Question

我已将drf-extensions中的CacheResponseMixin添加到我的视图中，但只有第一页被缓存并返回所有其他页面，例如/？page = 2只返回第1页的结果。

class ProductViewSet(CacheResponseMixin, mixins.ListModelMixin, mixins.RetrieveModelMixin, viewsets.GenericViewSet):
    queryset = Product.objects.filter(withdrawn=False)
    serializer_class = ProductSerializer
    pagination_class = LargeResultsSetPagination

我正在使用django 1.85。这是一个错误还是我错过了什么？

Answer 1

这没有详细记录，但是阅读源代码（对于PaginationKeyBit类），您需要在视图集类中添加page_kwarg = 'page'或paginate_by_param = 'page'。

Answer 2

使用自定义键构造函数进行最终修复：

from rest_framework_extensions.cache.mixins import CacheResponseMixin
from rest_framework_extensions.key_constructor.constructors import (
    DefaultKeyConstructor
)
from rest_framework_extensions.key_constructor.bits import (
    QueryParamsKeyBit   
)

class QueryParamsKeyConstructor(DefaultKeyConstructor):
    all_query_params = bits.QueryParamsKeyBit()

class ProductViewSet(CacheResponseMixin, mixins.ListModelMixin, mixins.RetrieveModelMixin, viewsets.GenericViewSet):
    queryset = Product.objects.filter(withdrawn=False)
    serializer_class = ProductSerializer
    pagination_class = LargeResultsSetPagination
    list_cache_key_func = QueryParamsKeyConstructor()

CacheResponseMixin不适用于分页

2 个答案: