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Refined changes made in r12546 to also respect the request.LANGUAGE_C…

…ODE in case the LocaleMiddleware is used to discover the language preference.

git-svn-id: bcc190cf-cafb-0310-a4f2-bffc1f526a37
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commit 284e7e3cbdc1b0efb46f35485194d6a5f9b201dc 1 parent 68dd63b
@jezdez jezdez authored
19 django/utils/
@@ -25,7 +25,7 @@
from django.utils.encoding import smart_str, iri_to_uri
from django.utils.http import http_date
from django.utils.hashcompat import md5_constructor
-from django.utils import translation
+from django.utils.translation import get_language
from django.http import HttpRequest
cc_delim_re = re.compile(r'\s*,\s*')
@@ -134,6 +134,15 @@ def patch_vary_headers(response, newheaders):
if newheader.lower() not in existing_headers]
response['Vary'] = ', '.join(vary_headers + additional_headers)
+def _i18n_cache_key_suffix(request, cache_key):
+ """If enabled, returns the cache key ending with a locale."""
+ if settings.USE_I18N:
+ # first check if LocaleMiddleware or another middleware added
+ # LANGUAGE_CODE to request, then fall back to the active language
+ # which in turn can also fall back to settings.LANGUAGE_CODE
+ cache_key += '.%s' % getattr(request, 'LANGUAGE_CODE', get_language())
+ return cache_key
def _generate_cache_key(request, headerlist, key_prefix):
"""Returns a cache key from the headers given in the header list."""
ctx = md5_constructor()
@@ -144,18 +153,14 @@ def _generate_cache_key(request, headerlist, key_prefix):
path = md5_constructor(iri_to_uri(request.path))
cache_key = 'views.decorators.cache.cache_page.%s.%s.%s' % (
key_prefix, path.hexdigest(), ctx.hexdigest())
- if settings.USE_I18N:
- cache_key += '.%s' % translation.get_language()
- return cache_key
+ return _i18n_cache_key_suffix(request, cache_key)
def _generate_cache_header_key(key_prefix, request):
"""Returns a cache key for the header cache."""
path = md5_constructor(iri_to_uri(request.path))
cache_key = 'views.decorators.cache.cache_header.%s.%s' % (
key_prefix, path.hexdigest())
- if settings.USE_I18N:
- cache_key += ".%s" % translation.get_language()
- return cache_key
+ return _i18n_cache_key_suffix(request, cache_key)
def get_cache_key(request, key_prefix=None):
5 docs/topics/cache.txt
@@ -323,10 +323,13 @@ more on these decorators.
.. versionadded:: 1.2
If :setting:`USE_I18N` is set to ``True`` then the generated cache key will
-include the name of the currently active :term:`language<language code>`.
+include the name of the active :term:`language<language code>`.
This allows you to easily cache multilingual sites without having to create
the cache key yourself.
+See :ref:`topics-i18n-deployment` for more on how Django discovers the active
__ `Controlling cache: Using other headers`_
The per-view cache
1  tests/regressiontests/cache/
@@ -476,7 +476,6 @@ def setUp(self):
('es', 'Spanish'),
settings.CACHE_MIDDLEWARE_KEY_PREFIX = 'settingsprefix'
self.path = '/cache/test/'
def tearDown(self):

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