Model Diagrams

Creating manual model diagrams (Entity-Relationship Diagrams) for rails applications is a laborious task, especially for more complex or bigger applications. There are fortunately some tools to generate these for you automatically.

These include rails-erd and railroady.

Rails-ERD is easy to use. Simply install Graphviz, add the gem and run the rake erd take task, as explained here.

This post is not finished, more details will be added (about railroady and/or similar tools), and this is expected to be done by 2025 at the latest.