Field for Postgres RangeField not work on Django 2.2.x( at least)

[sprhawk]

I'm using Django 2.2.x, graphene-django 2.3.0

I use a Postgres DateTimeRangeField, but GraphQL reports error ""User Error: expected iterable, but did not find one for field XXX"

I digged in, and found in graphql: execution/executor.py

586     assert isinstance(result, Iterable), (
587         "User Error: expected iterable, but did not find one " + "for field {}.{}."
588     ).format(info.parent_type, info.field_name)

where result is NonNull, inside is DateTimeTZRange. which is not declared List(DateTime) declared inside graphene-django converter.py

 233 @convert_django_field.register(RangeField)
 234 def convert_posgres_range_to_string(field, registry=None):
 235     inner_type = convert_django_field(field.base_field)
 236     if not isinstance(inner_type, (List, NonNull)):
 237         inner_type = type(inner_type)
 238     return List(inner_type, description=field.help_text, required=not field.null)

I want to define a data type to show structure for Range like:

{
    lower
    upper
    bounds
}

which will introduce break changes to current API.

is it OK to do this. or what else better solution to this?

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[elcolie]

This problem still persist with Django3. Here is simple code to get the same error

from django.contrib.postgres.fields import DecimalRangeField
from django.db import models

class Premium(models.Model):
    percentage = models.DecimalField(max_digits=10, decimal_places=2)
    sum_insured = DecimalRangeField()   # Insurer accepts this range

    def __str__(self):
        return f"{self.percentage} | {self.sum_insured}"

from graphene import relay
from graphene_django import DjangoObjectType

from experiment_django3.insurances.models import Premium

class PremiumNode(DjangoObjectType):
    class Meta:
        model = Premium
        filter_fields = [
            'percentage',
            'sum_insured',
        ]
        interfaces = (relay.Node,)

[artdiev]

Still a problem

[dejanjovicic22]

Still a problem

[aradkdj]

Sorry to bump this, but it's been almost a year since the last comment. Today I hit this andgot as far as OP, also willing to make a PR if it would be welcomed

[kiendang]

@aradkdj Yes a PR would be very much welcomed.