django rest框架queryset没有命令

Question

我使用模型 Meta ordering = ['-published_date']

现在看来:

class InvoiceViewSet(viewsets.ModelViewSet):
    queryset = Invoice.objects.all()
    serializer_class = InvoiceSerializer
    filter_fields = ('table',)

和序列化器:

class InvoiceSerializer(serializers.ModelSerializer):
    items = ItemSerializer(many=True, allow_add_remove=True)

    class Meta:
        model = Invoice
        fields = ('id',  'items', 'table', 'published_date')

但这种排序不起作用,它显示我订购ASC,我需要DESC,它根本不影响订单.

我究竟做错了什么？

Answer 1

如果模型确实有一个排序它真的将反映在默认列表视图.我建议get_queryset()在那里覆盖和调试返回结果,或者明确地将顺序添加到查询集.

例如:

queryset = Invoice.objects.all().order_by('-published_date')

想知道您是否可以配置一个覆盖排序的过滤器.值得测试如果关闭所有过滤器会发生什么.我看到你有filter_fields属性设置,所以假设你的设置中有这样的东西......

REST_FRAMEWORK = {
    'DEFAULT_FILTER_BACKENDS': ('rest_framework.filters.DjangoFilterBackend',)
}

如果你发表评论那会解决问题吗？

Answer 2

解决方案是覆盖filter_queryset:

def filter_queryset(self, queryset):
    queryset = super(InvoiceViewSet, self).filter_queryset(queryset)
    return queryset.order_by('-published_date')

Answer 3

对于 Django REST 框架，您可以使用OrderingFilter。

from django_filters import DjangoFilterBackend
from rest_framework import viewsets, filters


class InvoiceViewSet(viewsets.ModelViewSet):
    queryset = Invoice.objects.all()
    serializer_class = InvoiceSerializer

    filter_backends = (DjangoFilterBackend, filters.OrderingFilter)

    # Explicitly specify which fields the API may be ordered against
    ordering_fields = ('items', 'table', 'published_date')

    # This will be used as the default ordering
    ordering = ('-published_date')

Answer 4

@Mirza Delic的答案有效但不保持从request.QUERY_PARAMS开始的顺序.

class YOUR_VIEW_SET(viewsets.ModelViewSet):
    #your code here
    ordering_filter = OrderingFilter()

    def filter_queryset(self, queryset):
        queryset = super(YOUR_VIEW_SET, self).filter_queryset(queryset)
        return self.ordering_filter.filter_queryset(self.request, queryset, self)

这对我和我希望的其他人都有用.