TYPO3 CMS TypoScript Condition to check for existing translation of current page

_README.md

Usage

[userFunc = \Vendorname\Extension\UserConditions\user_translationExistsNot()] && [globalVar = GP:L > 0]
    # Add canonical tag
    # and/or display a notice, that the current page is not translated yet and the original contents are displayed
[global]

Install

• put the user conditons (two php files) to EXT:extension/Classes/UserConditions/
• update php namespace
• Include the files in ext_localconf.php:

    $extensionPath = \TYPO3\CMS\Core\Utility\ExtensionManagementUtility::extPath($_EXTKEY);
    
    // User Conditions
    require_once($extensionPath . 'Classes/UserConditions/user_translationExists.php');
    require_once($extensionPath . 'Classes/UserConditions/user_translationExistsNot.php');

user_translationExists.php

<?php
namespace Vendorname\Extension\UserConditions;

use TYPO3\CMS\Core\Utility\GeneralUtility;
use \TYPO3\CMS\Frontend\ContentObject\ContentObjectRenderer;

/**
 * Checks if the current page in frontend has a translation.
 *
 * Usage:
 * [userFunc = \Vendorname\Extension\UserConditions\user_translationExists()] && [globalVar = GP:L > 0]
 *
 * @return bool Returns TRUE if the current page has been translated
 */
function user_translationExists()
{
    if (TYPO3_MODE !== 'FE' || GeneralUtility::_GP('eID')) {
        return null;
    }

    /** @var $contentObjectRenderer ContentObjectRenderer */
    $contentObjectRenderer = GeneralUtility::makeInstance('TYPO3\CMS\Frontend\ContentObject\ContentObjectRenderer');
    $sysLanguageUid = (int) GeneralUtility::_GP('L');
    $pageUid = (int) $GLOBALS['TSFE']->id;

    $res = $GLOBALS['TYPO3_DB']->exec_SELECTquery(
        'uid',
        'pages_language_overlay',
        'pid = ' . $pageUid . ' AND sys_language_uid = ' . $sysLanguageUid .
        $contentObjectRenderer->enableFields('pages_language_overlay')
    );
    return (bool) $GLOBALS['TYPO3_DB']->sql_num_rows($res);
}

user_translationExistsNot.php

<?php
namespace Vendorname\Extension\UserConditions;

/**
 * Checks if the current page in frontend has NOT a translation.
 *
 * Usage:
 * [userFunc = \Vendorname\Extension\UserConditions\user_translationExistsNot()] && [globalVar = GP:L > 0]
 *
 * @return bool Returns TRUE if the current page has been NOT translated
 */
function user_translationExistsNot()
{
    return !user_translationExists();
}