Work on service definitions.

src/Alias/ParentAliasGeneratorFactory.php

@@ -0,0 +1,66 @@
+<?php
+
+/**
+ * Leaflet maps for Contao CMS.
+ *
+ * @package    contao-leaflet-maps
+ * @author     David Molineus <david.molineus@netzmacht.de>
+ * @copyright  2016-2017 netzmacht David Molineus. All rights reserved.
+ * @license    LGPL-3.0 https://github.com/netzmacht/contao-leaflet-maps/blob/master/LICENSE
+ * @filesource
+ */
+
+declare(strict_types=1);
+
+namespace Netzmacht\Contao\Leaflet\Alias;
+
+use Doctrine\DBAL\Connection;
+use Netzmacht\Contao\Toolkit\Data\Alias\AliasGenerator;
+use Netzmacht\Contao\Toolkit\Data\Alias\Factory\AliasGeneratorFactory;
+use Netzmacht\Contao\Toolkit\Data\Alias\Filter\ExistingAliasFilter;
+use Netzmacht\Contao\Toolkit\Data\Alias\Filter\SlugifyFilter;
+use Netzmacht\Contao\Toolkit\Data\Alias\Filter\SuffixFilter;
+use Netzmacht\Contao\Toolkit\Data\Alias\FilterBasedAliasGenerator;
+use Netzmacht\Contao\Toolkit\Data\Alias\Validator\UniqueDatabaseValueValidator;
+
+/**
+ * Alias generator validating against the parent id (pid).
+ *
+ * @package Netzmacht\Contao\Leaflet\Alias
+ */
+class ParentAliasGeneratorFactory implements AliasGeneratorFactory
+{
+    /**
+     * Database connection.
+     *
+     * @var Connection
+     */
+    private $connection;
+
+    /**
+     * DefaultAliasGeneratorFactory constructor.
+     *
+     * @param Connection $connection Database connection.
+     */
+    public function __construct(Connection $connection)
+    {
+        $this->connection = $connection;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function create(string $dataContainerName, string $aliasField, array $fields): AliasGenerator
+    {
+        $filters = [
+            new ExistingAliasFilter(),
+            new SlugifyFilter($fields),
+            new DefaultAliasFilter($dataContainerName),
+            new SuffixFilter(),
+        ];
+
+        $validator = new UniqueDatabaseValueValidator($this->connection, $dataContainerName, $aliasField, ['pid']);
+
+        return new FilterBasedAliasGenerator($filters, $validator, $dataContainerName, $aliasField, '_');
+    }
+}