Per-User Document Content Filtering - Is This Possible?

[artyom-kalman]

Summary

I need to implement per-user content filtering in a collaborative Tiptap editor where different users should see different parts of the same document based on their permissions (block-level access control). I'm wondering if this is architecturally possible with Hocuspocus and if so, what's the recommended approach.

Use Case

Multi-user collaborative document editing with Tiptap
Each document contains blocks with individual permission settings
User A might see blocks 1, 2, 4 while User B only sees blocks 1, 3
Users should be able to collaborate on the blocks they both have access to
Users should not see content they don't have permission to view

Current Understanding

From my research, I understand that:

• onLoadDocument only fires once when a document is loaded into memory, not per user connection
• Subsequent users connecting get the cached document without triggering
• onAuthenticate and onConnect don't have access to the document in their payload

Question

Is per-user document filtering architecturally supported? Can different users connected to the same document receive different initial document states?

Thank you for your time and for building such a great collaborative editing solution! 🙏