exists in the class.
(Or check if not instanceof Closure).

[krizon]

Yeah that's no problem, I only focussed on invokable controllers because that solves our problem but I'll see if I can add support for closures later today.

[wjzijderveld]

Thanks @krizon

The checking for __invoke is already done by Reflection in this case. Maybe we should make the validation a bit stricter, although it won't help with the readability of this code :-)