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application/Espo/Classes/FieldDuplicators/LinkMultiple.php

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+<?php
+/************************************************************************
+ * This file is part of EspoCRM.
+ *
+ * EspoCRM – Open Source CRM application.
+ * Copyright (C) 2014-2025 EspoCRM, Inc.
+ * Website: https://www.espocrm.com
+ *
+ * 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/>.
+ *
+ * The interactive user interfaces in modified source and object code versions
+ * of this program must display Appropriate Legal Notices, as required under
+ * Section 5 of the GNU Affero General Public License version 3.
+ *
+ * In accordance with Section 7(b) of the GNU Affero General Public License version 3,
+ * these Appropriate Legal Notices must retain the display of the "EspoCRM" word.
+ ************************************************************************/
+
+namespace Espo\Classes\FieldDuplicators;
+
+use Espo\Core\Record\Duplicator\FieldDuplicator;
+use Espo\ORM\Entity;
+use Espo\ORM\EntityManager;
+
+use stdClass;
+
+class LinkMultiple implements FieldDuplicator
+{
+    private EntityManager $entityManager;
+
+    public function __construct(EntityManager $entityManager)
+    {
+        $this->entityManager = $entityManager;
+    }
+
+    public function duplicate(Entity $entity, string $field): stdClass
+    {
+        $valueMap = (object) [];
+
+        $entityDefs = $this->entityManager
+            ->getDefs()
+            ->getEntity($entity->getEntityType());
+
+        if (!$entity->hasRelation($field)) {
+            return $valueMap;
+        }
+
+        $relationDefs = $entityDefs->getRelation($field);
+
+        if (
+            !$relationDefs->hasForeignEntityType() ||
+            !$relationDefs->hasForeignRelationName()
+        ) {
+            return $valueMap;
+        }
+
+        $foreignRelationType = $this->entityManager
+            ->getDefs()
+            ->getEntity($relationDefs->getForeignEntityType())
+            ->getRelation($relationDefs->getForeignRelationName())
+            ->getType();
+
+        if ($foreignRelationType !== Entity::MANY_MANY) {
+            $valueMap->{$field . 'Ids'} = [];
+            $valueMap->{$field . 'Names'} = (object) [];
+            $valueMap->{$field . 'Columns'} = (object) [];
+        }
+
+        return $valueMap;
+    }
+}