def wrapped(*args, **kwargs):
try:
requested_limit = int(request.args.get('n', _MAX_RESULTS_PER_PAGE))
except ValueError:
requested_limit = 0
limit = max(min(requested_limit, _MAX_RESULTS_PER_PAGE), 1)
next_page_token = request.args.get('next_page', request.args.get('last', None))
# Decrypt the next page token, if any.
start_id = None
page_info = decrypt_page_token(next_page_token)
if page_info is not None:
start_id = page_info.get('start_id', None)
def callback(results, response):
if len(results) <= limit:
return
next_page_token = encrypt_page_token({'start_id': max([obj.id for obj in results])})
link_url = os.path.join(get_app_url(), url_for(request.endpoint, **request.view_args))
link_param = urlencode({'n': limit, 'next_page': next_page_token})
link = '<%s?%s>; rel="next"' % (link_url, link_param)
response.headers['Link'] = link
kwargs[limit_kwarg_name] = limit
kwargs[start_id_kwarg_name] = start_id
kwargs[callback_kwarg_name] = callback
return func(*args, **kwargs)
def wrapper(self, *args, **kwargs):
# Note: if page_token is None, we'll receive the first page of results back.
page_token = decrypt_page_token(kwargs[parsed_args_kwarg]["next_page"])
kwargs[page_token_kwarg] = page_token
(result, next_page_token) = func(self, *args, **kwargs)
if next_page_token is not None:
result["next_page"] = encrypt_page_token(next_page_token)
return result