private function serializeRequest(Request $request)
{
return $this->serializeLanguageParams($request->getLanguageTag(), $request->getLanguage(), $request->getScript(), $request->getRegion(), $request->getVariantsTag(), $request->getVariants(), $request->getExtensionsTag(), $request->getExtensions());
}
/**
* Returns the appropriate fallback language chain for a given language.
*
* In other words, if a system has the available languages as en-CA, en-US, de-DE
* Default language is de-DE
* And a user requests en-SG; this will return array(en-CA, en-US, de-DE).
* If a user requests fi-FI; will return array(de-DE)
*
* TODO: Use External Locale Provider
* @param string $language
* @return string[]
*/
private function resolveLanguageChain($language)
{
$resolvedLanguage = $this->resolveLanguage($language);
if (isset($this->languageResolutionChain[$resolvedLanguage])) {
return $this->languageResolutionChain[$resolvedLanguage];
}
$chain = array();
$request = new Request('na', $language);
$chain[] = $request->getLanguageTag();
$chain[] = implode('-', array_filter(array($request->getLanguage(), $request->getScript(), $request->getRegion())));
$chain[] = implode('-', array_filter(array($request->getLanguage(), $request->getRegion())));
$chain[] = implode('-', array_filter(array($request->getLanguage(), $request->getScript())));
$chain[] = implode('-', array_filter(array($request->getLanguage())));
$chain[] = $this->getOptions()->getFallbackLanguage();
$chain = array_filter(array_unique($chain));
return $chain;
}