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Today is a big day for Herb! It's built into Rails 8.2 by default for all HTML+ERB views. My talk at #RailsWorld in Austin today answered three questions: What is Herb? What ships in Rails 8.2? And what does this enable? Herb v0.11 and ReActionView v0.6 released alongside it.

Marco Roth

@marcoroth.dev

The answer to "what does this enable?" is ReActionView v0.6, which introduces LiveView-like, fine-grained reactivity for Rails.

Marco Roth

@marcoroth.dev

You declare state in your view like strict locals, read it in plain Ruby, and write it from HTML attributes. Updates happen at the slot level, so only the changed values are updated. No JavaScript framework and no new file format needed.

Marco Roth

@marcoroth.dev

I'm really happy with the direction Herb and ReActionView are taking, but I can't do it all by myself. Please try the tools, report issues, and give feedback! reactionview.dev

reactionview.devReActionView - Reactive views for the HTML+ERB you already have | ReActionViewReactive views for the HTML+ERB you already have.

24/9/26, 6:53 pm0 reposts10 likes

Marco Roth

@marcoroth.dev

Posted the slides of my #RailsWorld talk here: speakerdeck.com/marcoroth/he...

speakerdeck.comHerb in Rails 8.2: Your ERB views, now HTML-aware @ Rails World 2026, Austin, TexasWith teams, companies, and open source projects adopting Herb in their daily workflows, the foundation is proving itself at scale and is on track to bec…