Remove count django-rest-framework

pagination.py

from rest_framework.pagination import LimitOffsetPagination, remove_query_param, replace_query_param
from rest_framework.response import Response


class CustomPagination(LimitOffsetPagination):
    """
    We are creating a custom pagination class here because count
    will take too much time to return a value, so we omit is from
    the results. Inspired by:

    https://github.com/ArabellaTech/drf_tweaks/blob/master/drf_tweaks/pagination.py
    """

    def paginate_queryset(self, queryset, request, view=None):
        self.limit = self.get_limit(request)
        if self.limit is None:
            return []

        self.offset = self.get_offset(request)
        self.effective_limit = self.limit
        if self.offset < 0:
            self.effective_limit += self.offset  # + because offset is negative
            self.offset = 0
        if self.effective_limit <= 0:
            return []

        self.request = request
        self.results = list(
            queryset[self.offset:self.offset + self.effective_limit])
        return self.results

    def get_paginated_response(self, data):
        return Response({
            'links': {
                'next': self.get_next_link(),
                'previous': self.get_previous_link()
            },
            'results': data
        })

    def get_offset(self, request):
        try:
            return int(request.query_params[self.offset_query_param])
        except (KeyError, ValueError):
            return 0

    def get_next_link(self):
        if len(self.results) < self.effective_limit:
            return None

        url = self.request.build_absolute_uri()
        url = replace_query_param(url, self.limit_query_param, self.limit)

        offset = self.offset + self.effective_limit
        return replace_query_param(url, self.offset_query_param, offset)