Rails Engines

Rails engines An engine is a miniature Rails application that you plug into a host app. It can have its own models, controllers, views, routes, migrations, assets, and tests. In fact, a Rails app is an engine: Rails::Application inherits from Rails::Engine. That’s why everything you know about Rails carries over. ...

October 20, 2026 · 9 min · Markus Greiner

🤖 YARD Documentation in Ruby on Rails

🤖 YARD Documentation in Ruby on Rails YARD is the standard documentation tool for Ruby projects, including Rails apps. Here’s a quick rundown. ...

October 17, 2026 · 2 min · Markus Greiner

✨ Create Microsoft Action Items from Rails

🤖 How can I integrate Rails with Microsoft Graph Note: This was generated by ChatGPT ✨ Great — here’s a clean, production-ready Rails service object pattern for integrating your app with Microsoft Graph (for Outlook / Microsoft To Do / SharePoint). ...

February 12, 2026 · 3 min · Markus Greiner

Render deployment tips

Using private repository If you want to connect a private repository to render, proceed as follows: go to the Render Dashboard, on the top right click on + New and select Web Service you are redirected to a list with a tab Git Provider select Credentials (1) Under Select deployment credentials, pick you github repository Now do Configure in GitHub You are redirected to GitHub. _ Scroll down, until you see Repository Access Pick only select repositories, and pick the one you need. Voilà, you have now connected it to GitHub ...

February 12, 2026 · 3 min · Markus Greiner

🤖 OpenAI and Rails

🤖 Ruby on Rails integrated with OpenAI tool calling Below is a complete small Ruby on Rails example showing how to implement OpenAI tool calling end-to-end. ...

February 12, 2026 · 9 min · Markus Greiner

Rails app with Azure Entra-ID authentication

This post 1 demonstrates how to use Azure Entra-ID for authentication. According to What is Microsoft Entra ID?, Microsoft Entra ID is a cloud-based identity and access management service that your employees can use to access external resources. ...

February 9, 2025 · 4 min · Markus Greiner

Simple.css framework

After using bulma for some time, I moved on to an even easier framework, called Simple.css. All you have to do is to include it: ...

January 1, 2025 · 1 min · Markus Greiner

Ruby on Rails tips and tricks

I have been using Ruby on Rails quite a lot lately due to its extremely rapid way to build proof of concepts for web applications. ...

November 12, 2024 · 11 min · Markus Greiner