[Documentation] Concepts: Currencies

[CoderMaggie]

Q	A
Doc fix?	yes
New docs?	yes
BC breaks?	no
Related tickets	partially #5275
License	MIT

[pamil]

Will be quite outdated after #5497 🎉

[CoderMaggie]

@pamil not everything, but yes. Some parts are waiting for its merge :)

[pjedrzejewski]

@TheMadeleine I think we are missing example of switching the currency, hm?

[pamil]

There's sylius.storage.currency service implementing Sylius\Component\Core\Currency\CurrencyStorageInterface with methods set(ChannelInterface $channel, $currencyCode) and get(ChannelInterface $channel).

So $container->get('sylius.storage.currency')->set($channel, 'PLN') may be an example.

[pjedrzejewski]

@pamil What do you think about switching the currency on the context itself? That would be of course separate interface and implementation. Because using storage for that sounds weird. Storage should probably be a private service.

[pamil]

This would require additional type checks before any call to that context. Moreover, creating decorators for contexts would be nearly impossible.

Let's say we've got SettableCurrencyContextInterface, so decorator for it should also implement the same. But since we can also decorate a regular context, we need to perform a type check inside set() in the decorator, which results that we can't rely on that interface fully.

I don't like those storage mess too much, but it seems much simplier for now.

[NoResponseMate]

to override?

[pjedrzejewski]

Thanks Magda and Kamil!