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typo3/sysext/install/Classes/Updates/SplitMenusUpdate.php

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+<?php
+namespace TYPO3\CMS\Install\Updates;
+
+/*
+ * This file is part of the TYPO3 CMS project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+use TYPO3\CMS\Core\Database\ConnectionPool;
+use TYPO3\CMS\Core\Utility\GeneralUtility;
+
+/**
+ * Split menu types into dedicated content elements
+ * @internal This class is only meant to be used within EXT:install and is not part of the TYPO3 Core API.
+ */
+class SplitMenusUpdate implements UpgradeWizardInterface
+{
+    /**
+     * @return string Unique identifier of this updater
+     */
+    public function getIdentifier(): string
+    {
+        return 'splitMenusUpdate';
+    }
+
+    /**
+     * @return string Title of this updater
+     */
+    public function getTitle(): string
+    {
+        return 'Split menu types into dedicated content elements';
+    }
+
+    /**
+     * @return string Longer description of this updater
+     */
+    public function getDescription(): string
+    {
+        return 'Menus have been split into dedicated content elements to provide '
+            . 'a better maintainability and more easy to adjustable template with single '
+            . 'responsibility for the rendering.';
+    }
+
+    /**
+     * Checks if an update is needed
+     *
+     * @return bool Whether an update is needed (TRUE) or not (FALSE)
+     */
+    public function updateNecessary(): bool
+    {
+        $connection = GeneralUtility::makeInstance(ConnectionPool::class)->getConnectionForTable('tt_content');
+        $tableColumns = $connection->getSchemaManager()->listTableColumns('tt_content');
+        // Only proceed if menu_type field still exists
+        if (!isset($tableColumns['menu_type'])) {
+            return false;
+        }
+        $queryBuilder = GeneralUtility::makeInstance(ConnectionPool::class)->getQueryBuilderForTable('tt_content');
+        $queryBuilder->getRestrictions()->removeAll();
+        $elementCount = $queryBuilder->count('uid')
+            ->from('tt_content')
+            ->where(
+                $queryBuilder->expr()->eq('CType', $queryBuilder->createNamedParameter('menu', \PDO::PARAM_STR))
+            )
+            ->execute()->fetchColumn(0);
+        return (bool)$elementCount;
+    }
+
+    /**
+     * @return string[] All new fields and tables must exist
+     */
+    public function getPrerequisites(): array
+    {
+        return [
+            DatabaseUpdatedPrerequisite::class
+        ];
+    }
+
+    /**
+     * Performs the database update
+     *
+     * @return bool
+     */
+    public function executeUpdate(): bool
+    {
+        $connection = GeneralUtility::makeInstance(ConnectionPool::class)->getConnectionForTable('tt_content');
+        $queryBuilder = $connection->createQueryBuilder();
+        $queryBuilder->getRestrictions()->removeAll();
+        $statement = $queryBuilder->select('uid', 'header', 'menu_type')
+            ->from('tt_content')
+            ->where(
+                $queryBuilder->expr()->eq(
+                    'CType',
+                    $queryBuilder->createNamedParameter('menu', \PDO::PARAM_STR)
+                )
+            )
+            ->execute();
+        while ($record = $statement->fetch()) {
+            $queryBuilder = $connection->createQueryBuilder();
+            $queryBuilder->update('tt_content')
+                ->where(
+                    $queryBuilder->expr()->eq(
+                        'uid',
+                        $queryBuilder->createNamedParameter($record['uid'], \PDO::PARAM_INT)
+                    )
+                )
+                ->set('CType', $this->mapMenuTypes($record['menu_type']));
+            $queryBuilder->execute();
+        }
+        return true;
+    }
+
+    /**
+     * Map the old to the new values
+     *
+     * @param string $menuType The content of the FlexForm
+     * @return string The equivalent CType
+     */
+    protected function mapMenuTypes($menuType)
+    {
+        $mapping = [
+            0 => 'menu_pages',
+            1 => 'menu_subpages',
+            2 => 'menu_sitemap',
+            3 => 'menu_section',
+            4 => 'menu_abstract',
+            5 => 'menu_recently_updated',
+            6 => 'menu_related_pages',
+            7 => 'menu_section_pages',
+            8 => 'menu_sitemap_pages',
+            'categorized_pages' => 'menu_categorized_pages',
+            'categorized_content' => 'menu_categorized_content'
+        ];
+        if (array_key_exists($menuType, $mapping)) {
+            return $mapping[$menuType];
+        }
+        return 'menu_' . $menuType;
+    }
+}