Turbogears i18n pains

Polž — Mon, 19 Jan 2009 11:37:20 GMT

The final problem I have run into with TurboGears is the poor documentation regarding i18n with Genshi templates. The only way I have been able to get gettext to work for this blog was by using sourcecode from Transifex. To get i18n to work with genshi templates, I added this to config/app.cfg:

session_filter.on = True
i18n.run_template_filter = True

i18n.domain = "cblog"
i18n.locale_dir = "locales/"
i18n.po_view_dir = "locales/view/"

i18n.locale_dir = "locales/"

and this to controllers.py:

# i18n support
from turbogears.i18n import gettext
from genshi.filters import Translator
import turbogears.view

def genshi_loader_callback(template):
    template.filters.insert(0, Translator(gettext))

def init_callback():
    turbogears.view.engines['genshi'].loader.callback = genshi_loader_callback

turbogears.startup.call_on_startup.append( init_callback )

config.update({'genshi.loader_callback': genshi_loader_callback})

# i18n support - end

To create the translation files, I followed the instructions from the Genshi i18n page. First, I created a mappings.cfg file containing:

# Extraction from Python source files
[python: **.py]
# Extraction from Genshi HTML and text templates
[genshi: **/templates/**.html]

And then ran:

pybabel extract -o locales/cblog.pot -F ./mappings.cfg cblog
pybabel init -D cblog -i locales/cblog.pot -d locales/ -l en # for the english language
pybabel compile -D cblog -d locales/ -f --statistics

Unfortunately, in order for the changes to the translated strings to take effect, the application needs to be restarted. The need to restart the server each time a translated string changes seems silly. Also, I spent more than 3 days hunting for documentation on how to actually get the i18n to work. Hopefully, doing the same with Django will be less painful.

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Better templates using gettext

Polž — Mon, 19 Jan 2009 10:31:54 GMT

which is supposed to produce "category" if there is exactly one category and "categories" if there are multiple categories.

There is a better way to handle this, which is to use the ngettext function. Like this::: ${ngettext("%d category", "%d categories", numtags) % numtags}

By using ngettext it becomes possible to translate the blog into languages where counting is done differently than in English. Which is what I intend to do next.

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Gladko kot po sluzi (gettext)

Turbogears i18n pains

Better templates using gettext