python (django) 7. pagination

1. api/pagination.py

from rest_framework.pagination import PageNumberPagination, LimitOffsetPagination


class StudentPageNumberPagination(PageNumberPagination):
    page_size = 2
    max_page_size = 3
    page_size_query_param = 'size'
    page_query_param = 'page'


class StudentLimitOffsetPagination(LimitOffsetPagination):
    default_limit = 2
    limit_query_description = 'limit'
    offset_query_param = 'offset'
    max_limit = 4

2. api/views.py

class AuthView(APIView):
    authentication_classes = []
    permission_classes = []
    parser_classes = [JSONParser, ]
    throttle_classes = []

    def get(self, request, *args, **kwargs):
        students = Student.objects.get_queryset().order_by('id')
        page = StudentPageNumberPagination()

        page_students = page.paginate_queryset(queryset=students, request=request, view=self)
        students_ser = StudentSerializer(instance=page_students, many=True)

        return page.get_paginated_response(data=students_ser.data)

3. postman

(1)

url: http://127.0.0.1:8011/api/auth/?page=2&token=dbfa6b230b9ca22302a00ea918346f86

method: get

return: 

{
    "count": 5,
    "next": "http://127.0.0.1:8011/api/auth/?page=3&token=dbfa6b230b9ca22302a00ea918346f86",
    "previous": "http://127.0.0.1:8011/api/auth/?token=dbfa6b230b9ca22302a00ea918346f86",
    "results": [
        {
            "id": 6,
            "name": "student3"
        },
        {
            "id": 7,
            "name": "student4"
        }
    ]
}

 

(2)

url: http://127.0.0.1:8011/api/auth/?page=2&size=3&token=dbfa6b230b9ca22302a00ea918346f86

method: get

return:

{
    "count": 6,
    "next": null,
    "previous": "http://127.0.0.1:8011/api/auth/?size=3&token=dbfa6b230b9ca22302a00ea918346f86",
    "results": [
        {
            "id": 7,
            "name": "student4"
        },
        {
            "id": 8,
            "name": "student5"
        },
        {
            "id": 9,
            "name": "student6"
        }
    ]
}

(3)

url: http://127.0.0.1:8011/api/auth/?offset=2&limit=3&token=dbfa6b230b9ca22302a00ea918346f86

method: get

return:

{
    "count": 6,
    "next": "http://127.0.0.1:8011/api/auth/?limit=3&offset=5&token=dbfa6b230b9ca22302a00ea918346f86",
    "previous": "http://127.0.0.1:8011/api/auth/?limit=3&token=dbfa6b230b9ca22302a00ea918346f86",
    "results": [
        {
            "id": 6,
            "name": "student3"
        },
        {
            "id": 7,
            "name": "student4"
        },
        {
            "id": 8,
            "name": "student5"
        }
    ]
}