Templating Multi-language info
This page shows you how to access the language code and alternate language versions of a document.
Here is how to access the language code of a document queried from your prismic.io repository. This might give "en-us" (American english), for example.
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document.lang
Next we will access the information about a document's alternate language versions. You can loop through the alternate_languages array and access the id, uid, type, and language code of each as shown below.
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document.alternate_languages.forEach(function(altLang){
var id = altLang.id;
var uid = altLang.uid;
var type = altLang.type;
var lang = altLang.lang;
});