def getCacheForObject(obj):
"""Returns the cache associated with `obj` or ``None``."""
adapter = ICacheable(obj, None)
if adapter is None:
return None
cache_id = adapter.getCacheId()
if not cache_id:
return None
return getUtility(ICache, cache_id)
class CacheableView(BrowserView):
__used_for__ = IAnnotatable
form = ViewPageTemplateFile("cacheableedit.pt")
def __init__(self, *args):
super(CacheableView, self).__init__(*args)
self.cacheable = ICacheable(self.context)
setUpEditWidgets(self, ICacheable, self.cacheable)
def current_cache_id(self):
"Returns the current cache ID."
return self.cacheable.getCacheId()
def current_cache_url(self):
"Returns the current cache provider's URL."
cache = getCacheForObject(self.context)
absolute_url = zapi.getMultiView((cache, self.request),
name='absolute_url')
try:
return absolute_url()
except TypeError:
# In case the cache object is a global one and does not have a
# location, then we just return None.
return None
def invalidate(self):
"Invalidate the current cached value."
cache = getCacheForObject(self.context)
location = getLocationForCache(self.context)
if cache and location:
cache.invalidate(location)
return self.form(message=_("cache-invalidated", u"Invalidated."))
else:
return self.form(message=_("no-cache-associated",
u"No cache associated with object."))
def action(self):
"Change the cacheId"
try:
cacheId = self.cacheId_widget.getInputValue()
except WidgetInputError, e:
#return self.form(errors=e.errors)
return repr(e.errors)
else: