Nested topics possible? ie: my-topic/group1 or my-topic/group2

[ktiedt]

Nested topics possible? ie: my-topic/group1 or my-topic/group2

[wunter8]

This is not supported right now, and there aren't any plans to add it

You could achieve something similar (at least through the API) using tags: https://docs.ntfy.sh/subscribe/api/#filter-messages

As far as I know, neither Android or iOS supports filtering by tags yet, though

[ktiedt]

Thanks @wunter8 i suppose tags would not be useful for access restrictions based on that response as well so sounds like a non-starter for this design. Back to the drawing board for me.

[wunter8]

ntfy has other features for access restrictions (See access control in the docs)

What are you trying to set up? It might not be quite as convenient, but devices could just subscribe to one or more of the topics mytopic, mytopic-group1, and mytopic-group2, and the publishing device can choose which topic is appropriate to publish to, right?

[ktiedt]

@wunter8 something akin to user based subscriptions without having to create a new topic for every event type and maintain access control so only said user or admins could view them. Examples:

Mytopic/user1/on-message

Vs

Mytopic/user2/on-message

Cheesy example but easiest I could think of without going into the weeds

[binwiederhier]

As @wunter8 said, there are no plans for subtopic support. You can achieve user access for "subtopics only accessible for ..." using ACLs and patterns, e.g. `ntfy access user1 'mytopic-group1-*', but that's all. I think it's still limited and won't wor for your entire use case, though.

I'm closing this ticket since it's about nested topics, but feel free to continue talking here or on Discord/Matrix.