Allow to generate multiple labels at once (multiple pages in 1 PDF file).

src/Validator/Constraints/Misc/ValidRange.php

@@ -0,0 +1,33 @@
+<?php
+/**
+ * This file is part of Part-DB (https://github.com/Part-DB/Part-DB-symfony).
+ *
+ * Copyright (C) 2019 - 2020 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/>.
+ */
+
+namespace App\Validator\Constraints\Misc;
+
+
+use Symfony\Component\Validator\Constraint;
+
+/**
+ * @Annotation
+ * @package App\Validator\Constraints\Misc
+ */
+class ValidRange extends Constraint
+{
+    public $message = 'validator.invalid_range';
+}

src/Validator/Constraints/Misc/ValidRangeValidator.php

@@ -0,0 +1,61 @@
+<?php
+/**
+ * This file is part of Part-DB (https://github.com/Part-DB/Part-DB-symfony).
+ *
+ * Copyright (C) 2019 - 2020 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/>.
+ */
+
+namespace App\Validator\Constraints\Misc;
+
+
+use App\Services\Misc\RangeParser;
+use Symfony\Component\Validator\Constraint;
+use Symfony\Component\Validator\ConstraintValidator;
+use Symfony\Component\Validator\Exception\UnexpectedTypeException;
+use Symfony\Component\Validator\Exception\UnexpectedValueException;
+
+class ValidRangeValidator extends ConstraintValidator
+{
+
+    protected $rangeParser;
+
+    public function __construct(RangeParser $rangeParser)
+    {
+        $this->rangeParser = $rangeParser;
+    }
+
+    public function validate($value, Constraint $constraint)
+    {
+        if (!$constraint instanceof ValidRange) {
+            throw new UnexpectedTypeException($constraint, ValidRange::class);
+        }
+
+        // custom constraints should ignore null and empty values to allow
+        // other constraints (NotBlank, NotNull, etc.) take care of that
+        if (null === $value || '' === $value) {
+            return;
+        }
+
+        if (!is_string($value)) {
+            throw new UnexpectedValueException($value, 'string');
+        }
+
+        if(!$this->rangeParser->isValidRange($value)) {
+            $this->context->buildViolation($constraint->message)
+                ->addViolation();
+        }
+    }
+}