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@eerien
Created March 1, 2015 15:27
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Paginator for infinite scroll on Django.
class Paginator(object):
def __init__(self, object_list, per_page=10, latest_id=None, latest_id_field='id', order_by='desc'):
assert type(latest_id_field) == str
self.object_list = object_list
self.per_page = per_page
self.latest_id = latest_id
self.latest_id_field = latest_id_field
self.order_by = order_by
def next(self):
start_index = 0
if self.latest_id:
for obj in self.object_list:
if self.order_by == 'desc' and getattr(obj, self.latest_id_field) < self.latest_id:
break
elif self.order_by == 'asc' and getattr(obj, self.latest_id_field) > self.latest_id:
break
start_index += 1
else:
return []
return self.object_list[start_index:start_index+self.per_page]
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