https://www.juanvasquez.dev/JuanVqz's BlogPersonal blog by Juan Vásquez (@JuanVqz) — a software developer sharing lessons learned, technical insights, and reflections on the craft of building software. 2026-06-25T12:35:34-06:00 Juan Vásquez https://www.juanvasquez.dev/ Jekyll © 2026 Juan Vásquez /assets/img/favicons/favicon.ico /assets/img/favicons/favicon-96x96.png From Vite to Propshaft + esbuild: Simplifying a Rails Asset Pipeline2026-05-26T09:00:00-06:00 2026-05-25T09:00:00-06:00 https://www.juanvasquez.dev/blog/from-vite-to-propshaft-esbuild-rails-asset-pipeline/ Juan Vásquez The Problem My Rails app was running Vite. It worked — HMR in development, fingerprinted assets in production, Tailwind through PostCSS. But Vite is a JavaScript tool that happens to serve a Rails app. The vite_rails gem, vite.config.ts, config/vite.json, a separate dev server on port 3036 — all to do what Rails can do natively. I wanted to simplify toward a zero-Node future, where the app is... Building System Admin Impersonation for a Multi-Tenant Rails App2026-05-19T09:00:00-06:00 2026-05-19T09:00:00-06:00 https://www.juanvasquez.dev/blog/system-admin-impersonation-multi-tenant-rails/ Juan Vásquez The Problem I run a clinical assistance system where each hospital gets its own subdomain, one.doctors.com, two.doctors.com, and so on. Each hospital has its own doctors, patients, and data. The subdomains are enforced in routes, and sessions are scoped per hospital. This works great for hospital staff. But as the platform owner, I needed a way to jump into any hospital’s admin panel for supp... Simplifying My AI Dev Setup: What Worked and What I Cut2026-05-12T09:00:00-06:00 2026-05-12T09:00:00-06:00 https://www.juanvasquez.dev/blog/simplifying-my-ai-dev-setup/ Juan Vásquez A few weeks ago I looked at my dotfiles AI configuration and realized I’d over-engineered it. What started as a clean centralization effort had grown into a web of submodules, global MCP servers, and multi-platform symlinks that I barely used. I’m a Rails developer. My primary AI coding tool is Claude Code, with OpenCode as a secondary option. I’d built a system in my dotfiles to manage AI age... From HAML to ERB: Going Back to Rails-Native Templates2026-05-05T09:00:00-06:00 2026-05-05T09:00:00-06:00 https://www.juanvasquez.dev/blog/from-haml-to-erb-going-back-to-rails-native-templates/ Juan Vásquez Why HAML in the First Place When I started building the clinical assistance app, HAML felt like a breath of fresh air. No closing tags. No angle brackets everywhere. Just clean, indentation-based markup: %nav.navbar .navbar-brand = link_to root_path, class: "navbar-item" do %img{ src: logo_path } .navbar-menu .navbar-end = render "shared/user_menu" It was elegant. Yo... From Sprockets to Vite: Evolving a Rails Asset Pipeline2026-04-28T09:00:00-06:00 2026-04-28T09:00:00-06:00 https://www.juanvasquez.dev/blog/from-sprockets-to-vite-rails-asset-pipeline/ Juan Vásquez The Original Setup When I started this Rails app back in 2018, Sprockets was the only game in town. It bundled your JavaScript, compiled your CSS, fingerprinted assets for cache busting — and you never thought about it. The directory structure was classic Rails: app/assets/ ├── config/manifest.js ├── javascripts/ │ ├── application.js │ ├── patients.js │ ├── hospitalizations.js │ └── ...