[QUESTION] How to pass custom arguments from filter to custom connector?

[zurek11]

First of all, i would like to apologize to post this question here (I know, that issues are for features and bug reports). I tried to find help on stackoverflow (original question), but no one helped.

My problem has roots in implementing reports in my API. I wanted to make report straight from executed query (with applied filters and ordering) and I figured out that custom connection class is the right way. So if someone wants to make from query like this report:

query{
  transactions(
    first: 10
    fromDate: "2010-12-24"
    toDate: "2020-12-24"
  ){
    edges{
      node{
        amount
        date
      }
      cursor
    }
  }
}

Only he needs to do is to add something like this:

query{
  transactions(
    first: 10
    fromDate: "2010-12-24"
    toDate: "2020-12-24"
  ){
    pdfUrl
    xlsxUrl
    edges{
      node{
        amount
        createdAt
      }
      cursor
    }
  }
}

And response will be url to generated report like this: \

• "pdfUrl": "http:\\127.0.0.1:7000\\media\\pdf\\transactions\\bc288dd8-d3e3-48d8-aa34-a3b08e3c5967.pdf"
• "xlsxUrl": "http:\\127.0.0.1:7000\\media\\xlsx\\transactions\\5dc3ac83-74cd-4e2f-9796-310849d06245.xlsx"

The real issue and problem happens, when I need to make two different types of reports to the same query. First is ok, there I need all transactions, but in second type, there I only need to sum amount of transactions before specified date, in specified date and at the end. So I had an idea, that when I will receive filter arguments: toDate, fromDate, I will filter transactions in this interval in filter class and in my connection class in resolve I will sum these values and add them to report. But connection class or resolve methods has no access to used filter arguments. Also I don't know if it's possible to pass somehow from my filter class some custom arguments to my connection class for example from qs property:

class TransactionFilter(django_filters.FilterSet):
    @property
    def qs(self):
        return super().qs

I was thinking about changing my custom DjangoFilterConnectionField where i added cutom ordering, because as you see, there are filter_kwargs and connection (which is I hope connection class), but I have no idea how to accomplish something like that:

class OrderedDjangoFilterConnectionField(DjangoFilterConnectionField):
    @classmethod
    def resolve_queryset(cls, connection, iterable, info, args, filtering_args, filterset_class):
        qs = super(DjangoFilterConnectionField, cls).resolve_queryset(connection, iterable, info, args)
        filter_kwargs = {k: v for k, v in args.items() if k in filtering_args}
        qs = filterset_class(data=filter_kwargs, queryset=qs, request=info.context).qs

        order = args.get('orderBy', None)
        if order:
            if type(order) is str:
                snake_order = to_snake_case(order)
            else:
                snake_order = [to_snake_case(o) for o in order]
            qs = qs.order_by(*snake_order)

        return qs

If you need more code snippets from my implementation, try to look into my original stackowerflow link or ask. I will be very glad to give you what you need to help me. Thank you guys.