Allow to override child.run_validation call in ListSerializer

[pchiquet]

Description

Move child.run_validation() call to a separated method: ListSerializer.run_child_validation.

This allows to easily customize this behavior without overriding ListSerializer.to_internal_value (which duplicates rest_framework code).

It is useful to support multiple updates where child.instance should be set during run_validation (else a queryset or a list of instances is passed to child serializer).

See

• https://github.com/encode/django-rest-framework/discussions/7805 / https://github.com/encode/django-rest-framework/issues/6130
• https://github.com/encode/django-rest-framework/issues/5345

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[pchiquet]

OK I guess this can be accepted to let 3rd party ext to add custom functionality. but would be great if we can add some tests

I have just added a simple test with a ListSerializer that overrides run_child_validation.

• without this custom implementation, self.instance and self.initial_data are lists during child serializer validation.
• run_child_validation allows to set self.instance to current instance and self.initial_data to current update data.

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[auvipy]

@pchiquet should we consider some documentation update for this?