Question

Is it possible to get the current language key (or code) in a TYPO3 Fluid template?

In the meantime I’ve found another solution using a view helper found here:

<?php

class Tx_AboUnitReservation_ViewHelpers_LanguageViewHelper extends Tx_Fluid_Core_ViewHelper_AbstractViewHelper
{   
    /**
     * Get the current language
     */
    protected function getLanguage()
    {
        if (TYPO3_MODE === 'FE') {
            if (isset($GLOBALS['TSFE']->config['config']['language'])) {
                return $GLOBALS['TSFE']->config['config']['language'];
            }
        } elseif (strlen($GLOBALS['BE_USER']->uc['lang']) > 0) {
            return $GLOBALS['BE_USER']->uc['lang'];
        }
        return 'en'; //default
    }
    
    /**
     * Return current language
     * @return  string
     */
    public function render()
    {
        return $this->getLanguage();
    }
}

Which I use in the fluid template as follows.

<f:alias map="{isGerman: 'de'}">
    <f:if condition="{aboUnitReservation:language()} == {isGerman}">
        <script type="text/javascript" src="{f:uri.resource(path:'js/jquery.ui.datepicker-de-CH.js')}"></script>
    </f:if>
</f:alias>

Answer 1

You can just assign variable in your action:

$this->view->assign("sysLanguageUid", $GLOBALS['TSFE']->sys_language_uid);

and then read it in your view:

<f:if condition="{sysLanguageUid} == 0">
    You're reading English version of page
</f:if>

on the other hand it would be easier and more comfortable to assign redy-to-use variable in controller as <f:if ...> block is quite simple and sometimes just uncomfortable:

switch ($GLOBALS['TSFE']->sys_language_uid) {
    case 1:
        $msg = "Bienvenidos";
        break;
    case 2:
        $msg = "Willkommen";
        break;
    default:
        $msg = "Welcome";
        break;
}

$this->view->assign("myMessage", $msg);