26.分页封装

分页封装

封装：course/utils.py

from rest_framework.pagination import PageNumberPagination
class CoursePageNumberPagination(PageNumberPagination):

"""课程列表数据的分页器"""

page_query_param = "page"  # 页码参数

page_size_query_param = 'page_size' # 单页数据量

page_size = 5                       # 默认的单页数据量，就是每一页显示5个课程信息

max_page_size = 20                  # 允许客户端设置的单页数据量

视图：course/views.py

from .utils import CoursePageNumberPagination
class CourseAPIView(ListAPIView):
    """课程列表接口"""
    queryset = Course.objects.filter(is_delete=False, is_show=True).order_by("-orders")
    serializer_class = CourseSerializer
    pagination_class = CoursePageNumberPagination

接口

http://127.0.0.1:8000/course/