对商品详情页的理解

根据商品分类categroy_id查询数据库（分页，排序，序列化） 返回给前端

实现流程

自定义分页类

from rest_framework.pagination import PageNumberPagination

class StandardResultsSetPagination(PageNumberPagination):
    page_size = 2
    page_size_query_param = 'page_size'
    max_page_size = 20

在配置文件中指定分页类

REST_FRAMEWORK = {
    ...
    # 分页
    'DEFAULT_PAGINATION_CLASS': 'meiduo_mall.utils.pagination.StandardResultsSetPagination',
}

在goods/views.py实现sku列表视图

from rest_framework.filters import OrderingFilter

class SKUListView(ListAPIView):
    """
    sku列表数据
    """
    serializer_class = SKUSerializer
    filter_backends = (OrderingFilter,)
    ordering_fields = ('create_time', 'price', 'sales')

    def get_queryset(self):
        category_id = self.kwargs['category_id']
        return SKU.objects.filter(category_id=category_id, is_launched=True)