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from collections import OrderedDict
from rest_framework import pagination
from rest_framework.response import Response
class GeoJsonPagination(pagination.PageNumberPagination):
"""
A geoJSON implementation of a pagination serializer.
"""
page_size_query_param = 'page_size'
def get_paginated_response(self, data):
return Response(
OrderedDict(
[
('type', 'FeatureCollection'),
('count', self.page.paginator.count),
('next', self.get_next_link()),
('previous', self.get_previous_link()),
('features', data['features']),
]
)
)
def get_paginated_response_schema(self, view):
schema = super().get_paginated_response_schema(view)
schema["properties"]["features"] = schema["properties"].pop("results")
schema["properties"] = {
"type": {"type": "string", "enum": ["FeatureCollection"]},
**schema["properties"],
}
return schema
|
