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revert BasePageSizePagination class and CursorPagination inheritance

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This commit is contained in:
homm 2015-07-13 14:36:47 +03:00
parent 30b36a594f
commit 59905e9335
1 changed files with 28 additions and 31 deletions
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59
rest_framework/pagination.py
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@ -201,34 +201,7 @@ class BasePagination(object):
raise NotImplementedError('to_html() must be implemented to display page controls.')
class BasePageSizePagination(BasePagination):
# The default page size.
# Defaults to `None`, meaning pagination is disabled.
page_size = api_settings.PAGE_SIZE
# Set to an integer to limit the maximum page size the client may request.
# Only relevant if 'page_size_query_param' has also been set.
max_page_size = None
# Client can control the page size using this query parameter.
# Default is 'None'. Set to eg 'page_size' to enable usage.
page_size_query_param = None
def get_page_size(self, request):
if self.page_size_query_param:
try:
return _positive_int(
request.query_params[self.page_size_query_param],
strict=True,
cutoff=self.max_page_size
)
except (KeyError, ValueError):
pass
return self.page_size
class PageNumberPagination(BasePageSizePagination):
class PageNumberPagination(BasePagination):
"""
A simple page number based style that supports page numbers as
query parameters. For example:
@ -236,10 +209,21 @@ class PageNumberPagination(BasePageSizePagination):
http://api.example.org/accounts/?page=4
http://api.example.org/accounts/?page=4&page_size=100
"""
# The default page size.
# Defaults to `None`, meaning pagination is disabled.
page_size = api_settings.PAGE_SIZE
# Client can control the page using this query parameter.
page_query_param = 'page'
# Client can control the page size using this query parameter.
# Default is 'None'. Set to eg 'page_size' to enable usage.
page_size_query_param = None
# Set to an integer to limit the maximum page size the client may request.
# Only relevant if 'page_size_query_param' has also been set.
max_page_size = None
last_page_strings = ('last',)
template = 'rest_framework/pagination/numbers.html'
@ -334,6 +318,19 @@ class PageNumberPagination(BasePageSizePagination):
('results', data)
]))
def get_page_size(self, request):
if self.page_size_query_param:
try:
return _positive_int(
request.query_params[self.page_size_query_param],
strict=True,
cutoff=self.max_page_size
)
except (KeyError, ValueError):
pass
return self.page_size
def get_next_link(self):
if not self.page.has_next():
return None
@ -487,20 +484,20 @@ class LimitOffsetPagination(BasePagination):
return template.render(context)
class CursorPagination(BasePageSizePagination):
class CursorPagination(BasePagination):
"""
The cursor pagination implementation is neccessarily complex.
For an overview of the position/offset style we use, see this post:
http://cramer.io/2011/03/08/building-cursors-for-the-disqus-api/
"""
cursor_query_param = 'cursor'
page_size = api_settings.PAGE_SIZE
invalid_cursor_message = _('Invalid cursor')
ordering = '-created'
template = 'rest_framework/pagination/previous_and_next.html'
def paginate_queryset(self, queryset, request, view=None):
self.page_size = self.get_page_size(request)
if not self.page_size:
if self.page_size is None:
return None
self.base_url = request.build_absolute_uri()