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import functools
from django.conf import settings
from django.urls import LocalePrefixPattern, URLResolver, get_resolver, path
from django.views.i18n import set_language
def i18n_patterns(*urls, prefix_default_language=True):
"""
Add the language code prefix to every URL pattern within this function.
This may only be used in the root URLconf, not in an included URLconf.
"""
if not settings.USE_I18N:
return list(urls)
return [
URLResolver(
LocalePrefixPattern(prefix_default_language=prefix_default_language),
list(urls),
)
]
@functools.cache
def is_language_prefix_patterns_used(urlconf):
"""
Return a tuple of two booleans: (
`True` if i18n_patterns() (LocalePrefixPattern) is used in the URLconf,
`True` if the default language should be prefixed
)
"""
for url_pattern in get_resolver(urlconf).url_patterns:
if isinstance(url_pattern.pattern, LocalePrefixPattern):
return True, url_pattern.pattern.prefix_default_language
return False, False
urlpatterns = [
path("setlang/", set_language, name="set_language"),
]
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