I do this with python 2.7 + Jinja2 with messages.po files. The same
app<http://classifiedsmarket.appspot.com>can serve a Brazilian
domain in Brazilian Portuguese <http://www.montao.com.br> and an Indian
domain in plain English <http://www.koolbusiness.com>.
I don't use namespaces for this however since namespaces AFAIK you can only
select one while a sometimes want to display for all "namespaces" (domains)
So I do the localization low-level and I must also think of that decimal
formatting, date formatting and timezones differ within my app and it's
this that I'm nowadays working on a solution for.
The library I use for internationalization is the i18n from webapp2_extras
and the undocumented approach I use is loading i18n to the Jinja2 library:
jinja_environment.install_gettext_translations(i18n)
Then my logic is basically just checking the host for the domain
host = self.request.host
if host.find('.br') > 0:
i18n.get_i18n().set_locale('pt-br')
#otherwise default to English
You can get language / locale from HTTP get, HTTP session, HTTP header och
cookie and I posted on
SO<http://stackoverflow.com/questions/8514017/how-to-decide-the-language-from-cookies-headers-session-in-webapp2>about
it.
When you know serverside what locale it is, you also pass it on via
javascript to the javascript components if you have.
Thank you
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