Sylius: Only one incomplete object in RequestStack through particular route - request

Question

I am a Symfony beginner and I am writing a plugin for the e-commerce system Sylius: Every route up until now gave me two objects in RequestStack, and I was able to get a very particular variable everywhere through the one I retrieve through $requestStack->getMasterRequest().
In a particular route suddenly the variable (set in yaml file where the routes are configured) is not retrievable and the $requestStack doesn't hold two objects, only one.
I apologize, I know this is very badly explained, I hope someone can make sense of it.
I tried $request = Request::createFromGlobals() and retrieving the Container instead of the RequestStack directly, but both end up with the same result.
# This is the route I am trying to overwrite because I want to give it an extra parameter from the request:
sylius_shop_product_show:
path: /products/{slug}
methods: [GET]
defaults:
_controller: sylius.controller.product:showAction
_sylius:
template: "#SyliusShop/Product/show.html.twig"
repository:
method: findOneByChannelAndSlug_andVarFromRequest
arguments:
- "expr:service('sylius.context.channel').getChannel()"
- "expr:service('sylius.context.locale').getLocaleCode()"
- $slug
- "expr:service('request_stack')"
//This is the function which should be used, it is part of a Repository
public function findOneByChannelAndSlug_andVarFromRequest(ChannelInterface $channel, string $locale, string $slug, RequestStack $requestStack): ?ProductInterface
{
I don't understand why suddenly I cannot get a hold off the variable I can access through all the other routes. Because it is a repository? Is the request not yet completely processed?

Answer 1

Try to enter variable name with $ symbol before its name. For example if your variable name is myVar:
sylius_shop_product_show:
path: /products/{slug}
methods: [GET]
defaults:
_controller: sylius.controller.product:showAction
_sylius:
template: "#SyliusShop/Product/show.html.twig"
repository:
method: findOneByChannelAndSlug_andVarFromRequest
arguments:
- "expr:service('sylius.context.channel').getChannel()"
- "expr:service('sylius.context.locale').getLocaleCode()"
- $slug
- $myVar
How it works under the hood: https://github.com/Sylius/SyliusResourceBundle/blob/1.4/src/Bundle/Controller/ParametersParser.php#L55 Note: $request->get() method is alias to get variable from GET, POST and Symfony attributes.

Answer 2

I solved this myself yesterday. The problem was that I did not declare the sylius_shop_product_show in the correct scope of the route description which also declared the variable I was trying to pass through, thereby Symfony logically was not able to parse it and make it available. Well, seeing the solution right now it makes perfect sense, but before and the fact that I am a Symfony (and thus Sylius) beginner it was hard to understand what was wrong.
So I understood the problem when I executed php bin/console debug:router which listed all the available routes and when I discovered that the route sylius_shop_product_show actually is not creating a route where the variable I was looking for was even available in the routing-path. Thanks for everyone who tried to help me!