[Django] crash when loading document with JSONField and datetime or ObjectId with it

[Stephane_Konstantaropoulos (Stéphane Konstantaropoulos)]

You can try with this:

from django.test import TestCase
from pymongo import MongoClient
import datetime

from asmorm.models import Observation


class ObservationTestCase(TestCase):
    def test_observation(self):
        Observation.objects.create()
        observation = Observation.objects.all()[0]

        self.assertIsNotNone(observation)
        client = MongoClient("mongodb://localhost/")
        db = client["test_demo"]
        db.asmorm_observation.update_one(
            {"_id": observation.pk},
            {
                "$set": {
                    "history": [
                        {"update": datetime.datetime.now(datetime.UTC), "value": "1"}
                    ]
                }
            },
        )
        observation.refresh_from_db()
        print(observation.history)

in tests.py

And this

import django_mongodb_backend
from django.db import models
from django_mongodb_backend.fields import ArrayField


class Observation(models.Model):
    _if = django_mongodb_backend.fields.ObjectIdAutoField(primary_key=True)
    history = ArrayField(base_field=models.JSONField(), default=list)

in models.py