tag:speakerdeck.com,2005:/marcoroth tag:speakerdeck.com,2005:Talk/1543389 2026-05-19T07:21:10-04:00 2026-05-19T07:27:18-04:00 ERB templates in Ruby are traditionally rendered by engines that treat templates as string generators, which makes it difficult to reason about HTML structure, state changes, or incremental updates. These limitations become especially visible in modern HTML-over-the-wire workflows. In this talk, we explore what it would take to build a reactive ERB rendering engine. We begin by revisiting how existing ERB engines compile templates into Ruby code and look at how recent advances in HTML-aware parsing and tooling make new approaches possible. Using Herb::Engine as a concrete example, we examine how structural understanding enables state-aware rendering, diff-based updates, and a more responsive development experience, including instant updates without full page reloads and rich in-browser developer tools. Such as template outlines, partial and ERB structure views, jump-to-source navigation, and many other innovations. https://balkanruby.com/talks/45 Marco Roth (@marcoroth) tag:speakerdeck.com,2005:Talk/1539876 2026-05-11T07:29:11-04:00 2026-05-11T07:34:31-04:00 ERB templates in Ruby are traditionally rendered by engines that treat templates as string generators, which makes it difficult to reason about HTML structure, state changes, or incremental updates. These limitations become especially visible in modern HTML-over-the-wire workflows. In this talk, we explore what it would take to build a reactive ERB rendering engine. We begin by revisiting how existing ERB engines compile templates into Ruby code and look at how recent advances in HTML-aware parsing and tooling make new approaches possible. Using Herb::Engine as a concrete example, we examine how structural understanding enables state-aware rendering, diff-based updates, and a more responsive development experience, including instant updates without full page reloads and rich in-browser developer tools. Such as template outlines, partial and ERB structure views, jump-to-source navigation, and many other innovations. https://rubycon.it/schedule/ Marco Roth (@marcoroth) tag:speakerdeck.com,2005:Talk/1533532 2026-04-24T06:06:58-04:00 2026-04-24T06:14:58-04:00 ERB templates in Ruby are traditionally rendered by engines that treat templates as string generators, which makes it difficult to reason about HTML structure, state changes, or incremental updates. These limitations become especially visible in modern HTML-over-the-wire workflows. In this talk, we explore what it would take to build a reactive ERB rendering engine. We begin by revisiting how existing ERB engines compile templates into Ruby code and look at how recent advances in HTML-aware parsing and tooling make new approaches possible. Using Herb::Engine as a concrete example, we examine how structural understanding enables state-aware rendering, diff-based updates, and a more responsive development experience, including instant updates without full page reloads and rich in-browser developer tools. Such as template outlines, partial and ERB structure views, jump-to-source navigation, and many other innovations. https://rubykaigi.org/2026/presentations/marcoroth.html Marco Roth (@marcoroth) tag:speakerdeck.com,2005:Talk/1528684 2026-04-13T12:46:07-04:00 2026-04-13T12:54:31-04:00 Rails has always been the "batteries included" framework, but the view layer never got the same treatment. HTML+ERB has been loosely defined for 20 years. What happens when you give it a proper grammar? You get a parser, a toolchain, and eventually, reactivity. From a parser written in C, to a linter with 60+ rules, a language server, a rendering engine, and browser dev tools, all powered by the same syntax tree. We'll trace the evolution from Turbolinks to Hotwire, show where the current approach hits a ceiling, and introduce Herb and ReActionView: a path to reactive, server-rendered Rails views without leaving ERB behind. Marco Roth (@marcoroth) tag:speakerdeck.com,2005:Talk/1507168 2026-02-19T11:17:07-05:00 2026-02-19T11:27:24-05:00 This keynote is an overview of how Herb came to be, what Herb can do for you today, and what the future with ReActionView might look like and how Herb could enable it. Marco Roth (@marcoroth) tag:speakerdeck.com,2005:Talk/1468390 2025-11-20T04:18:52-05:00 2025-11-20T04:25:43-05:00 This keynote is an overview of how Herb came to be, what Herb can do for you today, and what the future with ReActionView might look like and how Herb could enable it. Marco Roth (@marcoroth) tag:speakerdeck.com,2005:Talk/1456629 2025-10-25T17:06:17-04:00 2025-10-25T17:14:36-04:00 This talk is the conclusion of a journey I’ve been sharing throughout 2025. At RubyKaigi, I introduced Herb: a new HTML-aware ERB parser and tooling ecosystem. At RailsConf, I released developer tools built on Herb, including a formatter, linter, and language server, alongside a vision for modernizing and improving the Rails view layer. Now, I’ll continue with ReActionView: a new ERB engine built on Herb, fully compatible with `.html.erb` but with HTML validation, better error feedback, reactive updates, and built-in tooling. https://www.xoruby.com/event/austin Marco Roth (@marcoroth) tag:speakerdeck.com,2005:Talk/1452235 2025-10-15T17:02:44-04:00 2025-10-15T17:11:20-04:00 This talk is the conclusion of a journey I’ve been sharing throughout 2025. At RubyKaigi, I introduced Herb: a new HTML-aware ERB parser and tooling ecosystem. At RailsConf, I released developer tools built on Herb, including a formatter, linter, and language server, alongside a vision for modernizing and improving the Rails view layer. Now, I’ll continue with ReActionView: a new ERB engine built on Herb, fully compatible with `.html.erb` but with HTML validation, better error feedback, reactive updates, and built-in tooling. https://www.meetup.com/geneva-rb/events/311083533/ Marco Roth (@marcoroth) tag:speakerdeck.com,2005:Talk/1444032 2025-09-27T03:49:31-04:00 2025-10-15T17:03:31-04:00 This talk is the conclusion of a journey I’ve been sharing throughout 2025. At RubyKaigi, I introduced Herb: a new HTML-aware ERB parser and tooling ecosystem. At RailsConf, I released developer tools built on Herb, including a formatter, linter, and language server, alongside a vision for modernizing and improving the Rails view layer. Now, I’ll continue with ReActionView: a new ERB engine built on Herb, fully compatible with `.html.erb` but with HTML validation, better error feedback, reactive updates, and built-in tooling. https://kaigionrails.org/2025/talks/marcoroth Marco Roth (@marcoroth) tag:speakerdeck.com,2005:Talk/1441588 2025-09-22T09:48:24-04:00 2025-09-22T09:56:17-04:00 This talk is the conclusion of a journey I’ve been sharing throughout 2025. At RubyKaigi, I introduced Herb: a new HTML-aware ERB parser and tooling ecosystem. At RailsConf, I released developer tools built on Herb, including a formatter, linter, and language server, alongside a vision for modernizing and improving the Rails view layer. Now, I’ll continue with ReActionView: a new ERB engine built on Herb, fully compatible with `.html.erb` but with HTML validation, better error feedback, reactive updates, and built-in tooling. https://app.euruko.org/sessions/introducing-reactionview-a-new-actionview-compatible-erb-engine Marco Roth (@marcoroth) tag:speakerdeck.com,2005:Talk/1434333 2025-09-05T10:46:38-04:00 2025-09-05T10:55:58-04:00 This talk is the conclusion of a journey I’ve been sharing throughout 2025. At RubyKaigi, I introduced Herb: a new HTML-aware ERB parser and tooling ecosystem. At RailsConf, I released developer tools built on Herb, including a formatter, linter, and language server, alongside a vision for modernizing and improving the Rails view layer. At Rails World, I’ll debut ReActionView: a new ERB engine built on Herb, fully compatible with .html.erb but with HTML validation, better error feedback, reactive updates, and built-in tooling. This will be the first public release, exclusive to Rails World, tying together everything from the past talks and even bringing exclusive updates to tools I first showed at Rails World 2023. https://rubyonrails.org/world/2025/day-2/marco-roth Marco Roth (@marcoroth) tag:speakerdeck.com,2005:Talk/1412774 2025-07-23T17:20:06-04:00 2025-07-23T17:27:17-04:00 <strong>Abstract</strong> Rails revolutionized web development and continues to evolve, but its view layer has remained largely unchanged while frontend needs have evolved dramatically. Rails has maintained its relevance by adopting technologies like Turbolinks and now Turbo/Hotwire while preserving its core principles. But today's developers face challenges the current view layer wasn't designed to solve: complex UI interactions, reactivity, robust tooling for large codebases, intergration with modern UI kits, and modern tooling expectations. This talk explores how a new HTML-aware ERB parser (Herb) could enable a truly reactive Rails view layer, bringing LiveView-style reactivity while preserving the "HTML-over-the-wire" philosophy. It will integrate with existing LSPs, unlock powerful tooling, and enable reactive server-rendered templates that could be reused client-side. I'll demonstrate what's possible through proof-of-concepts and early prototypes, showing how we can collectively advance Rails views for modern development. <strong>Details</strong> This session shares the vision of "ReActionView - Reactive ActionView" - a modern approach for ActionView built on Herb, designed to meet today's frontend demands while maintaining Rails' principles. <strong>Content</strong> <strong>Today's Challenges</strong>: Why Rails views need better tooling in the HTML-over-the-wire era <strong>The Foundation</strong>: How Herb opens new possibilities by understanding both HTML and ERB simultaneously <strong>Developer Experience</strong>: Seamless integration with Ruby, Rails, Stimulus, and Turbo LSPs <strong>Modern Tooling</strong>: Formatter, linter, and intelligent code completion for the view layer <strong>Reactive Templates</strong>: Server-side templates with LiveView-inspired reactivity without abandoning .html.erb <strong>Universal Templates</strong>: How server templates could potentially work client-side through transpilation <strong>Highlights</strong> <strong>Technical Breakthroughs</strong>: How advanced parsing enables next-generation view tooling <strong>Prototype Demos</strong>: Early demonstrations of the enhanced developer experience <strong>Architecture Options</strong>: Approaches for reactivity while maintaining Rails' server-centric philosophy <strong>Community Roadmap</strong>: Steps needed to bring these ideas to a production-ready HTML rendering engine Event: https://lu.ma/8jcbnfls Marco Roth (@marcoroth) tag:speakerdeck.com,2005:Talk/1400462 2025-07-10T18:19:59-04:00 2025-07-23T17:22:05-04:00 <strong>Abstract</strong> Rails revolutionized web development and continues to evolve, but its view layer has remained largely unchanged while frontend needs have evolved dramatically. Rails has maintained its relevance by adopting technologies like Turbolinks and now Turbo/Hotwire while preserving its core principles. But today's developers face challenges the current view layer wasn't designed to solve: complex UI interactions, reactivity, robust tooling for large codebases, intergration with modern UI kits, and modern tooling expectations. This talk explores how a new HTML-aware ERB parser (Herb) could enable a truly reactive Rails view layer, bringing LiveView-style reactivity while preserving the "HTML-over-the-wire" philosophy. It will integrate with existing LSPs, unlock powerful tooling, and enable reactive server-rendered templates that could be reused client-side. I'll demonstrate what's possible through proof-of-concepts and early prototypes, showing how we can collectively advance Rails views for modern development. <strong>Details</strong> This session shares the vision of "ReActionView - Reactive ActionView" - a modern approach for ActionView built on Herb, designed to meet today's frontend demands while maintaining Rails' principles. <strong>Content</strong> <strong>Today's Challenges</strong>: Why Rails views need better tooling in the HTML-over-the-wire era <strong>The Foundation</strong>: How Herb opens new possibilities by understanding both HTML and ERB simultaneously <strong>Developer Experience</strong>: Seamless integration with Ruby, Rails, Stimulus, and Turbo LSPs <strong>Modern Tooling</strong>: Formatter, linter, and intelligent code completion for the view layer <strong>Reactive Templates</strong>: Server-side templates with LiveView-inspired reactivity without abandoning .html.erb <strong>Universal Templates</strong>: How server templates could potentially work client-side through transpilation <strong>Highlights</strong> <strong>Technical Breakthroughs</strong>: How advanced parsing enables next-generation view tooling <strong>Prototype Demos</strong>: Early demonstrations of the enhanced developer experience <strong>Architecture Options</strong>: Approaches for reactivity while maintaining Rails' server-centric philosophy <strong>Community Roadmap</strong>: Steps needed to bring these ideas to a production-ready HTML rendering engine Marco Roth (@marcoroth) tag:speakerdeck.com,2005:Talk/1385955 2025-06-18T17:25:03-04:00 2025-06-18T17:32:19-04:00 ERB tooling has lagged behind modern web development needs, especially with the rise of Hotwire and HTML-over-the-wire. Discover a new HTML-aware ERB parser that unlocks advanced developer tools like formatters, linters, and LSP integrations, transforming how we build and ship HTML in our Ruby applications. Marco Roth (@marcoroth) tag:speakerdeck.com,2005:Talk/1383492 2025-06-13T17:16:37-04:00 2025-06-13T17:25:25-04:00 RubyEvents.org (formerly RubyVideo.dev) is building a complete index of Ruby conference talks! Learn the technical, organizational, and community-driven strategies used to scale this project, along with the challenges and surprises of managing such a unique resource. Marco Roth (@marcoroth) tag:speakerdeck.com,2005:Talk/1383494 2025-06-13T17:31:10-04:00 2025-06-13T17:43:32-04:00 RubyEvents.org (formerly RubyVideo.dev) is building a complete index of Ruby conference talks! Learn the technical, organizational, and community-driven strategies used to scale this project, along with the challenges and surprises of managing such a unique resource. Marco Roth (@marcoroth) tag:speakerdeck.com,2005:Talk/1373744 2025-05-23T07:32:39-04:00 2025-06-13T17:45:00-04:00 Originally launched as RubyVideo.dev, the project has been rebranded as RubyEvents.org to better reflect its expanded mission. RubyEvents.org aims to index all Ruby events and video talks, making them searchable, accessible, and easier to discover for the Ruby community. https://rubyevents.org Marco Roth (@marcoroth) tag:speakerdeck.com,2005:Talk/1370326 2025-05-16T05:55:52-04:00 2025-05-16T06:03:05-04:00 ERB tooling has lagged behind modern web development needs, especially with the rise of Hotwire and HTML-over-the-wire. Discover a new HTML-aware ERB parser that unlocks advanced developer tools like formatters, linters, and LSP integrations, transforming how we build and ship HTML in our Ruby applications. Marco Roth (@marcoroth) 2026-05-19T07:21:10-04:00