For whatever reason the EventSubscribers just didn't fully function as expected.
Amazingly adding a hook right after one of the event dispatches results in a hook that works well.
Here's the patch code:
diff --git a/src/FacetManager/DefaultFacetManager.php b/src/FacetManager/DefaultFacetManager.php
index 3cf2d03..03060ae 100644
--- a/src/FacetManager/DefaultFacetManager.php
+++ b/src/FacetManager/DefaultFacetManager.php
@@ -375,6 +375,9 @@ class DefaultFacetManager {
$event = new PostBuildFacet($facet);
$eventDispatcher->dispatch($event);
+ // Call procedural hook to allow module-based preselection or changes.
+ \Drupal::moduleHandler()->invokeAll('facets_post_build_facet', [$facet]);
+
$this->builtFacets[$facet->getFacetSourceId()][$facet->id()] = $event->getFacet();
}
and here's the example of my hook that does something useful:
/**
* Implements hook_facets_post_build_facet().
*/
function mymodule_facets_post_build_facet(\Drupal\facets\FacetInterface $facet) {
if ($facet->getFieldIdentifier() !== 'language' && $facet->getFieldIdentifier() !== 'langcode') {
return;
}
$params = \Drupal::request()->query->all();
$hasLanguage = FALSE;
foreach ($params as $group) {
if (is_array($group)) {
foreach ($group as $value) {
if (is_string($value) && str_starts_with($value, 'language:')) {
$hasLanguage = TRUE;
break 2;
}
}
}
}
if (!$hasLanguage) {
$langcode = \Drupal::languageManager()->getCurrentLanguage()->getId();
foreach ($facet->getResults() as $result) {
if ($result->getRawValue() === $langcode) {
$result->setActiveState(TRUE);
}
}
}
}
add two or more languages, add and translate content, add a language facet.
See patch/merge request.
TBD
See issue description
Yes
N/A
Needs work
3.0
Code
ah wow it's late (or very early), actually I tested again and the EventSubscriber and hook approach are doing the same exact thing. Both are not doing what I want.