Current change is not visible in after_resource_update hook #9557

CKAN version

2.12

Describe the bug

The after_resource_update plugin hook receives an updated resource that is not yet committed, so if it attempts to use resource_show, or if it calls any other APIs that do so, then the result is the old version of the resource.

Steps to reproduce

• Create a plugin that implements IResourceController with an after_resource_update
• Within after_resource_update, call resource_show, passing the ID from the data_dict parameter.
• Result is the pre-update resource.

Expected behavior

Calling resource_show should result in the current version of the resource, which at the point of the after update hook, should be the updated version.

Additional details

ckanext-validation encountered errors because of this. I'm currently rewriting it to pass the full resource dict to an API via the context, which is obviously undesirable.