TYPO3 Routing: Multiple Path Segments - typo3

Question

I am trying to generate tree URLs for some categories.
The URLs should look like this: /category1/subcategory1/subcategory2.
The amount of path segments should be flexible since I don't know how deep the categories will be.
I got the first path segment working with the following config and a custom Mapper:
ProductsPlugin:
type: Extbase
limitToPages:
- 5
extension: MyExt
plugin: Products
routes:
-
routePath: '/{category_title}'
_controller: 'Products::list'
_arguments:
category_title: id
defaultController: 'Products::list'
requirements:
category_title: '[0-9]{1..6}'
aspects:
category_title:
type: ProductsValueMapper
The Mapper looks like this:
<?php
namespace Vendor\MyExt\Routing\Aspect;
use TYPO3\CMS\Core\Routing\Aspect\PersistedMappableAspectInterface;
use TYPO3\CMS\Core\Site\SiteLanguageAwareTrait;
class ProductsValueMapper implements PersistedMappableAspectInterface
{
use SiteLanguageAwareTrait;
/**
* #param string $value
*
* #return string|null
*/
public function generate(string $value): ?string
{
/**
* returns one or more path segments
* e.g. category1 or category1/subcategory1
*/
return $slug;
}
/**
* #param string $value
*
* #return string|null
*/
public function resolve(string $value): ?string
{
/**
* returns the id of the category from the last path segment
*/
return $id;
}
}
For just a single category it works fine. But as soon as a subcategory is requested the code breaks. The link to the subcategory only contains the path segment of the subcategory, e.g. /subcategory1, but not the one of the category.
It's clear to me why that is, since I only add the id of the subcategory to LinkViewHelper: <f:link.action controller="Products" action="list" arguments="{id: 5}">Test Link</f:link.action>. But I can
Which screws do I need to adjust to make the URLs work also for any depth of subcategories?
Thanks in advance!

Answer 1

You have to allow / as requirements. The default requirement is [^/]+ and you specified only a number.
This should work:
ProductsPlugin:
requirements:
category_title: .+
See also Symfony-Docs: https://symfony.com/doc/4.1/routing/slash_in_parameter.html