Re: [FE-discuss] German messages

Shannon -jj Behrens wrote:
> I had to support this in FormValid, Aquarium's form validation library
> (long story).  Here are some things to keep in mind when doing this in
> FormEncode:
> 
> o It's helpful to let the programmers easily pass in their own error
> messages.  That way they're in complete control of these sticky
> situations.

This is already handled, e.g., DateConverter(messages={'after': "I find 
it implausible you are more than 100 years old"}, 
earliest_date=datetime(1905, 1, 1)).

> o Remember that you can't use a global translation instance. 
> Eventually, you'll need to support more than one language at the same
> time.  In Aquarium, I handled this by attaching the translation
> instance to the context.  Each page request has its own context. 
> Hence, multiple users can use multiple languages at the same time.

You could use a threadlocal object to manage the locale, assuming a 
single request is handled solely by one locale, i.e., a single thread 
uses only one locale at a time.  Unless you are using single-process 
non-threaded serving like Nevow or somesuch.

But anyway, the state object can be passed into a validation, and 
arbitrary attributes can be attached to it.  So I'm guessing the locale 
should be determined with:

   locale = getattr(state, 'locale', None)

> o I personally would not want the FormEncode strings to have their own
> separate gettext domain.  Rather, I would scan FormEncode for
> translatable strings (using gettext, of course) and translate those
> alongside all my other application's strings.

Well, that's terminology I don't understand ;)  Does scanning produce 
.po files?  Can those be merged and extracted?

Eh, I don't know much about this stuff at all.

> o Consider passing in a translation instance to FormEncode.  You can
> use the NullTranslation as the default.

If that's more convenient, then it could be done with:

   translator = getattr(state, 'translator', NullTranslation)

-- 
Ian Bicking  /  ia...@co...  /  http://blog.ianbicking.org