def calc_last_modified(request, *args, **kwargs):
"""
Returns the file's modified time as the last-modified date
"""
assert "cache_name" in kwargs, "Must specify cache_name as a keyword arg."
try:
cache = get_cache(kwargs["cache_name"])
assert isinstance(cache, FileBasedCache) or isinstance(cache, LocMemCache), "requires file-based or mem-based cache."
except InvalidCacheBackendError:
return None
key = django_get_cache_key(request, cache=cache)
if key is None or not cache.has_key(key):
return None
if isinstance(cache, FileBasedCache):
fname = cache._key_to_file(cache.make_key(key))
if not os.path.exists(fname): # would happen only if cache expired AFTER getting the key
return None
last_modified = datetime.datetime.fromtimestamp(os.path.getmtime(fname))
elif isinstance(cache, LocMemCache):
# It's either in the cache (and valid), and therefore anything since the server
# started would be fine.
# Or, it's not in the cache at all.
creation_time = cache._expire_info[cache.make_key(key)] - settings.CACHE_TIME
last_modified = datetime.datetime.fromtimestamp(creation_time)
return last_modified
def caching():
"""
Find articles and adding them into
cache if cache is empty
:param articles: All articles want to be
listed in the index page
:return:
result: articles in the cache
"""
cache_key = 'articles'
cache_time = 60 * 60 # time to live in seconds
cache = get_cache("default")
result = cache.get(cache_key)
if not result:
articles = Article.objects.select_related().order_by(
'-pub_date').prefetch_related('categories')
print articles
# if articles has no image
for article in articles:
if article.image == "":
article.image = "blog/not-found.png"
article.save()
cache.set(cache_key, articles, cache_time)
result = cache.get(cache_key)
return result
def calc_last_modified(request, *args, **kwargs):
"""
Returns the file's modified time as the last-modified date
"""
assert "cache_name" in kwargs, "Must specify cache_name as a keyword arg."
try:
cache = get_cache(kwargs["cache_name"])
assert isinstance(cache, FileBasedCache) or isinstance(
cache, LocMemCache), "requires file-based or mem-based cache."
except InvalidCacheBackendError:
return None
key = django_get_cache_key(request, cache=cache)
if key is None or not cache.has_key(key):
return None
if isinstance(cache, FileBasedCache):
fname = cache._key_to_file(cache.make_key(key))
if not os.path.exists(
fname
): # would happen only if cache expired AFTER getting the key
return None
last_modified = datetime.datetime.fromtimestamp(
os.path.getmtime(fname))
elif isinstance(cache, LocMemCache):
# It's either in the cache (and valid), and therefore anything since the server
# started would be fine.
# Or, it's not in the cache at all.
creation_time = cache._expire_info[cache.make_key(
key)] - settings.CACHE_TIME
last_modified = datetime.datetime.fromtimestamp(creation_time)
return last_modified
def calc_last_modified(request, *args, **kwargs):
"""
Returns the file's modified time as the last-modified date
"""
assert "cache_name" in kwargs, "Must specify cache_name as a keyword arg."
try:
cache = get_cache(kwargs["cache_name"])
assert isinstance(cache, FileBasedCache), "requires file-based cache."
except InvalidCacheBackendError:
return None
key = get_cache_key(request, cache=cache)
if key is None:
return None
fname = cache._key_to_file(cache.make_key(key))
if not os.path.exists(fname): # would happen only if cache expired AFTER getting the key
return None
last_modified = datetime.datetime.fromtimestamp(os.path.getmtime(fname))
return last_modified
def calc_last_modified(request, *args, **kwargs):
"""
Returns the file's modified time as the last-modified date
"""
assert "cache_name" in kwargs, "Must specify cache_name as a keyword arg."
try:
cache = get_cache(kwargs["cache_name"])
assert isinstance(cache, FileBasedCache), "requires file-based cache."
except InvalidCacheBackendError:
return None
key = get_cache_key(request, cache=cache)
if key is None:
return None
fname = cache._key_to_file(cache.make_key(key))
if not os.path.exists(
fname): # would happen only if cache expired AFTER getting the key
return None
last_modified = datetime.datetime.fromtimestamp(os.path.getmtime(fname))
return last_modified
def get_web_cache():
return get_cache(settings.CACHE_NAME) if caching_is_enabled() else None
def delete_cache():
cache_key = 'articles'
cache = get_cache("default")
cache.delete(cache_key)
def get_web_cache():
return get_cache(settings.CACHE_NAME) if caching_is_enabled() else None
def get_web_cache():
return get_cache('default') if caching_is_enabled() else None
def get_web_cache():
return get_cache("web_cache") if settings.CACHE_TIME != 0 else None
def get_web_cache():
return get_cache("web_cache") if caching_is_enabled() else None
def get_web_cache():
return get_cache('default') if caching_is_enabled() else None
def get_web_cache():
return get_cache("web_cache") if caching_is_enabled() else None