mirror of
https://github.com/Hopiu/django-modeltranslation.git
synced 2026-04-09 00:00:58 +00:00
96 lines
3.2 KiB
Python
96 lines
3.2 KiB
Python
# -*- coding: utf-8 -*-
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from django.utils.encoding import force_unicode
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from django.utils.translation import get_language as _get_language
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from django.utils.functional import lazy
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from modeltranslation import settings
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def get_language():
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"""
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Return an active language code that is guaranteed to be in
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settings.LANGUAGES (Django does not seem to guarantee this for us).
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"""
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lang = _get_language()
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if lang not in settings.AVAILABLE_LANGUAGES and '-' in lang:
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lang = lang.split('-')[0]
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if lang in settings.AVAILABLE_LANGUAGES:
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return lang
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return settings.DEFAULT_LANGUAGE
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def get_translation_fields(field):
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"""
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Returns a list of localized fieldnames for a given field.
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"""
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return [build_localized_fieldname(field, l) for l in settings.AVAILABLE_LANGUAGES]
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def build_localized_fieldname(field_name, lang):
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return str('%s_%s' % (field_name, lang.replace('-', '_')))
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def _build_localized_verbose_name(verbose_name, lang):
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return u'%s [%s]' % (force_unicode(verbose_name), lang)
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build_localized_verbose_name = lazy(_build_localized_verbose_name, unicode)
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def _join_css_class(bits, offset):
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if '-'.join(bits[-offset:]) in settings.AVAILABLE_LANGUAGES + ['en-us']:
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return '%s-%s' % ('_'.join(bits[:len(bits) - offset]), '_'.join(bits[-offset:]))
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return ''
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def build_css_class(localized_fieldname, prefix=''):
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"""
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Returns a css class based on ``localized_fieldname`` which is easily
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splitable and capable of regionalized language codes.
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Takes an optional ``prefix`` which is prepended to the returned string.
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"""
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bits = localized_fieldname.split('_')
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css_class = ''
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if len(bits) == 1:
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css_class = str(localized_fieldname)
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elif len(bits) == 2:
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# Fieldname without underscore and short language code
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# Examples:
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# 'foo_de' --> 'foo-de',
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# 'bar_en' --> 'bar-en'
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css_class = '-'.join(bits)
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elif len(bits) > 2:
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# Try regionalized language code
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# Examples:
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# 'foo_es_ar' --> 'foo-es_ar',
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# 'foo_bar_zh_tw' --> 'foo_bar-zh_tw'
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css_class = _join_css_class(bits, 2)
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if not css_class:
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# Try short language code
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# Examples:
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# 'foo_bar_de' --> 'foo_bar-de',
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# 'foo_bar_baz_de' --> 'foo_bar_baz-de'
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css_class = _join_css_class(bits, 1)
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return '%s-%s' % (prefix, css_class) if prefix else css_class
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def unique(seq):
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"""
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>>> list(unique([1, 2, 3, 2, 2, 4, 1]))
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[1, 2, 3, 4]
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"""
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seen = set()
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return (x for x in seq if x not in seen and not seen.add(x))
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def resolution_order(lang, override=None):
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"""
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Return order of languages which should be checked for parameter language.
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First is always the parameter language, later are fallback languages.
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Override parameter has priority over FALLBACK_LANGUAGES.
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"""
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if override is None:
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override = {}
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fallback_for_lang = override.get(lang, settings.FALLBACK_LANGUAGES.get(lang, ()))
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fallback_def = override.get('default', settings.FALLBACK_LANGUAGES['default'])
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order = (lang,) + fallback_for_lang + fallback_def
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return tuple(unique(order))
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