Fastruby iconFastrubySep 29, 2026 ~1 min source read

Rails World ‘26: Herb and ReActionView

I watched Marco Roth's talk at Rails World 2026, and it left me excited about where the Rails view layer is headed. Marco has spent the last couple of years building Herb, an HTML-aware ERB parser that is on its way into Rails 8.2 core, and at Rails World he showed what he is building on top of it: A project called ReActionView.

Rails World ‘26: Herb and ReActionView

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I watched Marco Roth's talk at Rails World 2026, and it left me excited about where the Rails view layer is headed.

Marco has spent the last couple of years building Herb, an HTML-aware ERB parser that is on its way into Rails 8.2 core, and at Rails World he showed what he is building on top of it: A project called...

ReActionView adds real reactivity to your existing.html.erb templates, no Hotwire, no Stimulus, no JavaScript you have to write yourself.

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The useful part

I watched Marco Roth's talk at Rails World 2026, and it left me excited about where the Rails view layer is headed. Marco has spent the last couple of years building Herb, an HTML-aware ERB parser that is on its way into Rails 8.2 core, and at Rails World he showed what he is building on top of it: A project called ReActionView. ReActionView adds real reactivity to your existing.html.erb templates, no Hotwire, no Stimulus, no JavaScript you have to write yourself.

How it works

  • Hotwire already does a lot for us, but it still asks you to write a Stimulus controller once the interaction gets specific, and Marco's demo showed a page that updates itself because the…

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Originally appeared on The Rails Tech Debt Blog.

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