Wrapper around modeltranslation package, adding nice features.
This package is a bunch of patches for django-modeltranslation (http://code.google.com/p/django-modeltranslation/, http://pypi.python.org/pypi/django-modeltranslation/), which can enhance usage of this nice app and target some annoying aspects.
Two features were added:
autodiscover of translation.py files within apps
intelligent manager: filtering, ordering, creating and so on takes current language into consideration
(This feature was mainly ported from django-linguo (https://github.com/zmathew/django-linguo, http://pypi.python.org/pypi/django-linguo), another good app. However, modeltranslation idea of
translation fieldsregistration is better than linguo model code edition - especially with 3rd-party apps)
Later, modeltranslation will be referred as
MT, and django-modeltranslation-wrapper as
This app changes the way that the translation files are sought for. In
MT, you have
just one file per project.
Wrapper makes it more like in the admin: every application in
INSTALLED_APPS is examined and its translation.py is imported (if present).
Moreover, if you still want to include some non-app translations (e.g. translation for 3rd-party apps), there is new setting introduced: MODELTRANSLATION_TRANSLATION_FILES. It should contain list of additional modules (containing translations) to import.
So, when using
Wrapper, the MODELTRANSLATION_TRANSLATION_REGISTRY setting is unnecessary.
For backward compatibility with
MT, when MODELTRANSLATION_TRANSLATION_REGISTRY is present,
it is treated as if it was listed in MODELTRANSLATION_TRANSLATION_FILES. So no changes are
required in existing projects using
Wrapper changes managers in translatable models so that they are aware of active language in their
operations. That means, unsuffixed attributes parameters are rewritten to the suffixed versions.
These statements give the same results, assuming current active language is pl:
X.objects.filter(foo='bar') X.objects.filter(foo_pl='bar') activate('de') X.objects.filter(foo_pl='bar') # Still the same result
If the translatable model has own custom manager, intelligent manager will be gently added, retaining old functions.
The X.objects.create() is special case, however. For backward compatibility it works as in
default. But you can pass parameter _populate=True to populate suffixed fields with
values from unsuffixed ones.
Example will clarify it:
x = X.objects.create(foo='bar', _populate=True)
is equivalent of:
x = X.objects.create(foo_en='bar', foo_pl='bar', ... , foo_zu='bar')
x = X.objects.create(foo='bar') x.foo_en = 'bar' x.foo_pl = 'bar' ... x.foo_zu = 'bar' x.save()
Moreover, some field can be explicitly assigned different value:
x = X.objects.create(foo='-- no translation yet --', foo_pl='nic', _populate=True)
It will result in foo_pl == 'nic' and other foo_?? == '-- no translation yet --'.
There is more convenient way than passing _populate all the time: MODELTRANSLATION_AUTO_POPULATE setting. If _populate parameter is missing, create() will look at the setting to determine if population should be used.
This useful feature is disabled by default for backward compatibility with
However, if your code doesn’t heavily rely on the fact that create() set None on suffixed fields,
it is advised to set MODELTRANSLATION_AUTO_POPULATE = True.
List of additional translation modules to import.
This setting control if X.objects.create() function should populate language fields values.
$ pip install django-modeltranslation-wrapper
or download it manually and put in python path.
Add modeltranslation_wrapper to INSTALLED_APPS before plain modeltranslation:
INSTALLED_APPS = ( ... 'modeltranslation_wrapper', 'modeltranslation', ... )
Optionally, specify MODELTRANSLATION_TRANSLATION_FILES in settings:
MODELTRANSLATION_TRANSLATION_FILES = ( 'myproject.flatpages_translation', 'myproject.foo_translation', )
These modules will be imported in addition to autodiscovered ones.
Optionally, specify MODELTRANSLATION_AUTO_POPULATE (see above):
MODELTRANSLATION_AUTO_POPULATE = True
Zach Mathew (of django-linguo)
For details see AUTHORS file.
1.1 of 04/09/2012
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