Django 3.1 JSONField for all supported database backends

See also

• https://docs.djangoproject.com/en/dev/releases/3.1/#jsonfield-for-all-supported-database-backends

Django now includes models.JSONField and forms.JSONField that can be used on all supported database backends.

Both fields support the use of custom JSON encoders and decoders.

The model field supports the introspection, lookups, and transforms that were previously PostgreSQL-only.

If your project uses django.contrib.postgres.fields.JSONField, plus the related form field and transforms, you should adjust to use the new fields, and generate and apply a database migration.

For now, the old fields and transforms are left as a reference to the new ones and are deprecated as of this release.