Use BigDecimal object type for Supplier shipping costs, instead of bcmath string.

src/Helpers/BigDecimalType.php

@@ -0,0 +1,74 @@
+<?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\Helpers;
+
+
+use Brick\Math\BigDecimal;
+use Doctrine\DBAL\Platforms\AbstractPlatform;
+use Doctrine\DBAL\Types\Type;
+
+class BigDecimalType extends Type
+{
+    public const BIG_DECIMAL = 'big_decimal';
+
+    public function getSQLDeclaration(array $fieldDeclaration, AbstractPlatform $platform)
+    {
+        return $platform->getDecimalTypeDeclarationSQL($fieldDeclaration);
+    }
+
+    /**
+     * @param  string  $value
+     * @param  AbstractPlatform  $platform
+     * @return BigDecimal|\Brick\Math\BigNumber|mixed
+     */
+    public function convertToPHPValue($value, AbstractPlatform $platform)
+    {
+        if ($value === null) {
+            return null;
+        }
+
+        return BigDecimal::of($value);
+    }
+
+    /**
+     * @param  BigDecimal  $value
+     * @param  AbstractPlatform  $platform
+     * @return mixed
+     */
+    public function convertToDatabaseValue($value, AbstractPlatform $platform)
+    {
+        if ($value === null) {
+            return null;
+        }
+
+        return (string) $value;
+    }
+
+    public function getName()
+    {
+        return self::BIG_DECIMAL;
+    }
+
+    public function requiresSQLCommentHint(AbstractPlatform $platform)
+    {
+        return true;
+    }
+}