Comment by evolve-maz

Htmx has events you can listen to like htmx after response. You can think of it almost like a middleware. After the response comes in, your callback is triggered and you can make the callback look up some attribute given the calling parents attribute that you might call hx-json-key.

Yes you have to add this yourself, but you only need to add one js function once and be done with it.

I've used the callback pattern for custom error handling for all hx responses.