def _add_language_filter(self):
if self._language_filter_tag: # pragma: no cover
raise RuntimeError(
'Queryset is already tagged. This is a bug in hvad')
self._language_filter_tag = True
self.query.language_code = self._language_code
if self._language_code == 'all':
self._add_select_related()
elif self._language_fallbacks:
if self._raw_select_related:
raise NotImplementedError('Using select_related along with '
'fallbacks() is not supported')
languages = tuple(get_language() if lang is None else lang
for lang in (self._language_code, ) +
self._language_fallbacks)
masteratt = self.model._meta.get_field('master').attname
alias = self.query.join(
Join(self.model._meta.db_table, self.query.get_initial_alias(),
None, LOUTER,
BetterTranslationsField(languages,
master=masteratt), True))
add_alias_constraints(self, (self.model, alias), id__isnull=True)
self.query.add_filter(('%s__isnull' % masteratt, False))
if not self._skip_master_select and getattr(self, '_fields',
None) is None:
self.query.add_select_related(('master', ))
else:
language_code = self._language_code or get_language()
self.query.add_filter(('language_code', language_code))
self._add_select_related()
# if queryset is about to use the model's default ordering, we
# override that now with a translated version of the model's ordering
if self.query.default_ordering and not self.query.order_by:
ordering = self.shared_model._meta.ordering
self.query.order_by = self._translate_fieldnames(ordering or [])
return self
def _add_language_filter(self):
if self._language_filter_tag: # pragma: no cover
raise RuntimeError('Queryset is already tagged. This is a bug in hvad')
self._language_filter_tag = True
if self._language_code == 'all':
self._add_select_related(F('language_code'))
elif self._language_fallbacks:
if self._raw_select_related:
raise NotImplementedError('Using select_related along with '
'fallbacks() is not supported')
languages = tuple(get_language() if lang is None else lang
for lang in (self._language_code,) + self._language_fallbacks)
masteratt = self.model._meta.get_field('master').attname
alias = self.query.join(Join(
self.model._meta.db_table,
self.query.get_initial_alias(),
None,
LOUTER,
BetterTranslationsField(languages, master=masteratt),
True
))
add_alias_constraints(self, (self.model, alias), id__isnull=True)
self.query.add_filter(('%s__isnull' % masteratt, False))
if not self._skip_master_select and getattr(self, '_fields', None) is None:
self.query.add_select_related(('master',))
else:
language_code = self._language_code or get_language()
self.query.add_filter(('language_code', language_code))
self._add_select_related(language_code)
# if queryset is about to use the model's default ordering, we
# override that now with a translated version of the model's ordering
if self.query.default_ordering and not self.query.order_by:
ordering = self.shared_model._meta.ordering
self.query.order_by = self._translate_fieldnames(ordering or [])
return self
