It is an improvement to the implementation of django gettext for javascrtipt.

• Now parse javascript teplates for translatable strings (tested with underscore.template)
• New I18n view more extensible (build on top of CBV) that exposes the djangojs gettext domain and djsgettext domain generated for translation scrings from js templates. Aditionaly the performance is improved with caching of this view (not supported by django view as default behavior).

Django makemesages command generates a djangojs domain po file from *.js files, django-jsgettext generates a djgettext domain po file from .html files (javascript templates) and a new django view exposes the two gettext domains to the javascript.

Currently, only is tested with underscore templates. Example:

<div><%= gettext('sample message') %></div>
<div><%= ngettext('1 message', 'some messages', num) %></div>
<div><%= interpolate(gettext('sample %s'), [1]) %></div>

Add the the I18N view to your urls.py. This view outputs javascript code with the translations:

from djsgettext.views import I18n

urlpatterns = patterns('',
    url(r'^js-gettext/$', I18n.as_view(), name="jsgettext"),
)

In your html code, include the javascript code that will bring the translations (this will include both djangojs and djangogettext catalogs, so it replaces django javascript gettext script):

<script type="text/javascript" src="{% url jsgettext %}"></script>

Now you can use function gettext, ngettext (for plurals), pgettext (for context), npgettext (for plurals with context) in your templates and javascript files.

Collect messages from templates:

python manage.py jsgettext_makemessages

Then compile messages as usual:

python manage.py compilemessages

Also note that the I18N view will be cached by default for 20 seconds. To avoid caching in debug mode, you can use the DummyCache in settings.py:

# No caching by default for development
if DEBUG:
    CACHES = {
        'default': {
            'BACKEND': 'django.core.cache.backends.dummy.DummyCache',
        }
    }

And you can modify the time the view is cached setting I18N_VIEW_CACHE_TIMEOUT in settings.py (in seconds):

# cache i18n for 15 mins
I18N_VIEW_CACHE_TIMEOUT = 60*15

You should also set the django apps for which you want the I18N view to output translated messages for in settings.py, using the standard LOCALE_PATHS variable:

LOCALE_PATHS = (
    os.path.join(ROOT_PATH, 'locale'),
)

You can also use this view in an isolated way or simply in a more custom manner setting the packages and/or domains parameters for the view in urls.py. Note that the locale paths will still be added to the list of packages:

from djsgettext.views import I18n

urlpatterns = patterns('',
    url(r'^js-gettext/$', I18n.as_view(packages=['someapp']), name="jsgettext"),
)