Register synonyms for element types as global translation parameters

src/Controller/SettingsController.php

@@ -64,7 +64,7 @@ class SettingsController extends AbstractController
             $this->settingsManager->save($settings);
 
             //It might be possible, that the tree settings have changed, so clear the cache
-            $cache->invalidateTags(['tree_tools', 'tree_treeview', 'sidebar_tree_update']);
+            $cache->invalidateTags(['tree_tools', 'tree_treeview', 'sidebar_tree_update', 'synonyms']);
 
             $this->addFlash('success', t('settings.flash.saved'));
         }

src/EventListener/RegisterSynonymsAsTranslationParameters.php

@@ -0,0 +1,93 @@
+<?php
+/*
+ * This file is part of Part-DB (https://github.com/Part-DB/Part-DB-symfony).
+ *
+ *  Copyright (C) 2019 - 2025 Jan Böhmer (https://github.com/jbtronics)
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU Affero General Public License as published
+ *  by the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU Affero General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Affero General Public License
+ *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+declare(strict_types=1);
+
+
+namespace App\EventListener;
+
+use App\Services\ElementTypeNameGenerator;
+use App\Services\ElementTypes;
+use Symfony\Component\DependencyInjection\Attribute\Autowire;
+use Symfony\Component\EventDispatcher\Attribute\AsEventListener;
+use Symfony\Component\HttpKernel\Event\RequestEvent;
+use Symfony\Component\Translation\Translator;
+use Symfony\Contracts\Cache\CacheInterface;
+use Symfony\Contracts\Cache\ItemInterface;
+use Symfony\Contracts\Cache\TagAwareCacheInterface;
+use Symfony\Contracts\Translation\TranslatorInterface;
+
+#[AsEventListener]
+readonly class RegisterSynonymsAsTranslationParameters
+{
+    private Translator $translator;
+
+    public function __construct(
+        #[Autowire(service: 'translator.default')] TranslatorInterface $translator,
+        private TagAwareCacheInterface $cache,
+        private ElementTypeNameGenerator $typeNameGenerator)
+    {
+        if (!$translator instanceof Translator) {
+            throw new \RuntimeException('Translator must be an instance of Symfony\Component\Translation\Translator or this listener cannot be used.');
+        }
+        $this->translator = $translator;
+    }
+
+    public function getSynonymPlaceholders(): array
+    {
+        return $this->cache->get('partdb_synonym_placeholders', function (ItemInterface $item) {
+            $item->tag('synonyms');
+
+
+            $placeholders = [];
+
+            //Generate a placeholder for each element type
+            foreach (ElementTypes::cases() as $elementType) {
+                //We have a placeholder for singular
+                $placeholders['{' . $elementType->value . '}'] = $this->typeNameGenerator->typeLabel($elementType);
+                //We have a placeholder for plural
+                $placeholders['{{' . $elementType->value . '}}'] = $this->typeNameGenerator->typeLabelPlural($elementType);
+
+                //And we have lowercase versions for both
+                $placeholders['[' . $elementType->value . ']'] = mb_strtolower($this->typeNameGenerator->typeLabel($elementType));
+                $placeholders['[' . $elementType->value . ']'] = mb_strtolower($this->typeNameGenerator->typeLabelPlural($elementType));
+            }
+
+            return $placeholders;
+        });
+    }
+
+    public function __invoke(RequestEvent $event): void
+    {
+        //If we already added the parameters, skip adding them again
+        if (isset($this->translator->getGlobalParameters()['@@partdb_synonyms_registered@@'])) {
+            return;
+        }
+
+        //Register all placeholders for synonyms
+        $placeholders = $this->getSynonymPlaceholders();
+        foreach ($placeholders as $key => $value) {
+            $this->translator->addGlobalParameter($key, $value);
+        }
+
+        //Register the marker parameter to avoid double registration
+        $this->translator->addGlobalParameter('@@partdb_synonyms_registered@@', 'registered');
+    }
+}