Prefetch related in custom resolver

[p02diada]

Hi, there is a way to improve the performance of a custom resolver like this one? I could not find it.

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class MatchType(DjangoObjectType):
    accepted_attendances = graphene.Int()


class Meta:
    name = 'match'
    model = Match
    interfaces = (CustomNode,)
    connection_class = CountableConnectionBase
    only_fields = [
        'attendances',
    ]

    filter_fields = {
        'datetime': ['gte'],
    }

def resolve_accepted_attendances(self, info):
    return self.attendances.filter(status=AttendanceStatusConstants.ACCEPTED).count()