I'm not 100% firm in this area but I believe that the user's locale gets stored in the ThreadLocale
service. This service is responsible for storing the current thread's locale, i.e. the locale for
which pages, messages etc. are being generated. The locale in ThreadLocale gets set by a combination
of various other services.
One of them is the PersistentLocale service. If you call persistentLocale.set(locale) a cookie is
sent to the browser storing the desired locale. If you call persistentLocale.get() that value is
read and returned. If no cookie has been set, this will be null. You can check that with
persistentLocale.isSet().
persistentLocale.set() also overwrites the locale in the ThreadLocale service. If the desired locale
is not in supported-locales, Tapestry chooses the nearest matching locale. Thus, querying the
ThreadLocale service will give you the locale that Tapestry has chosen to generate pages, messages
etc. in, taking into account PersistentLocale's value as well as the Request's locale.
So there are 3 ways to get the locale:
- request.getLocale() will give you the locale, that the browser sent
- persistentLocale.get() will give you the locale stored in a cookie in the user's browser or null,
if no cookie is set
- threadLocale.getLocale() will give you the locale choosen by Tapestry, taking into account the
Request's locale, PersistentLocale's locale (will be chosen over the Request's locale) and
supported-locales.
HTH.
Cheers,
Uli
José Paumard schrieb:
Hello all,
I know this looks like a faq, but to be sure, is T5 supposed to set the
current locale (the one we get by calling persistentLocale.get()) on
each request, and does it work ? My problem is that I get null when I
call persistentLocale.get(), with a locale set when I call
request.getLocale(), and corresponding to a declared locale in
tapestry.supported-locale. Am I missing something ?
Any info would be much appreciated,
José
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