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Yes, this is how Elixir Phoenix works. The caveat is that only returns exactly what needs to be changed, so it's a small diff.

It's not suitable to everything, but it works really well. I'm not advocating switching to it right now, but it's looking very promising.

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htmx glosses over the difficult part, which would be keeping track of the relationship between all these hx-post and hx-target attributes, when they're all just strings in markup. That glossing over is why you don't see any well-established backend libraries on the server integrations page. (https://htmx.org/server-examples/)

Elixir solves this in a much smarter way, because the bindings to reactive values can be validated at compile time, inside the HEEx templates. It's all located together, but you still get the diff passing behavior. (https://hexdocs.pm/phoenix_live_view/assigns-eex.html)

It’s not a difficult part if you already have a powerful web framework. We’re using Htmx with Servant which has type-safe URLs built in. For the targets, automatic name generation is fine.

I prefer the unopinionated, language agnostic simplicity of htmx, just like HTML, over more tightly bound language specific frameworks. It provides a vocabulary that will translate across backend languages and probably endure over competitor frameworks.

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