Json field migration

[Ferdellans]

From readme example for Event model

content = models.JSONField(default=dict)

when applying python manage.py migrate --database clickhouse - you get error

django.db.utils.OperationalError: Code: 44.
DB::Exception: Cannot create column with type 'Object('json')' because experimental Object type is not allowed. Set setting allow_experimental_object_type = 1 in order to allow it. Stack trace:

for fixing this you need to pass in settings db

"OPTIONS": {
            "settings": {
                "allow_experimental_object_type": 1,
            }
        }

then migration works

python manage.py migrate event --database clickhouse
Operations to perform:
  Apply all migrations: event
Running migrations:
  Applying event.0001_initial... OK

in db too

Query id: bc4656b9-94de-48e3-a921-7f16ecb603bc

   ┌─statement────────────────────────────────────────────────────────────────────────────────────────────────┐
1. │ CREATE TABLE stats.event_event                                                                          ↴│
   │↳(                                                                                                       ↴│
   │↳    `id` Int64,                                                                                         ↴│
   │↳    `ip` IPv6,                                                                                          ↴│
   │↳    `ipv4` IPv4,                                                                                        ↴│
   │↳    `ip_nullable` Nullable(IPv6),                                                                       ↴│
   │↳    `port` UInt16,                                                                                      ↴│
   │↳    `protocol` LowCardinality(String),                                                                  ↴│
   │↳    `content` Object('json'),