Error on migrate: 'Options' object has no attribute 'index_together'. Did you mean: 'unique_together'

Describe the bug On trying out the basic example provided in the repo, i got the below error on migration:

Running migrations:
Traceback (most recent call last):
  File "/app/manage.py", line 22, in <module>
    main()
  File "/app/manage.py", line 18, in main
    execute_from_command_line(sys.argv)
  File "/usr/local/lib/python3.12/site-packages/django/core/management/__init__.py", line 442, in execute_from_command_line
    utility.execute()
  File "/usr/local/lib/python3.12/site-packages/django/core/management/__init__.py", line 436, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "/usr/local/lib/python3.12/site-packages/django/core/management/base.py", line 413, in run_from_argv
    self.execute(*args, **cmd_options)
  File "/usr/local/lib/python3.12/site-packages/django/core/management/base.py", line 459, in execute
    output = self.handle(*args, **options)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.12/site-packages/django/core/management/base.py", line 107, in wrapper
    res = handle_func(*args, **kwargs)
          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.12/site-packages/django/core/management/commands/migrate.py", line 357, in handle
    post_migrate_state = executor.migrate(
                         ^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.12/site-packages/django/db/migrations/executor.py", line 107, in migrate
    self.recorder.ensure_schema()
  File "/usr/local/lib/python3.12/site-packages/django/db/migrations/recorder.py", line 78, in ensure_schema
    editor.create_model(self.Migration)
  File "/usr/local/lib/python3.12/site-packages/django/db/backends/base/schema.py", line 525, in create_model
    self.deferred_sql.extend(self._model_indexes_sql(model))
                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.12/site-packages/clickhouse_backend/backend/schema.py", line 216, in _model_indexes_sql
    or model._meta.index_together
       ^^^^^^^^^^^^^^^^^^^^^^^^^^
AttributeError: 'Options' object has no attribute 'index_together'. Did you mean: 'unique_together'?

To Reproduce The following sample code was used:

from clickhouse_backend import models
from django.db.models import CheckConstraint, IntegerChoices, Q
from django.utils import timezone

class Event(models.ClickhouseModel):
    class Action(IntegerChoices):
        PASS = 1
        DROP = 2
        ALERT = 3
    ip = models.GenericIPAddressField(default="::")
    ipv4 = models.IPv4Field(default="127.0.0.1")
    ip_nullable = models.GenericIPAddressField(null=True)
    port = models.UInt16Field(default=0)
    protocol = models.StringField(default="", low_cardinality=True)
    content = models.JSONField(default=dict)
    timestamp = models.DateTime64Field(default=timezone.now)
    created_at = models.DateTime64Field(auto_now_add=True)
    action = models.EnumField(choices=Action.choices, default=Action.PASS)

    class Meta:
        ordering = ["-timestamp"]
        engine = models.MergeTree(
            primary_key="timestamp",
            order_by=("timestamp", "id"),
            partition_by=models.toYYYYMMDD("timestamp"),
            index_granularity=1024,
            index_granularity_bytes=1 << 20,
            enable_mixed_granularity_parts=1,
        )
        indexes = [
            models.Index(
                fields=["ip"],
                name="ip_set_idx",
                type=models.Set(1000),
                granularity=4
            ),
            models.Index(
                fields=["ipv4"],
                name="ipv4_bloom_idx",
                type=models.BloomFilter(0.001),
                granularity=1
            )
        ]
        constraints = (
            CheckConstraint(
                name="port_range",
                check=Q(port__gte=0, port__lte=65535),
            ),
        )

Expected behavior This error happens on trying to run the migrate function. Also another thing i noted was that the table to get created on the migrate command besides this error. Also in the migrate.md file, in the limitations its specified that Anonymous indexes and constraints(db_index, unique, index_together, unique_together) are not supported, you must provide names explicitly., so does this have to do anything with the error? edit: i tried on django=5.0 and same issue.

Versions

ClickHouse server version: 24.9.1.3278
Python version: 3.12
Clickhouse-driver version: Using docker for running clickhouse
Django version: 5.1.1
Django clickhouse backend version: 1.3

jayvynl / django-clickhouse-backend

Error on migrate: 'Options' object has no attribute 'index_together'. Did you mean: 'unique_together' #105