if Key does n't present in the set language file, get it from the default language bundle.

[Arunachalam]

Hi,

I've two language resource files(en_US, de_DE.json) & mentioned default language as "en_US" in the i18n configure file.

Configuration i18n.configure({
locales:['en_US', 'de_DE'],
defaultLocale: 'en_US', });

en_US.json { "name": "hello david", "age": 20 }

de_DE.json {
"age": 30 }

I am setting a locale as "de_DE" using by setLocale method. i18n.setLocale('de_DE');

Translate Message ('name'); or req.('name');

Here the "name" key doesn't present in de_DE language file. we're expecting to get it from the default language file, because it was present in the en_US file & file/key not present in the application, it will get it from the default language file.

How do we achieve/get it? if Key does n't present in the set language file, get it from the default language bundle.

Please provide an answer with full information to us.

[cooljeffro]

As a workaround, I modify the language object by merging the default language into it, for each language. Using lodash here.

function setFallbackLang(fallbackLang) {
  const i18nCatalog = i18n.getCatalog();
  _.each(i18nCatalog, (translations, lang) => {
    i18nCatalog[lang] = _.mergeWith({}, i18nCatalog[fallbackLang], i18nCatalog[lang], function(value, srcValue, key, object, src) {
      // use default language value if srcValue is undefined or empty string
      if (srcValue === '')
        return value;
    });
  });
}

i18n.configure(config.i18n);
setFallbackLang('en');
app.use(i18n.init);