Use fallbackLanguage when using determinePreferredLanguage

When I use determinePreferredLanguage I would like to use fallbackLanguage or any other special defined fallback when determine methods retruns locale code which is not in my available langague keys.

@PascalPrecht is there any way to achive that?

For now I defined smth like this:

$translateProvider.useStaticFilesLoader({
    prefix: 'resources/translations/',
    suffix: '.json'
});
$translateProvider.useLocalStorage();
$translateProvider.useMissingTranslationHandlerLog();
$translateProvider.registerAvailableLanguageKeys(
    ['pl', 'en'],
    {
        'en*': 'en',
        'pl*': 'pl',
        '*': 'en' // must be last!
    }
);
$translateProvider.fallbackLanguage('en');
$translateProvider.determinePreferredLanguage();

and it works well, but it will be better to define it 😃

[tandibar]

Ok, but if i call determinePreferedLanguage() it will internally set the language to the determined language, or am I wrong? It will at least set what is returned by $translateProvider.preferredLanguage().

I had a problem with this code:

$translateProvider
  // see: http://angular-translate.github.io/docs/#/guide/09_language-negotiation
  .registerAvailableLanguageKeys(['en', 'de'], {
    'en_US': 'en',
    'en_UK': 'en',
    'de_DE': 'de',
    'de_CH': 'de'
    })
  .determinePreferredLanguage();

  // interpolation for pluralization
  $translateProvider.addInterpolation('$translateMessageFormatInterpolation');

In a polish Browser the last line will fail with Plural Function not found for locale: pl_PL which leads me to the assumption that determinePreferredLanguage() is setting something internally. If I change the code to (as suggested by @mrzepinski):

$translateProvider
// see: http://angular-translate.github.io/docs/#/guide/09_language-negotiation
.registerAvailableLanguageKeys(['en', 'de'], {
  'en_US': 'en',
  'en_UK': 'en',
  'de_DE': 'de',
  'de_CH': 'de',
  '*': 'en'
  })
.fallbackLanguage('en')
.determinePreferredLanguage();

// interpolation for pluralization
$translateProvider.addInterpolation('$translateMessageFormatInterpolation');

everything works fine. So in this case determinePreferredLanguage() will not return or set pl.

[knalli]

A preferred language is the requested language one, but not an actual available or selected one.