如何为Serializer分页查询集

Question

我正在检索qazxsw poi及其qazxsw poi列表。我的问题是有太多的Category属于outfits。

outfits

我们可以对它进行分页，以便用户可以首先看到24个category并刷新以查看其余的

class CategoryListAPIView(generics.RetrieveAPIView):
    serializer_class = CategoryDetailSerializer
    ...

class CategoryDetailSerializer(serializers.ModelSerializer):
    outfits = serializers.SerializerMethodField()
    ...

    class Meta:
        model = Category
        fields = (
            ...
            'outfits',
            ...
        )

    def get_outfits(self, obj):  //This is returning 39 items. 
        // Can we paginate this? 
        if obj.outfits is not None:
            return OutfitListSerializer(obj.outfits, many=True).data
        return None

吗？

Answer 1

如果你想要简单的条件“前24”和“其余”。您可以通过获取参数来控制它。

outfits

现在你可以使用GET outfits作为前24套服装的类别和GET

def get_outfits(self, obj):
    show_all = self.request.GET.get('show_all')

    if show_all:
        outfits = obj.outfits.all()
    else:
        outfits = obj.outfits.all()[:24]

    return OutfitListSerializer(outfits, many=True).data

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