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"""
Context processor for lightweight session messages.
Time-stamp: <2008-07-19 23:16:19 carljm context_processors.py>
"""
from django.utils.encoding import StrAndUnicode
from askbot.user_messages import get_and_delete_messages
def user_messages (request):
"""
Returns session messages for the current session.
"""
messages = request.user.get_and_delete_messages()
#if request.user.is_authenticated():
#else:
# messages = LazyMessages(request)
#import inspect
#print inspect.stack()[1]
#print messages
return { 'user_messages': messages }
class LazyMessages (StrAndUnicode):
"""
Lazy message container, so messages aren't actually retrieved from
session and deleted until the template asks for them.
"""
def __init__(self, request):
self.request = request
def __iter__(self):
return iter(self.messages)
def __len__(self):
return len(self.messages)
def __nonzero__(self):
return bool(self.messages)
def __unicode__(self):
return unicode(self.messages)
def __getitem__(self, *args, **kwargs):
return self.messages.__getitem__(*args, **kwargs)
def _get_messages(self):
if hasattr(self, '_messages'):
return self._messages
self._messages = get_and_delete_messages(self.request)
return self._messages
messages = property(_get_messages)
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