Cannot make migrations: ValueError: Cannot serialize: <django_selectel_storage.storage.SelectelStorage

[arsenyvolodko]

Hello, i'm trying to set storage for specific model, but cannot make migrations:

settings.py:

SELECTEL_STORAGES = {
    'default': {
        'USERNAME': 'xxxx_user',
        'PASSWORD': 'p455w0rd',
        'CONTAINER': 'my-data',
    }
}

SELECTEL_STORAGE = SelectelStorage('default')

models.py:

class PhotoModel(models.Model):
    photo = models.ImageField(storage=SELECTEL_STORAGE)

after command python3 manage.py makemigrations got an error:

Traceback (most recent call last):
  File "/Users/benomen/PycharmProjects/aicap-predict/backend/manage.py", line 24, in <module>
    main()
  File "/Users/benomen/PycharmProjects/aicap-predict/backend/manage.py", line 20, in main
    execute_from_command_line(sys.argv)
  File "/Users/benomen/Library/Caches/pypoetry/virtualenvs/non-package-mode-bHpb9l2a-py3.12/lib/python3.12/site-packages/django/core/management/__init__.py", line 442, in execute_from_command_line
    utility.execute()
  File "/Users/benomen/Library/Caches/pypoetry/virtualenvs/non-package-mode-bHpb9l2a-py3.12/lib/python3.12/site-packages/django/core/management/__init__.py", line 436, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "/Users/benomen/Library/Caches/pypoetry/virtualenvs/non-package-mode-bHpb9l2a-py3.12/lib/python3.12/site-packages/django/core/management/base.py", line 413, in run_from_argv
    self.execute(*args, **cmd_options)
  File "/Users/benomen/Library/Caches/pypoetry/virtualenvs/non-package-mode-bHpb9l2a-py3.12/lib/python3.12/site-packages/django/core/management/base.py", line 459, in execute
    output = self.handle(*args, **options)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/benomen/Library/Caches/pypoetry/virtualenvs/non-package-mode-bHpb9l2a-py3.12/lib/python3.12/site-packages/django/core/management/base.py", line 107, in wrapper
    res = handle_func(*args, **kwargs)
          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/benomen/Library/Caches/pypoetry/virtualenvs/non-package-mode-bHpb9l2a-py3.12/lib/python3.12/site-packages/django/core/management/commands/makemigrations.py", line 259, in handle
    self.write_migration_files(changes)
  File "/Users/benomen/Library/Caches/pypoetry/virtualenvs/non-package-mode-bHpb9l2a-py3.12/lib/python3.12/site-packages/django/core/management/commands/makemigrations.py", line 364, in write_migration_files
    migration_string = writer.as_string()
                       ^^^^^^^^^^^^^^^^^^
  File "/Users/benomen/Library/Caches/pypoetry/virtualenvs/non-package-mode-bHpb9l2a-py3.12/lib/python3.12/site-packages/django/db/migrations/writer.py", line 141, in as_string
    operation_string, operation_imports = OperationWriter(operation).serialize()
                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/benomen/Library/Caches/pypoetry/virtualenvs/non-package-mode-bHpb9l2a-py3.12/lib/python3.12/site-packages/django/db/migrations/writer.py", line 99, in serialize
    _write(arg_name, arg_value)
  File "/Users/benomen/Library/Caches/pypoetry/virtualenvs/non-package-mode-bHpb9l2a-py3.12/lib/python3.12/site-packages/django/db/migrations/writer.py", line 51, in _write
    arg_string, arg_imports = MigrationWriter.serialize(item)
                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/benomen/Library/Caches/pypoetry/virtualenvs/non-package-mode-bHpb9l2a-py3.12/lib/python3.12/site-packages/django/db/migrations/writer.py", line 287, in serialize
    return serializer_factory(value).serialize()
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/benomen/Library/Caches/pypoetry/virtualenvs/non-package-mode-bHpb9l2a-py3.12/lib/python3.12/site-packages/django/db/migrations/serializer.py", line 42, in serialize
    item_string, item_imports = serializer_factory(item).serialize()
                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/benomen/Library/Caches/pypoetry/virtualenvs/non-package-mode-bHpb9l2a-py3.12/lib/python3.12/site-packages/django/db/migrations/serializer.py", line 231, in serialize
    return self.serialize_deconstructed(path, args, kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/benomen/Library/Caches/pypoetry/virtualenvs/non-package-mode-bHpb9l2a-py3.12/lib/python3.12/site-packages/django/db/migrations/serializer.py", line 96, in serialize_deconstructed
    arg_string, arg_imports = serializer_factory(arg).serialize()
                              ^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/benomen/Library/Caches/pypoetry/virtualenvs/non-package-mode-bHpb9l2a-py3.12/lib/python3.12/site-packages/django/db/migrations/serializer.py", line 397, in serializer_factory
    raise ValueError(
ValueError: Cannot serialize: <django_selectel_storage.storage.SelectelStorage object at 0x1068af320>
There are some values Django cannot serialize into migration files.