Utilities for using Babel in Django, without and upper Django version constraint.
Tools for using Babel with Django
- A message extraction plugin for Django templates.
- A middleware class that adds the Babel Locale object to requests.
- A set of template tags for date and number formatting.
This is a hard fork of django-babel
Babel provides a message extraction framework similar to GNU xgettext, but more extensible and geared towards Python applications. While Django does provide wrapper scripts for making the use of xgettext more convenient, the extraction functionality is rather limited. For example, you can’t use template files with an extension other than .html, and everything needs to be in your project package directory.
Extraction Method Mapping
So django-babel comes with an extraction method plugin that can extract localizable messages from Django template files. Python is supported out of the box by Babel. To use this extraction functionality, create a file called babel.cfg in your project directory (the directory above your project package), with the content:
[django: templates/**.*] [django: mypkg/*/templates/**.*] [python: mypkg/**.py]
This instructs Babel to look for any files in the top-level templates directory, or any files in application templates directories, and use the extraction method named “django” to extract messages from those template files. You’ll need to adjust those glob patterns to wherever you my be storing your templates.
Also, any files with the extension .py inside your package directory (replace “mypkg” with the actual name of your Django project package) are processed by the “python” extraction method.
If you don’t use setuptools, or for some reason haven’t installed django-babel using setuptools/pip, you’ll need to define what function the extraction method “django” maps to. This is done in an extra section at the top of the configuration file:
[extractors] django = django_babel.extract:extract_django
The encoding of the templates is assumed to be UTF-8. If you are using a different encoding, you will need to specify it in the configuration. For example:
[django: templates/**.*] encoding = iso-8859-1
Running the Extraction Process
Once you’ve set up the configuration file, the actual extraction is performed by executing the command-line program pybabel which is installed alongside the Babel package:
$ cd projectdir $ pybabel extract -F babel.cfg -o mypkg/locale/django.pot .
This creates the PO file template in mypkg/locale/django.pot.
Creating and Updating Translations Catalogs
If you don’t already have translation catalogs, you need to create them. This is done using the pybabel init command:
$ pybabel init -D django -i mypkg/locale/django.pot -d mypkg/locale -l en_US $ pybabel init -D django -i mypkg/locale/django.pot -d mypkg/locale -l de_DE
This should create two files: mypkg/locale/en_US/django.po and mypkg/locale/de_DE/django.po. These files are where you put the actual translations.
When you modify your Python source files or your templates, you genereally need to sync the translation catalogs. For that, you first perform a fresh extraction as described in the previous section, so that the django.pot file gets updated.
Then, you run the pybabel update command to merge the changes into the translation catalogs:
`bash $ pybabel update -D django -i mypkg/locale/django.pot -d mypkg/locale `
This will update all the .po files found in the mypkg/locale directory.
Compiling Translations Catalogs
Finally, you need to compile those .po files to binary .mo files. Use the pybabel compile command for that:
$ pybabel compile -D django -d mypkg/locale
Add the --statistics option to get information about the completeness of your translations:
$ pybabel compile -D django -d mypkg/locale --statistics
Much of the above process can be automated if you add a setup.py script to your project and use the distutils/setuptools commands that come with Babel. This is described at Distutils/Setuptools Integration.
Using the Middleware
To use the Babel middleware, add it to the list of MIDDLEWARE_CLASSES in your settings module. If you’re also using Django’s own LocaleMiddleware to vary the locale based on user preference, the Babel middleware must be inserted after the Django one:
MIDDLEWARE_CLASSES = ( ... 'django.middleware.locale.LocaleMiddleware', 'django_babel.middleware.LocaleMiddleware', ... )
This adds a locale attribute to the request object, which is an instance of the Babel Locale class. You can access the locale via request.locale when the request object is available, or otherwise use the django_babel.middleware.get_current_locale() function to get the current locale from a thread-local cache.
0.6.2 - 2017-07-20
- compatibility with Django 2.0 and up added
0.6.1 - 2017-07-20
- compatibility with Django 1.11 added
0.6.0 - 2017-04-25
- compatibility with unsupported Django versions (<1.8) is dropped
- compatibility with Django 1.10+ middlewares was added
0.5.1 - 2016-03-30
- make imports absolute in babel templatetags
- strip quotes from translations via _()
- fix links in docs
- Add support for “trimmed” blocktrans content
0.5.0 - 2016-02-29
- Add compatibility for Django-1.9
0.4.0 - 2015-04-22
- Add compatibility for Django 1.8
- Add compatibility for latest django master
- Various python 3 fixes
0.3.9 - 2014-12-24
- Fix dependencies on Django/Babel to use lower-case egg names.
0.3.8 - 2014-10-14
- Fix old reference to babeldjango module in entry points.
0.3.7 - 2014-10-14
- Fix Python 3.x compatibility in babel makemessages command.
0.3.6 - 2014-10-05
- Django 1.7 compatibility
0.3.5 - 2014-09-10
- Create .po and .pot files if not existing, plus it’s specific base directories.
0.3.4 - 2014-05-25
- Fixed django compatibility
0.3.3 - 2014-04-22
- Fixed release builds
0.3.2 - 2014-04-22
- Initial testing infrastructure
- Add management command babel with makemessages and compilemessages labels. Mimics django’s makemessages and compilemessages commands.
- Various unicode fixes
0.3.1 - 2013-12-11
- fix relative import in template tags
0.3.0 - 2013-12-11
- Rename package to django_babel
0.2.3 - 2013-12-11
- Rename package on PyPI
- Use GitHub as source control
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