Error for nested filtered connection fields that are Sets

[qotho]

The UnsortedSQLAlchemyConnectionField.resolve_connection function throws the following error when it tries to resolve relationship fields that are Sets instead of lists (defined using SQLAlchemy's "collection_class=set" on the relationship).

ERROR:    Traceback (most recent call last):
  File "/usr/local/lib/python3.8/site-packages/promise/promise.py", line 87, in try_catch
    return (handler(*args, **kwargs), None)
  File "/usr/local/lib/python3.8/site-packages/graphene_sqlalchemy/fields.py", line 56, in resolve_connection
    connection = connection_from_list_slice(
  File "/usr/local/lib/python3.8/site-packages/graphql_relay/connection/arrayconnection.py", line 79, in connection_from_list_slice
    _slice = list_slice[
graphql.error.located_error.GraphQLLocatedError: 'InstrumentedSet' object is not subscriptable

This can be worked around for fields in the GraphQL model classes by adding a resolver function that converts the sets to lists, but nested filtered connection fields use the UnsortedSQLAlchemyConnectionField.resolve_connection function by default, which doesn't seem to be easy to override.

[art1415926535]

Nested connections are managed by graphene_sqlalchemy.

You can override FilterableFieldFactory (registry is graphene_sqlalchemy object) and set to FilterableConnectionField as factory variable.