TYPO3 Core

• Define a RouteEnhancer for a certain page type:
  

  routeEnhancers:
    PageTypeSuffix:
      type: PageType
      default: ''
      map:
        foo: 1234

• Call some method that uses TYPO3\CMS\Frontend\Typolink\PageLinkBuilder, including a typeNum as parameter.
  

  <f:uri.page pageType="{type}" additionalParams="{sitemap: sitemap.key, page: sitemap.page}" absolute="true" noCacheHash="false" />
  $uri = $uriBuilder->setTargetPageUid($pageUid)->setTargetPageType($pageType)->build();

• The typeNum used in the example code above should NOT be registered in the RouteEnhancers. E.g. '5678' to fit the defined RouteEnhancer above.

• TYPO3 then tries to use \TYPO3\CMS\Core\Routing\Enhancer\PageTypeDecorator to add the defined page type in the RouteEnhancers to the URL, although for the selected typeNum ('5678') there is no RouteEnhancer defined.
• This leads to method decorateForGeneration() removing the typeNum:
  

  $deflatedParameters = $existingRoute->getOption('deflatedParameters') ?? $parameters;
  if (isset($deflatedParameters['type'])) {
      unset($deflatedParameters['type']);
      $existingRoute->setOption(
          'deflatedParameters',
          $deflatedParameters
      );
  }

• Results in a link without typeNum added to it.

I stumbled across this, when defining a RouteEnhancer for a typeNum I used in a plugin. I also had the TYPO3 seo-extension installed, which defines the typeNum 1533906435 for getting the sitemaps. However the sitmap extension didn't create valid URLs with typeNums, and were therefore useless.

A quick fix is, to also add the typeNum defined by the seo-extension to the RouteEnhancers:

routeEnhancers:
  PageTypeSuffix:
    type: PageType
    default: ''
    map:
      foo: 1234
      sitemap: 1533906435