def test_meta_field_finder(self):
"""The correct localised version of the title property should be found"""
field = meta_utils.get_localized_property(self, 'title')
assert (field == self.title_en)
translation.activate('de')
field = meta_utils.get_localized_property(self, 'title')
assert (field == self.title_de)
def test_meta_field_finder(self):
"""The correct localised version of the title property should be found"""
field = meta_utils.get_localized_property(self, 'title')
assert(field == self.title_en)
translation.activate('de')
field = meta_utils.get_localized_property(self, 'title')
assert(field == self.title_de)
def __get__(self, obj, typ=None):
"""
Read the localised version of the field this descriptor emulates.
First try to see if the localised field is really set.
If not, then use ugettext_lazy to find a tranlation in the current language
for this field.
"""
# self must be returned in a getattr context.
if obj is None:
return self
current_language = translation.get_language()
real_field_name = get_real_fieldname(self.name, current_language)
vo = GettextVO()
# first check if the database contains the localized data
vo.stored_value = getattr(obj, real_field_name)
if getattr(settings, 'I18N_NOFALLBACK', False):
return vo.stored_value
# the database does not have our localized data.
# check if we have a translation, first get the msgid, as a unicode string.
vo.msgid = get_localized_property(
obj, self.name,
getattr(settings, 'MSGID_LANGUAGE', settings.LANGUAGE_CODE))
# check the translation in the current language
# but avoid empty string and None
if valid_for_gettext(vo.msgid):
vo.msg = self.to_python(
translation.ugettext(force_unicode(vo.msgid)))
elif valid_for_gettext(vo.stored_value):
# we can not use the msgid for gettext but we did find a valid
# translation in the database. Fine we stop here and return that
# value. No need for a standin, because we don't have a catalog value.
return vo.stored_value
else:
# we can not use the msgid for gettext lookups, so there is no
# point in trying. Check for fallback languages in database.
vo.fallback = get_localized_property(obj, self.name)
if not valid_for_gettext(vo.fallback):
# Also if we are sure we don't have any old
# translations in the catalog or something for the fallback
# languages in the database, we do not need to return a standin either
return vo.msgid
# we got here so we've got a valid messageid. Now collect data from the catalog(s)
# if there isn't anything new in the catalog belonging to the current language:
if vo.msg == vo.msgid:
# maybe we have a translation in any of the fallback languages.
if hasattr(settings, 'FALLBACK_LANGUAGES'):
# first check if the database has the localized data in
# any of the fallback languages.
vo.fallback = get_localized_property(obj, self.name)
# if the fallback is the same as the msgid, go and look in the catalog
if vo.fallback == vo.msgid:
# there might be a translation in any
# of the fallback languages.
for fallback in get_fallback_languages():
catalog = translation_catalogs(fallback)
msg = catalog.ugettext(force_unicode(vo.msgid))
if self.to_python(msg) != vo.msgid:
vo.fallback = self.to_python(msg)
break
elif vo.fallback:
# if a valid fallback is found, then, since the msg is equal
# to the msgid, the fallback is the winner.
vo.msg = vo.fallback
# if we came here we collected data from the catalog and we should return
# a standin. A standin is the return value, with some extra properties.
# see GettextVO for the extra properties added.
if valid_for_gettext(vo.stored_value):
vo.standin_value_is_from_database = True
# database always wins
return standin_for(vo.stored_value, **vo.__dict__)
elif valid_for_gettext(vo.msg):
# runner up is the translation in the native language
return standin_for(vo.msg, **vo.__dict__)
elif valid_for_gettext(vo.fallback):
# and last is the translation in a fallback language
return standin_for(vo.fallback, **vo.__dict__)
assert (valid_for_gettext(vo.msgid))
# there is a very very small probability that the translation of
# a valid msgid evaluates to empty string or None (after to_python).
# If that happened, we got here. I choose to return None, because i like
# to be like that
return None
def __get__(self, obj, typ=None):
"""
Read the localised version of the field this descriptor emulates.
First try to see if the localised field is really set.
If not, then use ugettext_lazy to find a tranlation in the current language
for this field.
"""
# self must be returned in a getattr context.
if obj is None:
return self
current_language = translation.get_language()
real_field_name = get_real_fieldname(self.name, current_language)
vo = GettextVO()
# first check if the database contains the localized data
vo.stored_value = getattr(obj, real_field_name)
# the database does not have our localized data.
# check if we have a translation, first get the msgid, as a unicode string.
vo.msgid = get_localized_property(obj, self.name, getattr(settings, 'MSGID_LANGUAGE', settings.LANGUAGE_CODE))
# check the translation in the current language
# but avoid empty string and None
if valid_for_gettext(vo.msgid):
vo.msg = self.to_python(translation.ugettext(force_unicode(vo.msgid)))
elif valid_for_gettext(vo.stored_value):
# we can not use the msgid for gettext but we did find a valid
# translation in the database. Fine we stop here and return that
# value. No need for a standin, because we don't have a catalog value.
return vo.stored_value
else:
# we can not use the msgid for gettext lookups, so there is no
# point in trying. Check for fallback languages in database.
vo.fallback = get_localized_property(obj, self.name)
if not valid_for_gettext(vo.fallback):
# Also if we are sure we don't have any old
# translations in the catalog or something for the fallback
# languages in the database, we do not need to return a standin either
return vo.msgid
# we got here so we've got a valid messageid. Now collect data from the catalog(s)
# if there isn't anything new in the catalog belonging to the current language:
if vo.msg == vo.msgid:
# maybe we have a translation in any of the fallback languages.
if hasattr(settings, 'FALLBACK_LANGUAGES'):
# first check if the database has the localized data in
# any of the fallback languages.
vo.fallback = get_localized_property(obj, self.name)
# if the fallback is the same as the msgid, go and look in the catalog
if vo.fallback == vo.msgid:
# there might be a translation in any
# of the fallback languages.
for fallback in get_fallback_languages():
catalog = translation_catalogs(fallback)
msg = catalog.ugettext(force_unicode(vo.msgid))
if self.to_python(msg) != vo.msgid:
vo.fallback = self.to_python(msg)
break
elif vo.fallback:
# if a valid fallback is found, then, since the msg is equal
# to the msgid, the fallback is the winner.
vo.msg = vo.fallback
# if we came here we collected data from the catalog and we should return
# a standin. A standin is the return value, with some extra properties.
# see GettextVO for the extra properties added.
if valid_for_gettext(vo.stored_value):
vo.standin_value_is_from_database = True
# database always wins
return standin_for(vo.stored_value, **vo.__dict__)
elif valid_for_gettext(vo.msg):
# runner up is the translation in the native language
return standin_for(vo.msg, **vo.__dict__)
elif valid_for_gettext(vo.fallback):
# and last is the translation in a fallback language
return standin_for(vo.fallback, **vo.__dict__)
assert(valid_for_gettext(vo.msgid))
# there is a very very small probability that the translation of
# a valid msgid evaluates to empty string or None (after to_python).
# If that happened, we got here. I choose to return None, because i like
# to be like that
return None
