TypeError: Object of type ImageFieldFile is not JSON serializable

[AlexandrKovin]

Describe the bug

class Product(AbstractProduct):

    name = models.CharField(
        max_length=500, verbose_name='Product', unique=True
    )

    default_photo_url = models.ImageField(
        max_length=500,
        storage=S3Boto3Storage(),
        upload_to=product_upload_to_default,
    )

    is_active = models.BooleanField(default=True, null=False)

    history = HistoricalRecords(
        bases=[
            DiffsHistoricalModel,
        ]

    )

A historical model is being created. The default_photo_url field becomes a TextField. And when saving the product model an error occurs

File /lib/python3.11/site-packages/simple_history/models.py", line 662, in post_save
    self.create_historical_record(instance, created and "+" or "~", using=using)
  File lib/python3.11/site-packages/simple_history/models.py", line 780, in create_historical_record
    history_instance.save(using=using)
raise TypeError(f'Object of type {o.__class__.__name__} '
TypeError: Object of type ImageFieldFile is not JSON serializable

[serzot]

Hi , I would like to work on this!

I propose adding two helper functions:

• bulk_create_with_history
• bulk_update_with_history

These will perform Django bulk operations while manually creating historical records and setting change reasons.
I will also write tests and update documentation accordingly.

Please let me know if this sounds good — if yes, I’ll start working on it.