# yourapp/models.py
from django.conf import settings
from django.contrib.auth.models import AbstractUser
from django.db import models
from djmoney.models.fields import MoneyField


class User(AbstractUser):
    pass


class Product(models.Model):
    creator = models.ForeignKey(User, related_name="products", on_delete=models.CASCADE)
    title = models.CharField(max_length=2000)
    cost = MoneyField(
        max_digits=settings.CURRENCY_MAX_DIGITS,
        decimal_places=settings.CURRENCY_DECIMAL_PLACES,
        default_currency=settings.BASE_CURRENCY,
        null=True,
        blank=True,
    )

# yourapp/schema/types.py

import graphene
from graphene_django import DjangoObjectType

from yourapp import models


class Product(DjangoObjectType):
    class Meta:
        model = models.Product
        interfaces = (graphene.relay.Node,)
        fields = ("id", "cost")

# yourapp/schema/__init__.py

import graphene

from .. import models
from .types import Product

class Queries(graphene.ObjectType):

    products = graphene.List(graphene.NonNull(types.Product), required=True)

    def resolve_products(self, info, **kwargs):
        return models.Product.objects.all()


schema = graphene.Schema(query=Queries, types=[Product])

# yourapp/settings.py

INSTALLED_APPS += [
    "graphene_djmoney",
]

GRAPHENE = {
    "SCHEMA": "yourapp.schema.schema",
}