55 lines
2.1 KiB
Python
55 lines
2.1 KiB
Python
# Copyright (C) 2014 Andrey Antukh <niwi@niwi.be>
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# Copyright (C) 2014 Jesús Espino <jespinog@gmail.com>
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# Copyright (C) 2014 David Barragán <bameda@dbarragan.com>
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as
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# published by the Free Software Foundation, either version 3 of the
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# License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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from rest_framework.templatetags.rest_framework import replace_query_param
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class ConditionalPaginationMixin(object):
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def get_paginate_by(self, *args, **kwargs):
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if "HTTP_X_DISABLE_PAGINATION" in self.request.META:
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return None
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return super().get_paginate_by(*args, **kwargs)
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class HeadersPaginationMixin(object):
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def paginate_queryset(self, queryset, page_size=None):
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page = super().paginate_queryset(queryset=queryset, page_size=page_size)
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if page is None:
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return page
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self.headers["x-pagination-count"] = page.paginator.count
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self.headers["x-paginated"] = "true"
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self.headers["x-paginated-by"] = page.paginator.per_page
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self.headers["x-pagination-current"] = page.number
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if page.has_next():
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num = page.next_page_number()
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url = self.request.build_absolute_uri()
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url = replace_query_param(url, "page", num)
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self.headers["X-Pagination-Next"] = url
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if page.has_previous():
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num = page.previous_page_number()
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url = self.request.build_absolute_uri()
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url = replace_query_param(url, "page", num)
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self.headers["X-Pagination-Prev"] = url
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return page
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def get_pagination_serializer(self, page):
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return self.get_serializer(page.object_list, many=True)
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