def update_dates_rrule(self, last_event=None):
# NOTE: we are not trying to be too smart here, just some basic guesses
# apart from the straightforward logic. Facts will *not* fit the plans
# most of the time.
if self.dates_rrule_text:
# FIXME HACK
if self.dates_rrule_text.startswith('once '):
rrule_text = self.dates_rrule_text.replace('once ', 'every ')
else:
rrule_text = self.dates_rrule_text
#print 'text defined'
# looks like rrule will pick now() if valid_since is None even if
# after(x) is given, so we pass the first event date in this case
since = self.valid_since or (
self.events.order_by('date_time')[0].date_time if self.events else None)
self.dates_rrule = informal_rrule(rrule_text,
since = since,
until = self.valid_until
)
#print 'rrule created'
if not last_event and self.events:
#print 'no explicit last event but there are some'
# XXX NOTE: assumed that payments are sorted by date DESC (most
# recent on top):
last_event = self.events[0]
if last_event:
#print 'got explicit last event', last_event
self.next_date_time = self.dates_rrule.after(last_event.date_time)
elif self.skip_past_events:
now = datetime.datetime.utcnow() # or better yesterday?
self.next_date_time = self.dates_rrule.after(now)
else:
#print 'no last event at all, picking 1st rrule event'
try:
self.next_date_time = self.dates_rrule[0]
except IndexError:
self.next_date_time = None
# FIXME HACK
if self.dates_rrule_text.startswith('once '):
self.dates_rrule = None
else:
#print 'no rrule text'
self.dates_rrule = self.next_date_time = None
if self.valid_until:
self.next_date_time = datetime.datetime.combine(
self.valid_until, datetime.time())
def informal_rrule(*args, **kwargs):
"A wrapper for informal_rrule that does lazy import"
from orgtool.utils.dates import informal_rrule
return informal_rrule(*args, **kwargs)