Allow entities other than node in book

Very much in need of this.

We ended up creating a 'wrapper' node type, having an entity reference to our non-node content entity, and then all kinds of hackish code to mimic standard book behavior for the non-node content entity...

This extension is being deprecated, see 🌱 [Meta] Tasks to deprecate Book module Active . It will be removed from core and moved to a contrib project, 📌 [11.x] [Meta] Tasks to remove Book Active .

This is now Postponed. The status is set according to two policies. The Remove a core extension and move it to a contributed project → and the Extensions approved for removal → policies.

This issue may be re-opened if it can be considered critical → , If unsure, re-open the issue and ask in a comment.

This reads like a feature request.

May be out of scope for this module pending a major rewrite. But would maybe try https://www.drupal.org/project/entity_hierarchy →

Since there hasn't been a follow up going to close out for now. If still a request please reopen.