language-menu data processor 

The processor \TYPO3\CMS\Frontend\DataProcessing\LanguageMenuProcessor , alias language-menu, generates a list of language menu items which can be assigned to the FLUIDTEMPLATE as a variable.

Table of contents

Options: 

if
if
Type
if condition

Only if the condition is met the data processor is executed.

languages
languages
Type
string / stdWrap
Default
"auto"
Example
"0,1,2"

A list of comma-separated language IDs (e.g. 0,1,2) to use for the menu creation or auto to load from the site configuration.

addQueryString.exclude
addQueryString.exclude
Type
string / stdWrap
Default
""
Example
"gclid,contrast"

A list of comma-separated parameter names to be excluded from the language menu URLs.

as
as
Type
string
Default
defaults to the fieldName

The variable name to be used in the Fluid template.

Example: Menu of all language from site configuration 

Please see also About the examples.

TypoScript

Using the LanguageMenuProcessor the following scenario is possible:

EXT:examples/Configuration/TypoScript/DataProcessors/Processors/LanguageMenuProcessor.typoscript
tt_content {
  examples_dataproclang =< lib.contentElement
  examples_dataproclang {
    templateName = DataProcLangMenu
    dataProcessing.10 = language-menu
    dataProcessing.10 {
      languages = auto
      as = languageNavigation
    }
  }
}
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The Fluid template

This generated menu can be used in Fluid like this:

EXT:examples/Resources/Private/Templates/ContentElements/DataProcLangMenu.fluid.html
<html data-namespace-typo3-fluid="true" xmlns:f="http://typo3.org/ns/TYPO3/CMS/Fluid/ViewHelpers">
  <h2>Data in variable languageNavigation</h2>
  <f:debug inline="true">{languageNavigation}</f:debug>

  <h2>Output</h2>
  <f:if condition="{languageNavigation}">
    <ul id="language" class="language-menu">
      <f:for each="{languageNavigation}" as="item">
        <li class="{f:if(condition: item.active, then: 'active')}
            {f:if(condition: item.available, else: ' text-muted')}">
          <f:if condition="{item.available}">
            <f:then>
              <a href="{item.link}" hreflang="{item.hreflang}"
                title="{item.navigationTitle}">
                <span>{item.navigationTitle}</span>
              </a>
            </f:then>
            <f:else>
              <span>{item.navigationTitle}</span>
            </f:else>
          </f:if>
        </li>
      </f:for>
    </ul>
  </f:if>

</html>
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Output

The array now contains information on all languages as defined in the site configuration. As the current page is not translated into German, the German language has the item.available set to false. It therefore does not get linked in the template.

Output of a LanguageMenuProcessor, including debug output