Add support to copy translated values

src/Attribute/ITranslatedWithFallbackControl.php

@@ -0,0 +1,57 @@
+<?php
+
+/**
+ * This file is part of MetaModels/core.
+ *
+ * (c) 2012-2026 The MetaModels team.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ *
+ * This project is provided in good faith and hope to be usable by anyone.
+ *
+ * @package    MetaModels/core
+ * @author     Ingolf Steinhardt <info@e-spin.de>
+ * @copyright  2012-2026 The MetaModels team.
+ * @license    https://github.com/MetaModels/core/blob/master/LICENSE LGPL-3.0-or-later
+ * @filesource
+ */
+
+namespace MetaModels\Attribute;
+
+/**
+ * Extended interface for translated attributes that support fetching raw per-language data without automatic fallback
+ * to the main language.
+ *
+ * This separate interface allows opt-in without breaking existing ITranslated implementors.
+ * Consumers check instanceof before calling getTranslatedDataForWithoutFallback().
+ */
+interface ITranslatedWithFallbackControl extends ITranslated
+{
+    /**
+     * Get values for the given items in a certain language without falling back to the main language.
+     *
+     * Unlike getTranslatedDataFor(), this method returns only data actually stored for $strLangCode.
+     * No second pass against the main language is performed.
+     *
+     * @param list<string> $arrIds      The ids for which values shall be retrieved.
+     * @param string       $strLangCode The language code for which the data shall be retrieved.
+     *
+     * @return array<string, array<string, mixed>> the values.
+     */
+    public function getTranslatedDataForWithoutFallback(array $arrIds, string $strLangCode): array;
+
+    /**
+     * Save translated data for a given language, potentially with attribute-specific transformation.
+     *
+     * Implementations may transform the data before persisting it — e.g. a unique-alias attribute
+     * re-generates the slug to satisfy its uniqueness constraint. The default behaviour is to call
+     * setTranslatedDataFor() verbatim.
+     *
+     * @param array<string, array<string, mixed>> $arrValues   The values keyed by item id.
+     * @param string                              $strLangCode The language code being processed.
+     *
+     * @return void
+     */
+    public function applyTranslatedDataFor(array $arrValues, string $strLangCode): void;
+}

src/Attribute/TranslatedReference.php

@@ -3,7 +3,7 @@
 /**
  * This file is part of MetaModels/core.
  *
- * (c) 2012-2024 The MetaModels team.
+ * (c) 2012-2026 The MetaModels team.
  *
  * For the full copyright and license information, please view the LICENSE
  * file that was distributed with this source code.
@@ -19,7 +19,7 @@
  * @author     Sven Baumann <baumann.sv@gmail.com>
  * @author     David Molineus <david.molineus@netzmacht.de>
  * @author     Andreas Fischer <anfischer@kaffee-partner.de>
- * @copyright  2012-2024 The MetaModels team.
+ * @copyright  2012-2026 The MetaModels team.
  * @license    https://github.com/MetaModels/core/blob/master/LICENSE LGPL-3.0-or-later
  * @filesource
  */
@@ -38,7 +38,7 @@
  *
  * @SuppressWarnings(PHPMD.ExcessiveClassComplexity)
  */
-abstract class TranslatedReference extends BaseComplex implements ITranslated
+abstract class TranslatedReference extends BaseComplex implements ITranslatedWithFallbackControl
 {
     /**
      * Database connection.
@@ -455,6 +455,24 @@ protected function fetchExistingIdsFor($idList, $langCode)
         return $queryBuilder->executeQuery()->fetchFirstColumn();
     }
 
+    /**
+     * {@inheritDoc}
+     */
+    #[\Override]
+    public function getTranslatedDataForWithoutFallback(array $arrIds, string $strLangCode): array
+    {
+        return $this->getTranslatedDataFor($arrIds, $strLangCode);
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    #[\Override]
+    public function applyTranslatedDataFor(array $arrValues, string $strLangCode): void
+    {
+        $this->setTranslatedDataFor($arrValues, $strLangCode);
+    }
+
     /**
      * {@inheritDoc}
      */

src/CoreBundle/Resources/config/listeners.yml

@@ -48,6 +48,24 @@ services:
                 event: dc-general.model.pre-duplicate
                 method: handle
 
+    metamodels.copy_translated_data_listener:
+        class: MetaModels\DcGeneral\Events\MetaModel\CopyTranslatedData
+        arguments:
+            - "@metamodels.factory"
+        tags:
+            -   name: kernel.event_listener
+                event: dc-general.model.post-duplicate
+                method: handle
+
+    metamodels.reset_language_after_duplicate_listener:
+        class: MetaModels\DcGeneral\Events\MetaModel\ResetLanguageAfterDuplicate
+        arguments:
+            - "@metamodels.factory"
+        tags:
+            -   name: kernel.event_listener
+                event: dc-general.model.post-duplicate
+                method: handle
+
     metamodels.sub_system_boot:
         class: MetaModels\CoreBundle\EventListener\SubSystemBootListener
         arguments:

src/DcGeneral/Events/MetaModel/CopyTranslatedData.php

@@ -0,0 +1,108 @@
+<?php
+
+/**
+ * This file is part of MetaModels/core.
+ *
+ * (c) 2012-2026 The MetaModels team.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ *
+ * This project is provided in good faith and hope to be usable by anyone.
+ *
+ * @package    MetaModels/core
+ * @author     Ingolf Steinhardt <info@e-spin.de>
+ * @copyright  2012-2026 The MetaModels team.
+ * @license    https://github.com/MetaModels/core/blob/master/LICENSE LGPL-3.0-or-later
+ * @filesource
+ */
+
+namespace MetaModels\DcGeneral\Events\MetaModel;
+
+use ContaoCommunityAlliance\DcGeneral\Event\PostDuplicateModelEvent;
+use MetaModels\Attribute\ITranslatedWithFallbackControl;
+use MetaModels\IFactory;
+use MetaModels\ITranslatedMetaModel;
+
+/**
+ * Copies translated attribute data for all languages when an item is duplicated.
+ *
+ * The normal DC_General duplicate path only saves data for the currently active language. This listener runs after
+ * the copy has been persisted and iterates every language, copying each translated attribute's raw (non-fallback) data
+ * from the source item to the new item.
+ */
+final class CopyTranslatedData
+{
+    /**
+     * The MetaModels factory.
+     *
+     * @var IFactory
+     */
+    private IFactory $factory;
+
+    /**
+     * Create a new instance.
+     *
+     * @param IFactory $factory The factory.
+     */
+    public function __construct(IFactory $factory)
+    {
+        $this->factory = $factory;
+    }
+
+    /**
+     * Copy translated data for all languages after a model has been duplicated.
+     *
+     * @param PostDuplicateModelEvent $event The event.
+     *
+     * @return void
+     */
+    public function handle(PostDuplicateModelEvent $event): void
+    {
+        $sourceId = (string) $event->getSourceModel()->getId();
+        $newId    = (string) $event->getModel()->getId();
+
+        if ('' === $sourceId || '' === $newId || $sourceId === $newId) {
+            return;
+        }
+
+        $metaModel = $this->factory->getMetaModel($event->getModel()->getProviderName());
+        if (!$metaModel instanceof ITranslatedMetaModel) {
+            return;
+        }
+
+        foreach ($metaModel->getLanguages() as $language) {
+            $this->copyLanguage($metaModel, $language, $sourceId, $newId);
+        }
+    }
+
+    /**
+     * Copy all translated attributes for a single language.
+     *
+     * @param ITranslatedMetaModel $metaModel The MetaModel.
+     * @param string               $language  The language code.
+     * @param string               $sourceId  The source item ID.
+     * @param string               $newId     The new item ID.
+     *
+     * @return void
+     */
+    private function copyLanguage(
+        ITranslatedMetaModel $metaModel,
+        string $language,
+        string $sourceId,
+        string $newId
+    ): void {
+        foreach ($metaModel->getAttributes() as $attribute) {
+            if (!$attribute instanceof ITranslatedWithFallbackControl) {
+                continue;
+            }
+
+            $data = $attribute->getTranslatedDataForWithoutFallback([$sourceId], $language);
+            if ([] === $data || !isset($data[$sourceId])) {
+                continue;
+            }
+
+            $attribute->applyTranslatedDataFor([$newId => $data[$sourceId]], $language);
+        }
+    }
+}

src/DcGeneral/Events/MetaModel/ResetLanguageAfterDuplicate.php

@@ -0,0 +1,79 @@
+<?php
+
+/**
+ * This file is part of MetaModels/core.
+ *
+ * (c) 2012-2026 The MetaModels team.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ *
+ * This project is provided in good faith and hope to be usable by anyone.
+ *
+ * @package    MetaModels/core
+ * @author     Ingolf Steinhardt <info@e-spin.de>
+ * @copyright  2012-2026 The MetaModels team.
+ * @license    https://github.com/MetaModels/core/blob/master/LICENSE LGPL-3.0-or-later
+ * @filesource
+ */
+
+namespace MetaModels\DcGeneral\Events\MetaModel;
+
+use ContaoCommunityAlliance\DcGeneral\Event\PostDuplicateModelEvent;
+use ContaoCommunityAlliance\DcGeneral\SessionStorageInterface;
+use MetaModels\IFactory;
+use MetaModels\ITranslatedMetaModel;
+
+/**
+ * Resets the active language to the fallback language after a model is duplicated.
+ *
+ * When a new record is created, LanguageFilter automatically resets to the fallback language. Copying a record
+ * redirects to act=edit with the new ID, so LanguageFilter does not apply the reset. This listener writes the
+ * fallback language into the dc-general session so that the subsequent edit opens in the fallback language,
+ * consistent with the behaviour for new records.
+ */
+final class ResetLanguageAfterDuplicate
+{
+    /**
+     * The MetaModels factory.
+     *
+     * @var IFactory
+     */
+    private IFactory $factory;
+
+    /**
+     * Create a new instance.
+     *
+     * @param IFactory $factory The factory.
+     */
+    public function __construct(IFactory $factory)
+    {
+        $this->factory = $factory;
+    }
+
+    /**
+     * Reset the session language to the fallback after a model has been duplicated.
+     *
+     * @param PostDuplicateModelEvent $event The event.
+     *
+     * @return void
+     */
+    public function handle(PostDuplicateModelEvent $event): void
+    {
+        $model        = $event->getModel();
+        $providerName = $model->getProviderName();
+
+        $metaModel = $this->factory->getMetaModel($providerName);
+        if (!$metaModel instanceof ITranslatedMetaModel) {
+            return;
+        }
+
+        $environment    = $event->getEnvironment();
+        $sessionStorage = $environment->getSessionStorage();
+        assert($sessionStorage instanceof SessionStorageInterface);
+
+        $session                               = (array) $sessionStorage->get('dc_general');
+        $session['ml_support'][$providerName]  = $metaModel->getMainLanguage();
+        $sessionStorage->set('dc_general', $session);
+    }
+}