如何在Django管理员中翻译模型的复数？

Question

I have a Django application with a model called Topic . I want to translate the plural of this model in the Django admin (see the red ellipse in the screenshot below).

In order to do this, I did following:

1) Added a Meta class to the model in models.py :

from django.utils.translation import ugettext_lazy as _

class Topic(models.Model):
    title = models.CharField(max_length=140)

    def __unicode__(self):
        return self.title
    class Meta:
        verbose_name = _('topic')
        verbose_name_plural = _('topics')

2) Ran django-admin.py makemessages -l ru-RU , which generated a file locale/ru/django.po .

3) Added translations to the django.po file:

msgid "topic"
msgstr "Тема"

msgid "topics"
msgstr "Темы"

4) Ran django-admin.py compilemessages .

5) Changed settings.py so that there are following settings there:

LANGUAGE_CODE = 'ru-RU'

ugettext = lambda s: s

LANGUAGES = (
  ('ru-RU', ugettext('Russian')),
)

MIDDLEWARE_CLASSES = (
    'django.middleware.common.CommonMiddleware',
    'django.contrib.sessions.middleware.SessionMiddleware',
    'django.contrib.auth.middleware.AuthenticationMiddleware',
    'django.contrib.messages.middleware.MessageMiddleware',
    'django.middleware.locale.LocaleMiddleware',
)

USE_I18N = True

USE_L10N = True

But it still doesn't work (the marked lettering in the admin still appears in English, not in Russian).

What can I do in order to fix this?

Update 1 (28.09.2013 13:26): Maybe something is wrong with my directory structure. Here it is:

Answer 1

1. Probably locale dir does not live in your app's directory or is not defined in LOCALE_PATHS . https://docs.djangoproject.com/en/dev/topics/i18n/translation/#how-django-discovers-translations

2. It should generate a file locale/ru-RU/LC_MESSAGES/django.po .

Answer 2

I think it's a better practice to add the app translations within the app folder itself, this makes it portable and easier to find. It may also help you with your problem.

Create a "locale" folder within your app:

my-site/opinions/locale/

Standing within your app folder, run the "django-admin.py makemessages -l ru-RU" comand. It should create the django.po file with the the needed translations in blank.

After you fill the missing translations, run "django-admin.py compilemessages" and restart your server just in case.

Also, in your settings.py file, don't use hard-coded strings for your folders, it's a better practice to get them dynamically

import os
PROJECT_ROOT = os.path.realpath(os.path.dirname(__file__))
LOCALE_PATHS = (os.path.join(PROJECT_ROOT, 'locale'), )

This last code will assume that the locale folder is with the settings.py file.

Answer 3

I tried Django 1.7.

I tried the same method, but didn't work at the first time, after some debugging into Django, I found some hints and found the solution, there should be some document in Django for locale names, actually there are some rules not documented.

And in my test, only messages under project can be loaded, all messages in app cannot be translated.

I tried print _("") in the same index() method in my app's view. only msgid in settings.py file can be translated.

The code looks like below:

def index(request):

print request.LANGUAGE_CODE
str_msg = _("Welcome to poll list!")   ## this keep English output, only appears in app
print str_msg
str_msg = _("Simplified Chinese")     ## this one worked, it appears in settings.py
print str_msg
context = {'latest_question_list': latest_question_list,
           'message': str_msg}
....

After checked the some Django code, I found it allowed only the locale names given under page

https://github.com/django/django/tree/master/django/conf/locale

Please note the directory names, there is no 'ru-RU', no 'zh-cn'.

code in gettext.py:

def translation(domain, localedir=None, languages=None,
                class_=None, fallback=False, codeset=None):
    if class_ is None:
        class_ = GNUTranslations
    mofiles = find(domain, localedir, languages, all=1)
    if not mofiles:
        if fallback:
            return NullTranslations()
        raise IOError(ENOENT, 'No translation file found for domain', domain)

I fixed my own problem by changing 'zh-cn' to 'zh_CN', then ran the following commands:

python manage.py makemessages -l zh_CN 

copied django.po file from folder '/zh-cn/LC_MESSAGES/' to folder '/zh_CN/LC_MESSAGES', to keep my translations.

python manage.py compilemessages

then,

python manage.py runserver

Now everything is OK!

So, I think to change from 'ru-RU' to 'ru' may solve your problem.