9.0: Update docs.neos.io content

[skurfuerst]

Update existing (clearly mark which part for which version)

• https://docs.neos.io/tutorials/query-content-repository-in-php

  • new CR API

• https://docs.neos.io/guide/manual/rendering/querying

  • partly

• https://docs.neos.io/guide/manual/content-repository/content-dimensions#configuring-multiple-dimensions

• Privileges in Neos 9 -- IMHO not yet impl. https://docs.neos.io/guide/manual/backend-permissions/list-of-node-privilege-matchers

• new eel helpers (in backend // in Frontend // ...)

• https://docs.neos.io/guide/manual/content-repository/multiple-languages should be re-done

New Docs for 9.0

• PHP API

  • Intro: Multiple CRs
  • Retrieving a Content Repository Instance via the Registry
  • Retrieving a Root Node
  • Traversing the Node Tree
  • Writing the CR with Commands
  • Asynchronous Command Handling & Blocking (already written, can be used as basis) https://docs.neos.io/guide/contributing-to-neos/event-sourced-content-repository/blocking-until-a-command-is-executed
  • (Extensibility - Custom Projections) (Advanced)
  • Extensibility: Extending the Dimension Resolver (Docs: https://github.com/neos/neos-development-collection/blob/9.0/Neos.Neos/Classes/FrontendRouting/EventSourcedFrontendNodeRoutePartHandler.php)

• Guide: Working with multiple CRs

  • Settings for registering a new CR (ContentRepositoryRegistry)
  • How to use the CR for a certain site
  • Extensibility - custom routing - https://github.com/neos/neos-development-collection/blob/9.0/Neos.Neos/Classes/FrontendRouting/EventSourcedFrontendNodeRoutePartHandler.php

• Fusion API

  • new Eel helpers (inBackend, inFrontend, ...)

Migration Guide

• new dimension format in Settings.yaml
• triggering the content migrations
• triggering code migrations (neos/rector)
• new Eel helpers

ValueObject Stuff:

• really good docs: !!! TASK: Remove magic __toString methods from Value Objects #4156