def flattened_queryset_timeblocks(queryset, start_key, end_key):
from limbo.timeblock.logic import TimeBlock
queryset = queryset.order_by(start_key)
timeblocks = []
current_tb = None
for obj in queryset:
start = model_attribute(obj, start_key)
end = model_attribute(obj, end_key)
if not end:
end = datetime.datetime.now()
timeblock = TimeBlock(start, end)
if current_tb:
if timeblock.overlaps(current_tb):
current_tb += timeblock
else:
timeblocks.append(current_tb)
current_tb = timeblock
else:
current_tb = timeblock
if current_tb:
timeblocks.append(current_tb)
return timeblocks