Matt Westcott

Thanks @SebCorbin! I think a registry (based on [`ObjectTypeRegistry`](https://github.com/wagtail/wagtail/blob/main/wagtail/utils/registry.py)) is probably the way to go.

Thanks for the report @maya413! I can confirm I'm seeing the same issue when testing against [bakerydemo](https://github.com/wagtail/bakerydemo): http://localhost:8000/admin/api/main/pages/?child_of=1&for_explorer=1&fields=parent returns results http://localhost:8000/admin/api/main/pages/?child_of=1&for_explorer=1&fields=parent&order=id returns the error `filtering by for_explorer without child_of is...

Now that #10909 is in, we're in a good position to consider what the server-side code for this would look like. Proposed outline: * TBD: decide whether this functionality will...

Can you give more detail about what you're trying to do and why it can't be done with the `before_page_publish` hook, please? It's not really clear what you mean by...

@noobCoderVP Yes, anyone is free to work on any issue, no need to ask.

It's _possible_ that the new version 3.1 of the django-modelcluster library released yesterday fixes this, as it includes a bugfix relating to saving of tag fields - would be good...

@laymonage Looks like this is a documentation issue - https://docs.wagtail.org/en/stable/topics/snippets.html#tagging-snippets specifically says to use `TaggableManager` rather than `ClusterTaggableManager`, presumably because it was written before `DraftStateMixin` was introduced.

@gsakkis If you've only saved the Advert as a draft, then it's expected that the changes won't be reflected in the real `AdvertTag` instances, only in the in-memory versions accessed...

Thanks @laymonage! Updated to use `gettext_noop` and merged in 8aaa579bef.

Closing due to lack of response.