Explore our practical guides and tutorials on R Shiny: deployment, authentication, development best practices, and expert advice for building professional web applications.https://www.datachamp.fr/en-ushttps://www.datachamp.fr/en/posts/datatable-shiny-row-buttons/https://www.datachamp.fr/en/posts/datatable-shiny-row-buttons/Edit, delete, view details: we all want per-row buttons in our Shiny DataTables. The instinct is to create one actionButton per row, but that doesn't scale. Here's the pattern we use at Data Champ', with Shiny.setInputValue, an anti-duplicate nonce, and a vectorized 15-line utility function.Tue, 16 Jun 2026 09:00:00 GMThttps://www.datachamp.fr/en/posts/shiny-design/https://www.datachamp.fr/en/posts/shiny-design/90% of Shiny apps look like an administrative form. Here are the design principles you need to know, and how to lay the foundations of a real visual identity with bslib and a Bootstrap theme.Mon, 15 Jun 2026 09:00:00 GMThttps://www.datachamp.fr/en/posts/rr26/https://www.datachamp.fr/en/posts/rr26/The companion page for my talk at Rencontres R 2026. Download the slides, and for each of the 6 steps to industrialize a Shiny application, find the resource to dig deeper.Thu, 11 Jun 2026 09:00:00 GMThttps://www.datachamp.fr/en/posts/code-quality/https://www.datachamp.fr/en/posts/code-quality/Chaotic indentation, cryptic variable names, endless copy-pasting: most Shiny codebases we inherit are unreadable. Here's how we clean them up, and more importantly, how we make sure they stay clean: code standards, styler, lintr, and best practices.Wed, 10 Jun 2026 09:00:00 GMThttps://www.datachamp.fr/en/posts/cursor-tokens-audit/https://www.datachamp.fr/en/posts/cursor-tokens-audit/My Cursor bill went from $20 to $580 in three months. To understand why, I dug into how token billing actually works: the categories (input, output, cache), the replay mechanism that multiplies the cost on every tool call, and the invisible baseline Cursor sends before you've typed anything. Here's what I learned, what I changed in my workflow, and how I cut my baseline by 27%.Wed, 20 May 2026 09:00:00 GMThttps://www.datachamp.fr/en/posts/renv/https://www.datachamp.fr/en/posts/renv/Tired of 'it works on my machine' bugs? Discover how renv can make your R projects (and Shiny apps) truly reproducible, everywhere, from your laptop to production.Sat, 02 Aug 2025 09:00:00 GMThttps://www.datachamp.fr/en/posts/deploy-shiny-app-vm/https://www.datachamp.fr/en/posts/deploy-shiny-app-vm/Deploy your Shiny app for just $5/month. Follow this step-by-step guide to set up a secure Hetzner VM, install R & Shiny Server, and serve your dashboard over HTTPS.Mon, 16 Jun 2025 09:00:00 GMThttps://www.datachamp.fr/en/posts/good-development-practices/https://www.datachamp.fr/en/posts/good-development-practices/Learn how to organize your Shiny apps for maintainability and scalability. No more monstrous 40,000-line files. Here's my step-by-step method to keep your code clean and professional.Mon, 05 May 2025 09:00:00 GMThttps://www.datachamp.fr/en/posts/leo/https://www.datachamp.fr/en/posts/leo/From oceanography to Shiny development, discover the true story of Leo, passionate about R, who turns challenges into opportunities at Data Champ.Mon, 31 Mar 2025 09:00:00 GMThttps://www.datachamp.fr/en/posts/auth0/https://www.datachamp.fr/en/posts/auth0/Learn how to implement robust authentication in your Shiny applications using Auth0, ensuring secure access and an enhanced user experience.Mon, 10 Feb 2025 09:00:00 GMThttps://www.datachamp.fr/en/posts/which-version-of-r-to-use-in-prod/https://www.datachamp.fr/en/posts/which-version-of-r-to-use-in-prod/Should I use the most recent version of R? An older one? And when should I update it? Do I even need to? This article will answer all your questions about which version of R to use.Tue, 21 Feb 2023 09:00:00 GMT