Allow to edit the GTIN property of a part and validate the GTIN

src/Entity/Parts/PartTraits/AdvancedPropertyTrait.php

@@ -24,6 +24,7 @@ namespace App\Entity\Parts\PartTraits;
 
 use App\Entity\Parts\InfoProviderReference;
 use App\Entity\Parts\PartCustomState;
+use App\Validator\Constraints\ValidGTIN;
 use Doctrine\DBAL\Types\Types;
 use App\Entity\Parts\Part;
 use Doctrine\ORM\Mapping as ORM;
@@ -89,7 +90,7 @@ trait AdvancedPropertyTrait
      */
     #[Groups(['extended', 'full', 'import', 'part:read', 'part:write'])]
     #[ORM\Column(type: Types::STRING, nullable: true)]
-    #[Length(max: 14)]
+    #[ValidGTIN]
     protected ?string $gtin = null;
 
     /**

src/Form/Part/PartBaseType.php

@@ -216,7 +216,13 @@ class PartBaseType extends AbstractType
                 'disable_not_selectable' => true,
                 'label' => 'part.edit.partCustomState',
             ])
-            ->add('ipn', TextType::class, $ipnOptions);
+            ->add('ipn', TextType::class, $ipnOptions)
+            ->add('gtin', TextType::class, [
+                'required' => false,
+                'empty_data' => null,
+                'label' => 'part.gtin',
+            ])
+            ;
 
         //Comment section
         $builder->add('comment', RichTextEditorType::class, [

src/Validator/Constraints/ValidGTIN.php

@@ -0,0 +1,35 @@
+<?php
+/*
+ * This file is part of Part-DB (https://github.com/Part-DB/Part-DB-symfony).
+ *
+ *  Copyright (C) 2019 - 2026 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\Validator\Constraints;
+
+use Symfony\Component\Validator\Constraint;
+
+/**
+ * A constraint to ensure that a GTIN is valid.
+ */
+#[\Attribute(\Attribute::TARGET_PROPERTY)]
+class ValidGTIN extends Constraint
+{
+
+}

src/Validator/Constraints/ValidGTINValidator.php

@@ -0,0 +1,54 @@
+<?php
+/*
+ * This file is part of Part-DB (https://github.com/Part-DB/Part-DB-symfony).
+ *
+ *  Copyright (C) 2019 - 2026 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\Validator\Constraints;
+
+use GtinValidation\GtinValidator;
+use Symfony\Component\Validator\Constraint;
+use Symfony\Component\Validator\ConstraintValidator;
+use Symfony\Component\Validator\Exception\UnexpectedTypeException;
+
+class ValidGTINValidator extends ConstraintValidator
+{
+
+    public function validate(mixed $value, Constraint $constraint): void
+    {
+        if (!$constraint instanceof ValidGTIN) {
+            throw new UnexpectedTypeException($constraint, ValidGTIN::class);
+        }
+
+        if (null === $value || '' === $value) {
+            return;
+        }
+
+        if (!is_string($value)) {
+            throw new UnexpectedTypeException($value, 'string');
+        }
+
+        $gtinValidator = new GtinValidator($value);
+        if (!$gtinValidator->isValid()) {
+            $this->context->buildViolation('validator.invalid_gtin')
+                ->addViolation();
+        }
+    }
+}