def build_news_feed(sender, instance, **kwargs):
"""
Build a static version of the news feed when a LibNewsPage is
published or unpublished. Query the Django Rest Framework
(Wagtail v2 API) and save the results to a static JSON file
in the static files directory.
Args:
sender: LibNewsPage class
instance: LibNewsPage instance
Returns:
None but writes a file to the static directory
"""
clear_cache()
cache.delete('news_cats')
drf_url = instance.get_site().root_url + DRF_NEWS_FEED
try:
serialized_data = urlopen(drf_url).read()
data = json.loads(serialized_data)
with open(STATIC_NEWS_FEED, 'w', encoding='utf-8') as f:
json.dump(data, f, ensure_ascii=False, indent=None)
except (URLError):
# We are running unit tests
return None
def test_clear_cache(self):
# First get should miss cache.
self.get_miss(self.page_cachedpage.get_url())
# Second get should hit cache.
self.get_hit(self.page_cachedpage.get_url())
# clear all from Cache
clear_cache()
# Now the page should miss cache.
self.get_miss(self.page_cachedpage.get_url())
# Purge specific Url
self.get_hit(self.page_cachedpage.get_url())
self.get_miss(self.page_cachedpage.get_url() + "?action=pytest")
url_from_keyring = next(iter(self.cache.get("keyring")))
clear_cache([url_from_keyring + r"(?:\?|$)"])
# Check if keyring is not present
self.assertEqual(self.cache.get("keyring"), None)
# Now the page should miss cache.
self.get_miss(self.page_cachedpage.get_url())
def tearDown(self):
# Clear the cache and log out between each test.
clear_cache()
self.client.logout()
# Delete any hooks.
try:
del hooks._hooks["is_request_cacheable"]
except KeyError:
pass
try:
del hooks._hooks["is_response_cacheable"]
except KeyError:
pass
def clear_wagtailcache(request, page):
if page.live:
clear_cache()
def clear(request):
"""
AJAX call to clear the cache.
"""
clear_cache()
return HttpResponse(_("Cache has been cleared."))
def clear_wagtailcache(request, page):
invalidate_all()
if page.live:
clear_cache()
def clear_wagtailcache(*args, **kwargs):
clear_cache()
def handle(self, *args, **options):
clear_cache()