graphene-django为DjangoFilterConnectionField添加附加参数，并将其传递给get_queryset

问题描述

我向user_type查询添加了一个名为disposal_request的附加参数，我想使用该参数添加另一个过滤器，但是当我将其传递给get_queryset函数时。我收到以下错误：get_queryset() missing 1 required positional argument: 'user_type'我不确定如何正确传递参数。

import graphene
import graphene_django
from app.disposer.models import disposalRequest
from graphene_django.filter import DjangoFilterConnectionField
from graphql_jwt.decorators import login_required


class UserType(graphene.Enum):
    as_collector = "as_collector"
    as_disposer = "as_disposer"


class disposalRequestsType(graphene_django.DjangoObjectType):
    latitude = graphene.String()
    longitude = graphene.String()

    class Meta:
        model = disposalRequest
        exclude = ("location",)
        filter_fields = [
            "uuid","disposal_status",]

        interfaces = (graphene.Node,)
        convert_choices_to_enum = False

    @classmethod
    @login_required
    def get_queryset(cls,queryset,info,user_type):
        user = info.context.user
        if user_type == UserType.as_collector:
            print("as_collector")
            return queryset.filter(collector=user)
        elif user_type == UserType.as_disposer:
            print("as_disposer")
            return queryset.filter(disposer=user)

   def resolve_latitude(self,_):
        return self.location.x

    def resolve_longitude(self,_):
        return self.location.y

class disposalQueries(graphene.ObjectType):
    disposal_requests = DjangoFilterConnectionField(
        disposalRequestsType,user_type=UserType()
    )

解决方法

我最终将附加过滤器放到resolve_函数中，并为** kwargs传递了DjangoFilterConnectionField添加的其他字段

import graphene
import graphene_django
from app.disposer.models import DisposalRequest
from graphene_django.filter import DjangoFilterConnectionField
from graphql_jwt.decorators import login_required


class UserType(graphene.Enum):
    as_collector = "as_collector"
    as_disposer = "as_disposer"


class DisposalRequestsType(graphene_django.DjangoObjectType):
    latitude = graphene.String()
    longitude = graphene.String()

    class Meta:
        model = DisposalRequest
        exclude = ("location",)
        filter_fields = [
            "uuid","disposal_status",]

        interfaces = (graphene.Node,)
        convert_choices_to_enum = False

    def resolve_latitude(self,_):
        return self.location.x

    def resolve_longitude(self,_):
        return self.location.y


class DisposalQueries(graphene.ObjectType):
    disposal_requests = DjangoFilterConnectionField(
        DisposalRequestsType,user_type=UserType()
    )

    @staticmethod
    @login_required
    def resolve_disposal_requests(_,info,user_type,**__):
        user = info.context.user
        if user_type == UserType.as_collector:
            return DisposalRequest.objects.filter(collector=user).all()
        elif user_type == UserType.as_disposer:
            return DisposalRequest.objects.filter(disposer=user).all()